diff options
Diffstat (limited to 'src/core/lib/support')
53 files changed, 6063 insertions, 0 deletions
diff --git a/src/core/lib/support/alloc.c b/src/core/lib/support/alloc.c new file mode 100644 index 0000000000..020917f79c --- /dev/null +++ b/src/core/lib/support/alloc.c @@ -0,0 +1,90 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/alloc.h> + +#include <grpc/support/log.h> +#include <grpc/support/port_platform.h> +#include <stdlib.h> +#include "src/core/lib/profiling/timers.h" + +static gpr_allocation_functions g_alloc_functions = {malloc, realloc, free}; + +gpr_allocation_functions gpr_get_allocation_functions() { + return g_alloc_functions; +} + +void gpr_set_allocation_functions(gpr_allocation_functions functions) { + GPR_ASSERT(functions.malloc_fn != NULL); + GPR_ASSERT(functions.realloc_fn != NULL); + GPR_ASSERT(functions.free_fn != NULL); + g_alloc_functions = functions; +} + +void *gpr_malloc(size_t size) { + void *p; + GPR_TIMER_BEGIN("gpr_malloc", 0); + p = g_alloc_functions.malloc_fn(size); + if (!p) { + abort(); + } + GPR_TIMER_END("gpr_malloc", 0); + return p; +} + +void gpr_free(void *p) { + GPR_TIMER_BEGIN("gpr_free", 0); + g_alloc_functions.free_fn(p); + GPR_TIMER_END("gpr_free", 0); +} + +void *gpr_realloc(void *p, size_t size) { + GPR_TIMER_BEGIN("gpr_realloc", 0); + p = g_alloc_functions.realloc_fn(p, size); + if (!p) { + abort(); + } + GPR_TIMER_END("gpr_realloc", 0); + return p; +} + +void *gpr_malloc_aligned(size_t size, size_t alignment_log) { + size_t alignment = ((size_t)1) << alignment_log; + size_t extra = alignment - 1 + sizeof(void *); + void *p = gpr_malloc(size + extra); + void **ret = (void **)(((uintptr_t)p + extra) & ~(alignment - 1)); + ret[-1] = p; + return (void *)ret; +} + +void gpr_free_aligned(void *ptr) { gpr_free(((void **)ptr)[-1]); } diff --git a/src/core/lib/support/avl.c b/src/core/lib/support/avl.c new file mode 100644 index 0000000000..8d3ce23e6c --- /dev/null +++ b/src/core/lib/support/avl.c @@ -0,0 +1,288 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/avl.h> + +#include <assert.h> +#include <stdlib.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/string_util.h> +#include <grpc/support/useful.h> + +gpr_avl gpr_avl_create(const gpr_avl_vtable *vtable) { + gpr_avl out; + out.vtable = vtable; + out.root = NULL; + return out; +} + +static gpr_avl_node *ref_node(gpr_avl_node *node) { + if (node) { + gpr_ref(&node->refs); + } + return node; +} + +static void unref_node(const gpr_avl_vtable *vtable, gpr_avl_node *node) { + if (node == NULL) { + return; + } + if (gpr_unref(&node->refs)) { + vtable->destroy_key(node->key); + vtable->destroy_value(node->value); + unref_node(vtable, node->left); + unref_node(vtable, node->right); + gpr_free(node); + } +} + +static long node_height(gpr_avl_node *node) { + return node == NULL ? 0 : node->height; +} + +#ifndef NDEBUG +static long calculate_height(gpr_avl_node *node) { + return node == NULL ? 0 : 1 + GPR_MAX(calculate_height(node->left), + calculate_height(node->right)); +} + +static gpr_avl_node *assert_invariants(gpr_avl_node *n) { + if (n == NULL) return NULL; + assert_invariants(n->left); + assert_invariants(n->right); + assert(calculate_height(n) == n->height); + assert(labs(node_height(n->left) - node_height(n->right)) <= 1); + return n; +} +#else +static gpr_avl_node *assert_invariants(gpr_avl_node *n) { return n; } +#endif + +gpr_avl_node *new_node(void *key, void *value, gpr_avl_node *left, + gpr_avl_node *right) { + gpr_avl_node *node = gpr_malloc(sizeof(*node)); + gpr_ref_init(&node->refs, 1); + node->key = key; + node->value = value; + node->left = assert_invariants(left); + node->right = assert_invariants(right); + node->height = 1 + GPR_MAX(node_height(left), node_height(right)); + return node; +} + +static gpr_avl_node *get(const gpr_avl_vtable *vtable, gpr_avl_node *node, + void *key) { + long cmp; + + if (node == NULL) { + return NULL; + } + + cmp = vtable->compare_keys(node->key, key); + if (cmp == 0) { + return node; + } else if (cmp > 0) { + return get(vtable, node->left, key); + } else { + return get(vtable, node->right, key); + } +} + +void *gpr_avl_get(gpr_avl avl, void *key) { + gpr_avl_node *node = get(avl.vtable, avl.root, key); + return node ? node->value : NULL; +} + +static gpr_avl_node *rotate_left(const gpr_avl_vtable *vtable, void *key, + void *value, gpr_avl_node *left, + gpr_avl_node *right) { + gpr_avl_node *n = + new_node(vtable->copy_key(right->key), vtable->copy_value(right->value), + new_node(key, value, left, ref_node(right->left)), + ref_node(right->right)); + unref_node(vtable, right); + return n; +} + +static gpr_avl_node *rotate_right(const gpr_avl_vtable *vtable, void *key, + void *value, gpr_avl_node *left, + gpr_avl_node *right) { + gpr_avl_node *n = new_node( + vtable->copy_key(left->key), vtable->copy_value(left->value), + ref_node(left->left), new_node(key, value, ref_node(left->right), right)); + unref_node(vtable, left); + return n; +} + +static gpr_avl_node *rotate_left_right(const gpr_avl_vtable *vtable, void *key, + void *value, gpr_avl_node *left, + gpr_avl_node *right) { + /* rotate_right(..., rotate_left(left), right) */ + gpr_avl_node *n = new_node( + vtable->copy_key(left->right->key), + vtable->copy_value(left->right->value), + new_node(vtable->copy_key(left->key), vtable->copy_value(left->value), + ref_node(left->left), ref_node(left->right->left)), + new_node(key, value, ref_node(left->right->right), right)); + unref_node(vtable, left); + return n; +} + +static gpr_avl_node *rotate_right_left(const gpr_avl_vtable *vtable, void *key, + void *value, gpr_avl_node *left, + gpr_avl_node *right) { + /* rotate_left(..., left, rotate_right(right)) */ + gpr_avl_node *n = new_node( + vtable->copy_key(right->left->key), + vtable->copy_value(right->left->value), + new_node(key, value, left, ref_node(right->left->left)), + new_node(vtable->copy_key(right->key), vtable->copy_value(right->value), + ref_node(right->left->right), ref_node(right->right))); + unref_node(vtable, right); + return n; +} + +static gpr_avl_node *rebalance(const gpr_avl_vtable *vtable, void *key, + void *value, gpr_avl_node *left, + gpr_avl_node *right) { + switch (node_height(left) - node_height(right)) { + case 2: + if (node_height(left->left) - node_height(left->right) == -1) { + return assert_invariants( + rotate_left_right(vtable, key, value, left, right)); + } else { + return assert_invariants(rotate_right(vtable, key, value, left, right)); + } + case -2: + if (node_height(right->left) - node_height(right->right) == 1) { + return assert_invariants( + rotate_right_left(vtable, key, value, left, right)); + } else { + return assert_invariants(rotate_left(vtable, key, value, left, right)); + } + default: + return assert_invariants(new_node(key, value, left, right)); + } +} + +static gpr_avl_node *add(const gpr_avl_vtable *vtable, gpr_avl_node *node, + void *key, void *value) { + long cmp; + if (node == NULL) { + return new_node(key, value, NULL, NULL); + } + cmp = vtable->compare_keys(node->key, key); + if (cmp == 0) { + return new_node(key, value, ref_node(node->left), ref_node(node->right)); + } else if (cmp > 0) { + return rebalance( + vtable, vtable->copy_key(node->key), vtable->copy_value(node->value), + add(vtable, node->left, key, value), ref_node(node->right)); + } else { + return rebalance(vtable, vtable->copy_key(node->key), + vtable->copy_value(node->value), ref_node(node->left), + add(vtable, node->right, key, value)); + } +} + +gpr_avl gpr_avl_add(gpr_avl avl, void *key, void *value) { + gpr_avl_node *old_root = avl.root; + avl.root = add(avl.vtable, avl.root, key, value); + assert_invariants(avl.root); + unref_node(avl.vtable, old_root); + return avl; +} + +static gpr_avl_node *in_order_head(gpr_avl_node *node) { + while (node->left != NULL) { + node = node->left; + } + return node; +} + +static gpr_avl_node *in_order_tail(gpr_avl_node *node) { + while (node->right != NULL) { + node = node->right; + } + return node; +} + +static gpr_avl_node *remove(const gpr_avl_vtable *vtable, gpr_avl_node *node, + void *key) { + long cmp; + if (node == NULL) { + return NULL; + } + cmp = vtable->compare_keys(node->key, key); + if (cmp == 0) { + if (node->left == NULL) { + return ref_node(node->right); + } else if (node->right == NULL) { + return ref_node(node->left); + } else if (node->left->height < node->right->height) { + gpr_avl_node *h = in_order_head(node->right); + return rebalance(vtable, vtable->copy_key(h->key), + vtable->copy_value(h->value), ref_node(node->left), + remove(vtable, node->right, h->key)); + } else { + gpr_avl_node *h = in_order_tail(node->left); + return rebalance( + vtable, vtable->copy_key(h->key), vtable->copy_value(h->value), + remove(vtable, node->left, h->key), ref_node(node->right)); + } + } else if (cmp > 0) { + return rebalance(vtable, vtable->copy_key(node->key), + vtable->copy_value(node->value), + remove(vtable, node->left, key), ref_node(node->right)); + } else { + return rebalance(vtable, vtable->copy_key(node->key), + vtable->copy_value(node->value), ref_node(node->left), + remove(vtable, node->right, key)); + } +} + +gpr_avl gpr_avl_remove(gpr_avl avl, void *key) { + gpr_avl_node *old_root = avl.root; + avl.root = remove(avl.vtable, avl.root, key); + assert_invariants(avl.root); + unref_node(avl.vtable, old_root); + return avl; +} + +gpr_avl gpr_avl_ref(gpr_avl avl) { + ref_node(avl.root); + return avl; +} + +void gpr_avl_unref(gpr_avl avl) { unref_node(avl.vtable, avl.root); } diff --git a/src/core/lib/support/backoff.c b/src/core/lib/support/backoff.c new file mode 100644 index 0000000000..e89ef47220 --- /dev/null +++ b/src/core/lib/support/backoff.c @@ -0,0 +1,76 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "src/core/lib/support/backoff.h" + +#include <grpc/support/useful.h> + +void gpr_backoff_init(gpr_backoff *backoff, double multiplier, double jitter, + int64_t min_timeout_millis, int64_t max_timeout_millis) { + backoff->multiplier = multiplier; + backoff->jitter = jitter; + backoff->min_timeout_millis = min_timeout_millis; + backoff->max_timeout_millis = max_timeout_millis; + backoff->rng_state = (uint32_t)gpr_now(GPR_CLOCK_REALTIME).tv_nsec; +} + +gpr_timespec gpr_backoff_begin(gpr_backoff *backoff, gpr_timespec now) { + backoff->current_timeout_millis = backoff->min_timeout_millis; + return gpr_time_add( + now, gpr_time_from_millis(backoff->current_timeout_millis, GPR_TIMESPAN)); +} + +/* Generate a random number between 0 and 1. */ +static double generate_uniform_random_number(uint32_t *rng_state) { + *rng_state = (1103515245 * *rng_state + 12345) % ((uint32_t)1 << 31); + return *rng_state / (double)((uint32_t)1 << 31); +} + +gpr_timespec gpr_backoff_step(gpr_backoff *backoff, gpr_timespec now) { + double new_timeout_millis = + backoff->multiplier * (double)backoff->current_timeout_millis; + double jitter_range = backoff->jitter * new_timeout_millis; + double jitter = + (2 * generate_uniform_random_number(&backoff->rng_state) - 1) * + jitter_range; + backoff->current_timeout_millis = + GPR_CLAMP((int64_t)(new_timeout_millis + jitter), + backoff->min_timeout_millis, backoff->max_timeout_millis); + return gpr_time_add( + now, gpr_time_from_millis(backoff->current_timeout_millis, GPR_TIMESPAN)); +} + +void gpr_backoff_reset(gpr_backoff *backoff) { + // forces step() to return a timeout of min_timeout_millis + backoff->current_timeout_millis = 0; +} diff --git a/src/core/lib/support/backoff.h b/src/core/lib/support/backoff.h new file mode 100644 index 0000000000..6d40c15546 --- /dev/null +++ b/src/core/lib/support/backoff.h @@ -0,0 +1,68 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_BACKOFF_H +#define GRPC_CORE_LIB_SUPPORT_BACKOFF_H + +#include <grpc/support/time.h> + +typedef struct { + /// const: multiplier between retry attempts + double multiplier; + /// const: amount to randomize backoffs + double jitter; + /// const: minimum time between retries in milliseconds + int64_t min_timeout_millis; + /// const: maximum time between retries in milliseconds + int64_t max_timeout_millis; + + /// random number generator + uint32_t rng_state; + + /// current retry timeout in milliseconds + int64_t current_timeout_millis; +} gpr_backoff; + +/// Initialize backoff machinery - does not need to be destroyed +void gpr_backoff_init(gpr_backoff *backoff, double multiplier, double jitter, + int64_t min_timeout_millis, int64_t max_timeout_millis); + +/// Begin retry loop: returns a timespec for the NEXT retry +gpr_timespec gpr_backoff_begin(gpr_backoff *backoff, gpr_timespec now); +/// Step a retry loop: returns a timespec for the NEXT retry +gpr_timespec gpr_backoff_step(gpr_backoff *backoff, gpr_timespec now); +/// Reset the backoff, so the next gpr_backoff_step will be a gpr_backoff_begin +/// instead +void gpr_backoff_reset(gpr_backoff *backoff); + +#endif /* GRPC_CORE_LIB_SUPPORT_BACKOFF_H */ diff --git a/src/core/lib/support/block_annotate.h b/src/core/lib/support/block_annotate.h new file mode 100644 index 0000000000..8fb380241f --- /dev/null +++ b/src/core/lib/support/block_annotate.h @@ -0,0 +1,48 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H +#define GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H + +/* These annotations identify the beginning and end of regions where + the code may block for reasons other than synchronization functions. + These include poll, epoll, and getaddrinfo. */ + +#define GRPC_SCHEDULING_START_BLOCKING_REGION \ + do { \ + } while (0) +#define GRPC_SCHEDULING_END_BLOCKING_REGION \ + do { \ + } while (0) + +#endif /* GRPC_CORE_LIB_SUPPORT_BLOCK_ANNOTATE_H */ diff --git a/src/core/lib/support/cmdline.c b/src/core/lib/support/cmdline.c new file mode 100644 index 0000000000..d47498676d --- /dev/null +++ b/src/core/lib/support/cmdline.c @@ -0,0 +1,347 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/cmdline.h> + +#include <limits.h> +#include <stdio.h> +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> +#include "src/core/lib/support/string.h" + +typedef enum { ARGTYPE_INT, ARGTYPE_BOOL, ARGTYPE_STRING } argtype; + +typedef struct arg { + const char *name; + const char *help; + argtype type; + void *value; + struct arg *next; +} arg; + +struct gpr_cmdline { + const char *description; + arg *args; + const char *argv0; + + const char *extra_arg_name; + const char *extra_arg_help; + void (*extra_arg)(void *user_data, const char *arg); + void *extra_arg_user_data; + + int (*state)(gpr_cmdline *cl, char *arg); + arg *cur_arg; + + int survive_failure; +}; + +static int normal_state(gpr_cmdline *cl, char *arg); + +gpr_cmdline *gpr_cmdline_create(const char *description) { + gpr_cmdline *cl = gpr_malloc(sizeof(gpr_cmdline)); + memset(cl, 0, sizeof(gpr_cmdline)); + + cl->description = description; + cl->state = normal_state; + + return cl; +} + +void gpr_cmdline_set_survive_failure(gpr_cmdline *cl) { + cl->survive_failure = 1; +} + +void gpr_cmdline_destroy(gpr_cmdline *cl) { + while (cl->args) { + arg *a = cl->args; + cl->args = a->next; + gpr_free(a); + } + gpr_free(cl); +} + +static void add_arg(gpr_cmdline *cl, const char *name, const char *help, + argtype type, void *value) { + arg *a; + + for (a = cl->args; a; a = a->next) { + GPR_ASSERT(0 != strcmp(a->name, name)); + } + + a = gpr_malloc(sizeof(arg)); + memset(a, 0, sizeof(arg)); + a->name = name; + a->help = help; + a->type = type; + a->value = value; + a->next = cl->args; + cl->args = a; +} + +void gpr_cmdline_add_int(gpr_cmdline *cl, const char *name, const char *help, + int *value) { + add_arg(cl, name, help, ARGTYPE_INT, value); +} + +void gpr_cmdline_add_flag(gpr_cmdline *cl, const char *name, const char *help, + int *value) { + add_arg(cl, name, help, ARGTYPE_BOOL, value); +} + +void gpr_cmdline_add_string(gpr_cmdline *cl, const char *name, const char *help, + char **value) { + add_arg(cl, name, help, ARGTYPE_STRING, value); +} + +void gpr_cmdline_on_extra_arg( + gpr_cmdline *cl, const char *name, const char *help, + void (*on_extra_arg)(void *user_data, const char *arg), void *user_data) { + GPR_ASSERT(!cl->extra_arg); + GPR_ASSERT(on_extra_arg); + + cl->extra_arg = on_extra_arg; + cl->extra_arg_user_data = user_data; + cl->extra_arg_name = name; + cl->extra_arg_help = help; +} + +/* recursively descend argument list, adding the last element + to s first - so that arguments are added in the order they were + added to the list by api calls */ +static void add_args_to_usage(gpr_strvec *s, arg *a) { + char *tmp; + + if (!a) return; + add_args_to_usage(s, a->next); + + switch (a->type) { + case ARGTYPE_BOOL: + gpr_asprintf(&tmp, " [--%s|--no-%s]", a->name, a->name); + gpr_strvec_add(s, tmp); + break; + case ARGTYPE_STRING: + gpr_asprintf(&tmp, " [--%s=string]", a->name); + gpr_strvec_add(s, tmp); + break; + case ARGTYPE_INT: + gpr_asprintf(&tmp, " [--%s=int]", a->name); + gpr_strvec_add(s, tmp); + break; + } +} + +char *gpr_cmdline_usage_string(gpr_cmdline *cl, const char *argv0) { + /* TODO(ctiller): make this prettier */ + gpr_strvec s; + char *tmp; + const char *name = strrchr(argv0, '/'); + + if (name) { + name++; + } else { + name = argv0; + } + + gpr_strvec_init(&s); + + gpr_asprintf(&tmp, "Usage: %s", name); + gpr_strvec_add(&s, tmp); + add_args_to_usage(&s, cl->args); + if (cl->extra_arg) { + gpr_asprintf(&tmp, " [%s...]", cl->extra_arg_name); + gpr_strvec_add(&s, tmp); + } + gpr_strvec_add(&s, gpr_strdup("\n")); + + tmp = gpr_strvec_flatten(&s, NULL); + gpr_strvec_destroy(&s); + return tmp; +} + +static int print_usage_and_die(gpr_cmdline *cl) { + char *usage = gpr_cmdline_usage_string(cl, cl->argv0); + fprintf(stderr, "%s", usage); + gpr_free(usage); + if (!cl->survive_failure) { + exit(1); + } + return 0; +} + +static int extra_state(gpr_cmdline *cl, char *str) { + if (!cl->extra_arg) { + return print_usage_and_die(cl); + } + cl->extra_arg(cl->extra_arg_user_data, str); + return 1; +} + +static arg *find_arg(gpr_cmdline *cl, char *name) { + arg *a; + + for (a = cl->args; a; a = a->next) { + if (0 == strcmp(a->name, name)) { + break; + } + } + + if (!a) { + fprintf(stderr, "Unknown argument: %s\n", name); + return NULL; + } + + return a; +} + +static int value_state(gpr_cmdline *cl, char *str) { + long intval; + char *end; + + GPR_ASSERT(cl->cur_arg); + + switch (cl->cur_arg->type) { + case ARGTYPE_INT: + intval = strtol(str, &end, 0); + if (*end || intval < INT_MIN || intval > INT_MAX) { + fprintf(stderr, "expected integer, got '%s' for %s\n", str, + cl->cur_arg->name); + return print_usage_and_die(cl); + } + *(int *)cl->cur_arg->value = (int)intval; + break; + case ARGTYPE_BOOL: + if (0 == strcmp(str, "1") || 0 == strcmp(str, "true")) { + *(int *)cl->cur_arg->value = 1; + } else if (0 == strcmp(str, "0") || 0 == strcmp(str, "false")) { + *(int *)cl->cur_arg->value = 0; + } else { + fprintf(stderr, "expected boolean, got '%s' for %s\n", str, + cl->cur_arg->name); + return print_usage_and_die(cl); + } + break; + case ARGTYPE_STRING: + *(char **)cl->cur_arg->value = str; + break; + } + + cl->state = normal_state; + return 1; +} + +static int normal_state(gpr_cmdline *cl, char *str) { + char *eq = NULL; + char *tmp = NULL; + char *arg_name = NULL; + int r = 1; + + if (0 == strcmp(str, "-help") || 0 == strcmp(str, "--help") || + 0 == strcmp(str, "-h")) { + return print_usage_and_die(cl); + } + + cl->cur_arg = NULL; + + if (str[0] == '-') { + if (str[1] == '-') { + if (str[2] == 0) { + /* handle '--' to move to just extra args */ + cl->state = extra_state; + return 1; + } + str += 2; + } else { + str += 1; + } + /* first byte of str is now past the leading '-' or '--' */ + if (str[0] == 'n' && str[1] == 'o' && str[2] == '-') { + /* str is of the form '--no-foo' - it's a flag disable */ + str += 3; + cl->cur_arg = find_arg(cl, str); + if (cl->cur_arg == NULL) { + return print_usage_and_die(cl); + } + if (cl->cur_arg->type != ARGTYPE_BOOL) { + fprintf(stderr, "%s is not a flag argument\n", str); + return print_usage_and_die(cl); + } + *(int *)cl->cur_arg->value = 0; + return 1; /* early out */ + } + eq = strchr(str, '='); + if (eq != NULL) { + /* copy the string into a temp buffer and extract the name */ + tmp = arg_name = gpr_malloc((size_t)(eq - str + 1)); + memcpy(arg_name, str, (size_t)(eq - str)); + arg_name[eq - str] = 0; + } else { + arg_name = str; + } + cl->cur_arg = find_arg(cl, arg_name); + if (cl->cur_arg == NULL) { + return print_usage_and_die(cl); + } + if (eq != NULL) { + /* str was of the type --foo=value, parse the value */ + r = value_state(cl, eq + 1); + } else if (cl->cur_arg->type != ARGTYPE_BOOL) { + /* flag types don't have a '--foo value' variant, other types do */ + cl->state = value_state; + } else { + /* flag parameter: just set the value */ + *(int *)cl->cur_arg->value = 1; + } + } else { + r = extra_state(cl, str); + } + + gpr_free(tmp); + return r; +} + +int gpr_cmdline_parse(gpr_cmdline *cl, int argc, char **argv) { + int i; + + GPR_ASSERT(argc >= 1); + cl->argv0 = argv[0]; + + for (i = 1; i < argc; i++) { + if (!cl->state(cl, argv[i])) { + return 0; + } + } + return 1; +} diff --git a/src/core/lib/support/cpu_iphone.c b/src/core/lib/support/cpu_iphone.c new file mode 100644 index 0000000000..82b49b47bc --- /dev/null +++ b/src/core/lib/support/cpu_iphone.c @@ -0,0 +1,49 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_CPU_IPHONE + +/* Probably 2 instead of 1, but see comment on gpr_cpu_current_cpu. */ +unsigned gpr_cpu_num_cores(void) { return 1; } + +/* Most code that's using this is using it to shard across work queues. So + unless profiling shows it's a problem or there appears a way to detect the + currently running CPU core, let's have it shard the default way. + Note that the interface in cpu.h lets gpr_cpu_num_cores return 0, but doing + it makes it impossible for gpr_cpu_current_cpu to satisfy its stated range, + and some code might be relying on it. */ +unsigned gpr_cpu_current_cpu(void) { return 0; } + +#endif /* GPR_CPU_IPHONE */ diff --git a/src/core/lib/support/cpu_linux.c b/src/core/lib/support/cpu_linux.c new file mode 100644 index 0000000000..d6f7e7d3da --- /dev/null +++ b/src/core/lib/support/cpu_linux.c @@ -0,0 +1,78 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif /* _GNU_SOURCE */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_CPU_LINUX + +#include <errno.h> +#include <sched.h> +#include <string.h> +#include <unistd.h> + +#include <grpc/support/cpu.h> +#include <grpc/support/log.h> +#include <grpc/support/sync.h> + +static int ncpus = 0; + +static void init_num_cpus() { + /* This must be signed. sysconf returns -1 when the number cannot be + determined */ + ncpus = (int)sysconf(_SC_NPROCESSORS_ONLN); + if (ncpus < 1) { + gpr_log(GPR_ERROR, "Cannot determine number of CPUs: assuming 1"); + ncpus = 1; + } +} + +unsigned gpr_cpu_num_cores(void) { + static gpr_once once = GPR_ONCE_INIT; + gpr_once_init(&once, init_num_cpus); + return (unsigned)ncpus; +} + +unsigned gpr_cpu_current_cpu(void) { + int cpu = sched_getcpu(); + if (cpu < 0) { + gpr_log(GPR_ERROR, "Error determining current CPU: %s\n", strerror(errno)); + return 0; + } + return (unsigned)cpu; +} + +#endif /* GPR_CPU_LINUX */ diff --git a/src/core/lib/support/cpu_posix.c b/src/core/lib/support/cpu_posix.c new file mode 100644 index 0000000000..667bde7cad --- /dev/null +++ b/src/core/lib/support/cpu_posix.c @@ -0,0 +1,77 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_CPU_POSIX + +#include <errno.h> +#include <string.h> +#include <unistd.h> + +#include <grpc/support/log.h> +#include <grpc/support/sync.h> + +static __thread char magic_thread_local; + +static long ncpus = 0; + +static void init_ncpus() { + ncpus = sysconf(_SC_NPROCESSORS_ONLN); + if (ncpus < 1 || ncpus > INT32_MAX) { + gpr_log(GPR_ERROR, "Cannot determine number of CPUs: assuming 1"); + ncpus = 1; + } +} + +unsigned gpr_cpu_num_cores(void) { + static gpr_once once = GPR_ONCE_INIT; + gpr_once_init(&once, init_ncpus); + return (unsigned)ncpus; +} + +/* This is a cheap, but good enough, pointer hash for sharding things: */ +static size_t shard_ptr(const void *info) { + size_t x = (size_t)info; + return ((x >> 4) ^ (x >> 9) ^ (x >> 14)) % gpr_cpu_num_cores(); +} + +unsigned gpr_cpu_current_cpu(void) { + /* NOTE: there's no way I know to return the actual cpu index portably... + most code that's using this is using it to shard across work queues though, + so here we use thread identity instead to achieve a similar though not + identical effect */ + return (unsigned)shard_ptr(&magic_thread_local); +} + +#endif /* GPR_CPU_POSIX */ diff --git a/src/core/lib/support/cpu_windows.c b/src/core/lib/support/cpu_windows.c new file mode 100644 index 0000000000..ce32eb0a9d --- /dev/null +++ b/src/core/lib/support/cpu_windows.c @@ -0,0 +1,47 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 +#include <grpc/support/log.h> + +unsigned gpr_cpu_num_cores(void) { + SYSTEM_INFO si; + GetSystemInfo(&si); + return si.dwNumberOfProcessors; +} + +unsigned gpr_cpu_current_cpu(void) { return GetCurrentProcessorNumber(); } + +#endif /* GPR_WIN32 */ diff --git a/src/core/lib/support/env.h b/src/core/lib/support/env.h new file mode 100644 index 0000000000..ec3959bc6e --- /dev/null +++ b/src/core/lib/support/env.h @@ -0,0 +1,60 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_ENV_H +#define GRPC_CORE_LIB_SUPPORT_ENV_H + +#include <stdio.h> + +#include <grpc/support/slice.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* Env utility functions */ + +/* Gets the environment variable value with the specified name. + Returns a newly allocated string. It is the responsability of the caller to + gpr_free the return value if not NULL (which means that the environment + variable exists). */ +char *gpr_getenv(const char *name); + +/* Sets the the environment with the specified name to the specified value. */ +void gpr_setenv(const char *name, const char *value); + +#ifdef __cplusplus +} +#endif + +#endif /* GRPC_CORE_LIB_SUPPORT_ENV_H */ diff --git a/src/core/lib/support/env_linux.c b/src/core/lib/support/env_linux.c new file mode 100644 index 0000000000..2436eb20b0 --- /dev/null +++ b/src/core/lib/support/env_linux.c @@ -0,0 +1,89 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* for secure_getenv. */ +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif + +#include <grpc/support/port_platform.h> + +#ifdef GPR_LINUX_ENV + +#include "src/core/lib/support/env.h" + +#include <dlfcn.h> +#include <features.h> +#include <stdlib.h> +#include <string.h> + +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> +#include <grpc/support/useful.h> + +#include "src/core/lib/support/string.h" + +char *gpr_getenv(const char *name) { +#if defined(GPR_BACKWARDS_COMPATIBILITY_MODE) + typedef char *(*getenv_type)(const char *); + static getenv_type getenv_func = NULL; + /* Check to see which getenv variant is supported (go from most + * to least secure) */ + const char *names[] = {"secure_getenv", "__secure_getenv", "getenv"}; + for (size_t i = 0; getenv_func == NULL && i < GPR_ARRAY_SIZE(names); i++) { + getenv_func = (getenv_type)dlsym(RTLD_DEFAULT, names[i]); + if (getenv_func != NULL && strstr(names[i], "secure") == NULL) { + gpr_log(GPR_DEBUG, + "Warning: insecure environment read function '%s' used", + names[i]); + } + } + char *result = getenv_func(name); + return result == NULL ? result : gpr_strdup(result); +#elif __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 17) + char *result = secure_getenv(name); + return result == NULL ? result : gpr_strdup(result); +#else + gpr_log(GPR_DEBUG, "Warning: insecure environment read function '%s' used", + "getenv"); + char *result = getenv(name); + return result == NULL ? result : gpr_strdup(result); +#endif +} + +void gpr_setenv(const char *name, const char *value) { + int res = setenv(name, value, 1); + GPR_ASSERT(res == 0); +} + +#endif /* GPR_LINUX_ENV */ diff --git a/src/core/lib/support/env_posix.c b/src/core/lib/support/env_posix.c new file mode 100644 index 0000000000..ff47630443 --- /dev/null +++ b/src/core/lib/support/env_posix.c @@ -0,0 +1,57 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_POSIX_ENV + +#include "src/core/lib/support/env.h" + +#include <stdlib.h> + +#include <grpc/support/log.h> + +#include <grpc/support/string_util.h> +#include "src/core/lib/support/string.h" + +char *gpr_getenv(const char *name) { + char *result = getenv(name); + return result == NULL ? result : gpr_strdup(result); +} + +void gpr_setenv(const char *name, const char *value) { + int res = setenv(name, value, 1); + GPR_ASSERT(res == 0); +} + +#endif /* GPR_POSIX_ENV */ diff --git a/src/core/lib/support/env_win32.c b/src/core/lib/support/env_win32.c new file mode 100644 index 0000000000..ef84c941df --- /dev/null +++ b/src/core/lib/support/env_win32.c @@ -0,0 +1,73 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 + +#include "src/core/lib/support/env.h" +#include "src/core/lib/support/string.h" + +#ifdef __MINGW32__ +errno_t getenv_s(size_t *size_needed, char *buffer, size_t size, + const char *varname); +#else +#include <stdlib.h> +#endif + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> + +char *gpr_getenv(const char *name) { + size_t size; + char *result = NULL; + errno_t err; + + err = getenv_s(&size, NULL, 0, name); + if (err || (size == 0)) return NULL; + result = gpr_malloc(size); + err = getenv_s(&size, result, size, name); + if (err) { + gpr_free(result); + return NULL; + } + return result; +} + +void gpr_setenv(const char *name, const char *value) { + errno_t res = _putenv_s(name, value); + GPR_ASSERT(res == 0); +} + +#endif /* GPR_WIN32 */ diff --git a/src/core/lib/support/histogram.c b/src/core/lib/support/histogram.c new file mode 100644 index 0000000000..7b016bbc78 --- /dev/null +++ b/src/core/lib/support/histogram.c @@ -0,0 +1,244 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/histogram.h> + +#include <math.h> +#include <stddef.h> +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/port_platform.h> +#include <grpc/support/useful.h> + +/* Histograms are stored with exponentially increasing bucket sizes. + The first bucket is [0, m) where m = 1 + resolution + Bucket n (n>=1) contains [m**n, m**(n+1)) + There are sufficient buckets to reach max_bucket_start */ + +struct gpr_histogram { + /* Sum of all values seen so far */ + double sum; + /* Sum of squares of all values seen so far */ + double sum_of_squares; + /* number of values seen so far */ + double count; + /* m in the description */ + double multiplier; + double one_on_log_multiplier; + /* minimum value seen */ + double min_seen; + /* maximum value seen */ + double max_seen; + /* maximum representable value */ + double max_possible; + /* number of buckets */ + size_t num_buckets; + /* the buckets themselves */ + uint32_t *buckets; +}; + +/* determine a bucket index given a value - does no bounds checking */ +static size_t bucket_for_unchecked(gpr_histogram *h, double x) { + return (size_t)(log(x) * h->one_on_log_multiplier); +} + +/* bounds checked version of the above */ +static size_t bucket_for(gpr_histogram *h, double x) { + size_t bucket = bucket_for_unchecked(h, GPR_CLAMP(x, 1.0, h->max_possible)); + GPR_ASSERT(bucket < h->num_buckets); + return bucket; +} + +/* at what value does a bucket start? */ +static double bucket_start(gpr_histogram *h, double x) { + return pow(h->multiplier, x); +} + +gpr_histogram *gpr_histogram_create(double resolution, + double max_bucket_start) { + gpr_histogram *h = gpr_malloc(sizeof(gpr_histogram)); + GPR_ASSERT(resolution > 0.0); + GPR_ASSERT(max_bucket_start > resolution); + h->sum = 0.0; + h->sum_of_squares = 0.0; + h->multiplier = 1.0 + resolution; + h->one_on_log_multiplier = 1.0 / log(1.0 + resolution); + h->max_possible = max_bucket_start; + h->count = 0.0; + h->min_seen = max_bucket_start; + h->max_seen = 0.0; + h->num_buckets = bucket_for_unchecked(h, max_bucket_start) + 1; + GPR_ASSERT(h->num_buckets > 1); + GPR_ASSERT(h->num_buckets < 100000000); + h->buckets = gpr_malloc(sizeof(uint32_t) * h->num_buckets); + memset(h->buckets, 0, sizeof(uint32_t) * h->num_buckets); + return h; +} + +void gpr_histogram_destroy(gpr_histogram *h) { + gpr_free(h->buckets); + gpr_free(h); +} + +void gpr_histogram_add(gpr_histogram *h, double x) { + h->sum += x; + h->sum_of_squares += x * x; + h->count++; + if (x < h->min_seen) { + h->min_seen = x; + } + if (x > h->max_seen) { + h->max_seen = x; + } + h->buckets[bucket_for(h, x)]++; +} + +int gpr_histogram_merge(gpr_histogram *dst, const gpr_histogram *src) { + if ((dst->num_buckets != src->num_buckets) || + (dst->multiplier != src->multiplier)) { + /* Fail because these histograms don't match */ + return 0; + } + gpr_histogram_merge_contents(dst, src->buckets, src->num_buckets, + src->min_seen, src->max_seen, src->sum, + src->sum_of_squares, src->count); + return 1; +} + +void gpr_histogram_merge_contents(gpr_histogram *dst, const uint32_t *data, + size_t data_count, double min_seen, + double max_seen, double sum, + double sum_of_squares, double count) { + size_t i; + GPR_ASSERT(dst->num_buckets == data_count); + dst->sum += sum; + dst->sum_of_squares += sum_of_squares; + dst->count += count; + if (min_seen < dst->min_seen) { + dst->min_seen = min_seen; + } + if (max_seen > dst->max_seen) { + dst->max_seen = max_seen; + } + for (i = 0; i < dst->num_buckets; i++) { + dst->buckets[i] += data[i]; + } +} + +static double threshold_for_count_below(gpr_histogram *h, double count_below) { + double count_so_far; + double lower_bound; + double upper_bound; + size_t lower_idx; + size_t upper_idx; + + if (h->count == 0) { + return 0.0; + } + + if (count_below <= 0) { + return h->min_seen; + } + if (count_below >= h->count) { + return h->max_seen; + } + + /* find the lowest bucket that gets us above count_below */ + count_so_far = 0.0; + for (lower_idx = 0; lower_idx < h->num_buckets; lower_idx++) { + count_so_far += h->buckets[lower_idx]; + if (count_so_far >= count_below) { + break; + } + } + if (count_so_far == count_below) { + /* this bucket hits the threshold exactly... we should be midway through + any run of zero values following the bucket */ + for (upper_idx = lower_idx + 1; upper_idx < h->num_buckets; upper_idx++) { + if (h->buckets[upper_idx]) { + break; + } + } + return (bucket_start(h, (double)lower_idx) + + bucket_start(h, (double)upper_idx)) / + 2.0; + } else { + /* treat values as uniform throughout the bucket, and find where this value + should lie */ + lower_bound = bucket_start(h, (double)lower_idx); + upper_bound = bucket_start(h, (double)(lower_idx + 1)); + return GPR_CLAMP(upper_bound - + (upper_bound - lower_bound) * + (count_so_far - count_below) / + h->buckets[lower_idx], + h->min_seen, h->max_seen); + } +} + +double gpr_histogram_percentile(gpr_histogram *h, double percentile) { + return threshold_for_count_below(h, h->count * percentile / 100.0); +} + +double gpr_histogram_mean(gpr_histogram *h) { + GPR_ASSERT(h->count != 0); + return h->sum / h->count; +} + +double gpr_histogram_stddev(gpr_histogram *h) { + return sqrt(gpr_histogram_variance(h)); +} + +double gpr_histogram_variance(gpr_histogram *h) { + if (h->count == 0) return 0.0; + return (h->sum_of_squares * h->count - h->sum * h->sum) / + (h->count * h->count); +} + +double gpr_histogram_maximum(gpr_histogram *h) { return h->max_seen; } + +double gpr_histogram_minimum(gpr_histogram *h) { return h->min_seen; } + +double gpr_histogram_count(gpr_histogram *h) { return h->count; } + +double gpr_histogram_sum(gpr_histogram *h) { return h->sum; } + +double gpr_histogram_sum_of_squares(gpr_histogram *h) { + return h->sum_of_squares; +} + +const uint32_t *gpr_histogram_get_contents(gpr_histogram *h, size_t *size) { + *size = h->num_buckets; + return h->buckets; +} diff --git a/src/core/lib/support/host_port.c b/src/core/lib/support/host_port.c new file mode 100644 index 0000000000..f19bdbc835 --- /dev/null +++ b/src/core/lib/support/host_port.c @@ -0,0 +1,110 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/host_port.h> + +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> +#include "src/core/lib/support/string.h" + +int gpr_join_host_port(char **out, const char *host, int port) { + if (host[0] != '[' && strchr(host, ':') != NULL) { + /* IPv6 literals must be enclosed in brackets. */ + return gpr_asprintf(out, "[%s]:%d", host, port); + } else { + /* Ordinary non-bracketed host:port. */ + return gpr_asprintf(out, "%s:%d", host, port); + } +} + +int gpr_split_host_port(const char *name, char **host, char **port) { + const char *host_start; + size_t host_len; + const char *port_start; + + *host = NULL; + *port = NULL; + + if (name[0] == '[') { + /* Parse a bracketed host, typically an IPv6 literal. */ + const char *rbracket = strchr(name, ']'); + if (rbracket == NULL) { + /* Unmatched [ */ + return 0; + } + if (rbracket[1] == '\0') { + /* ]<end> */ + port_start = NULL; + } else if (rbracket[1] == ':') { + /* ]:<port?> */ + port_start = rbracket + 2; + } else { + /* ]<invalid> */ + return 0; + } + host_start = name + 1; + host_len = (size_t)(rbracket - host_start); + if (memchr(host_start, ':', host_len) == NULL) { + /* Require all bracketed hosts to contain a colon, because a hostname or + IPv4 address should never use brackets. */ + return 0; + } + } else { + const char *colon = strchr(name, ':'); + if (colon != NULL && strchr(colon + 1, ':') == NULL) { + /* Exactly 1 colon. Split into host:port. */ + host_start = name; + host_len = (size_t)(colon - name); + port_start = colon + 1; + } else { + /* 0 or 2+ colons. Bare hostname or IPv6 litearal. */ + host_start = name; + host_len = strlen(name); + port_start = NULL; + } + } + + /* Allocate return values. */ + *host = gpr_malloc(host_len + 1); + memcpy(*host, host_start, host_len); + (*host)[host_len] = '\0'; + + if (port_start != NULL) { + *port = gpr_strdup(port_start); + } + + return 1; +} diff --git a/src/core/lib/support/load_file.c b/src/core/lib/support/load_file.c new file mode 100644 index 0000000000..f30aacdd4f --- /dev/null +++ b/src/core/lib/support/load_file.c @@ -0,0 +1,91 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "src/core/lib/support/load_file.h" + +#include <errno.h> +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> + +#include "src/core/lib/support/block_annotate.h" +#include "src/core/lib/support/string.h" + +gpr_slice gpr_load_file(const char *filename, int add_null_terminator, + int *success) { + unsigned char *contents = NULL; + size_t contents_size = 0; + char *error_msg = NULL; + gpr_slice result = gpr_empty_slice(); + FILE *file; + size_t bytes_read = 0; + + GRPC_SCHEDULING_START_BLOCKING_REGION; + file = fopen(filename, "rb"); + if (file == NULL) { + gpr_asprintf(&error_msg, "Could not open file %s (error = %s).", filename, + strerror(errno)); + GPR_ASSERT(error_msg != NULL); + goto end; + } + fseek(file, 0, SEEK_END); + /* Converting to size_t on the assumption that it will not fail */ + contents_size = (size_t)ftell(file); + fseek(file, 0, SEEK_SET); + contents = gpr_malloc(contents_size + (add_null_terminator ? 1 : 0)); + bytes_read = fread(contents, 1, contents_size, file); + if (bytes_read < contents_size) { + GPR_ASSERT(ferror(file)); + gpr_asprintf(&error_msg, "Error %s occured while reading file %s.", + strerror(errno), filename); + GPR_ASSERT(error_msg != NULL); + goto end; + } + if (success != NULL) *success = 1; + if (add_null_terminator) { + contents[contents_size++] = 0; + } + result = gpr_slice_new(contents, contents_size, gpr_free); + +end: + if (error_msg != NULL) { + gpr_log(GPR_ERROR, "%s", error_msg); + gpr_free(error_msg); + if (success != NULL) *success = 0; + } + if (file != NULL) fclose(file); + GRPC_SCHEDULING_END_BLOCKING_REGION; + return result; +} diff --git a/src/core/lib/support/load_file.h b/src/core/lib/support/load_file.h new file mode 100644 index 0000000000..9a4b27942e --- /dev/null +++ b/src/core/lib/support/load_file.h @@ -0,0 +1,55 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_LOAD_FILE_H +#define GRPC_CORE_LIB_SUPPORT_LOAD_FILE_H + +#include <stdio.h> + +#include <grpc/support/slice.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* Loads the content of a file into a slice. add_null_terminator will add + a NULL terminator if non-zero. The success parameter, if not NULL, + will be set to 1 in case of success and 0 in case of failure. */ +gpr_slice gpr_load_file(const char *filename, int add_null_terminator, + int *success); + +#ifdef __cplusplus +} +#endif + +#endif /* GRPC_CORE_LIB_SUPPORT_LOAD_FILE_H */ diff --git a/src/core/lib/support/log.c b/src/core/lib/support/log.c new file mode 100644 index 0000000000..04156a5b1f --- /dev/null +++ b/src/core/lib/support/log.c @@ -0,0 +1,66 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/log.h> +#include <grpc/support/port_platform.h> + +#include <stdio.h> +#include <string.h> + +extern void gpr_default_log(gpr_log_func_args *args); +static gpr_log_func g_log_func = gpr_default_log; + +const char *gpr_log_severity_string(gpr_log_severity severity) { + switch (severity) { + case GPR_LOG_SEVERITY_DEBUG: + return "D"; + case GPR_LOG_SEVERITY_INFO: + return "I"; + case GPR_LOG_SEVERITY_ERROR: + return "E"; + } + GPR_UNREACHABLE_CODE(return "UNKNOWN"); +} + +void gpr_log_message(const char *file, int line, gpr_log_severity severity, + const char *message) { + gpr_log_func_args lfargs; + memset(&lfargs, 0, sizeof(lfargs)); + lfargs.file = file; + lfargs.line = line; + lfargs.severity = severity; + lfargs.message = message; + g_log_func(&lfargs); +} + +void gpr_set_log_function(gpr_log_func f) { g_log_func = f; } diff --git a/src/core/lib/support/log_android.c b/src/core/lib/support/log_android.c new file mode 100644 index 0000000000..94c8100fd7 --- /dev/null +++ b/src/core/lib/support/log_android.c @@ -0,0 +1,87 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_ANDROID + +#include <android/log.h> +#include <grpc/support/log.h> +#include <grpc/support/time.h> +#include <stdarg.h> +#include <stdio.h> +#include <string.h> + +static android_LogPriority severity_to_log_priority(gpr_log_severity severity) { + switch (severity) { + case GPR_LOG_SEVERITY_DEBUG: + return ANDROID_LOG_DEBUG; + case GPR_LOG_SEVERITY_INFO: + return ANDROID_LOG_INFO; + case GPR_LOG_SEVERITY_ERROR: + return ANDROID_LOG_ERROR; + } + return ANDROID_LOG_DEFAULT; +} + +void gpr_log(const char *file, int line, gpr_log_severity severity, + const char *format, ...) { + char *message = NULL; + va_list args; + va_start(args, format); + vasprintf(&message, format, args); + va_end(args); + gpr_log_message(file, line, severity, message); + free(message); +} + +void gpr_default_log(gpr_log_func_args *args) { + char *final_slash; + const char *display_file; + char *output = NULL; + + final_slash = strrchr(args->file, '/'); + if (final_slash == NULL) + display_file = args->file; + else + display_file = final_slash + 1; + + asprintf(&output, "%s:%d] %s", display_file, args->line, args->message); + + __android_log_write(severity_to_log_priority(args->severity), "GRPC", output); + + /* allocated by asprintf => use free, not gpr_free */ + free(output); +} + +#endif /* GPR_ANDROID */ diff --git a/src/core/lib/support/log_linux.c b/src/core/lib/support/log_linux.c new file mode 100644 index 0000000000..6d4b63bbe0 --- /dev/null +++ b/src/core/lib/support/log_linux.c @@ -0,0 +1,105 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef _POSIX_SOURCE +#define _POSIX_SOURCE +#endif + +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif + +#include <grpc/support/port_platform.h> + +#ifdef GPR_LINUX + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> +#include <grpc/support/time.h> +#include <linux/unistd.h> +#include <stdarg.h> +#include <stdio.h> +#include <string.h> +#include <sys/syscall.h> +#include <time.h> +#include <unistd.h> + +static long gettid(void) { return syscall(__NR_gettid); } + +void gpr_log(const char *file, int line, gpr_log_severity severity, + const char *format, ...) { + char *message = NULL; + va_list args; + va_start(args, format); + if (vasprintf(&message, format, args) == -1) { + va_end(args); + return; + } + va_end(args); + gpr_log_message(file, line, severity, message); + free(message); +} + +void gpr_default_log(gpr_log_func_args *args) { + char *final_slash; + char *prefix; + const char *display_file; + char time_buffer[64]; + time_t timer; + gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME); + struct tm tm; + + timer = (time_t)now.tv_sec; + final_slash = strrchr(args->file, '/'); + if (final_slash == NULL) + display_file = args->file; + else + display_file = final_slash + 1; + + if (!localtime_r(&timer, &tm)) { + strcpy(time_buffer, "error:localtime"); + } else if (0 == + strftime(time_buffer, sizeof(time_buffer), "%m%d %H:%M:%S", &tm)) { + strcpy(time_buffer, "error:strftime"); + } + + gpr_asprintf(&prefix, "%s%s.%09d %7tu %s:%d]", + gpr_log_severity_string(args->severity), time_buffer, + (int)(now.tv_nsec), gettid(), display_file, args->line); + + fprintf(stderr, "%-60s %s\n", prefix, args->message); + gpr_free(prefix); +} + +#endif diff --git a/src/core/lib/support/log_posix.c b/src/core/lib/support/log_posix.c new file mode 100644 index 0000000000..6ae6320767 --- /dev/null +++ b/src/core/lib/support/log_posix.c @@ -0,0 +1,102 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#if defined(GPR_POSIX_LOG) + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/time.h> +#include <pthread.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdio.h> +#include <string.h> +#include <time.h> + +static intptr_t gettid(void) { return (intptr_t)pthread_self(); } + +void gpr_log(const char *file, int line, gpr_log_severity severity, + const char *format, ...) { + char buf[64]; + char *allocated = NULL; + char *message = NULL; + int ret; + va_list args; + va_start(args, format); + ret = vsnprintf(buf, sizeof(buf), format, args); + va_end(args); + if (ret < 0) { + message = NULL; + } else if ((size_t)ret <= sizeof(buf) - 1) { + message = buf; + } else { + message = allocated = gpr_malloc((size_t)ret + 1); + va_start(args, format); + vsnprintf(message, (size_t)(ret + 1), format, args); + va_end(args); + } + gpr_log_message(file, line, severity, message); + gpr_free(allocated); +} + +void gpr_default_log(gpr_log_func_args *args) { + char *final_slash; + const char *display_file; + char time_buffer[64]; + time_t timer; + gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME); + struct tm tm; + + timer = (time_t)now.tv_sec; + final_slash = strrchr(args->file, '/'); + if (final_slash == NULL) + display_file = args->file; + else + display_file = final_slash + 1; + + if (!localtime_r(&timer, &tm)) { + strcpy(time_buffer, "error:localtime"); + } else if (0 == + strftime(time_buffer, sizeof(time_buffer), "%m%d %H:%M:%S", &tm)) { + strcpy(time_buffer, "error:strftime"); + } + + fprintf(stderr, "%s%s.%09d %7tu %s:%d] %s\n", + gpr_log_severity_string(args->severity), time_buffer, + (int)(now.tv_nsec), gettid(), display_file, args->line, + args->message); +} + +#endif /* defined(GPR_POSIX_LOG) */ diff --git a/src/core/lib/support/log_win32.c b/src/core/lib/support/log_win32.c new file mode 100644 index 0000000000..ba78497a0a --- /dev/null +++ b/src/core/lib/support/log_win32.c @@ -0,0 +1,126 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 + +#include <stdarg.h> +#include <stdio.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/log_win32.h> +#include <grpc/support/string_util.h> +#include <grpc/support/time.h> + +#include "src/core/lib/support/string.h" +#include "src/core/lib/support/string_win32.h" + +void gpr_log(const char *file, int line, gpr_log_severity severity, + const char *format, ...) { + char *message = NULL; + va_list args; + int ret; + + /* Determine the length. */ + va_start(args, format); + ret = _vscprintf(format, args); + va_end(args); + if (ret < 0) { + message = NULL; + } else { + /* Allocate a new buffer, with space for the NUL terminator. */ + size_t strp_buflen = (size_t)ret + 1; + message = gpr_malloc(strp_buflen); + + /* Print to the buffer. */ + va_start(args, format); + ret = vsnprintf_s(message, strp_buflen, _TRUNCATE, format, args); + va_end(args); + if ((size_t)ret != strp_buflen - 1) { + /* This should never happen. */ + gpr_free(message); + message = NULL; + } + } + + gpr_log_message(file, line, severity, message); + gpr_free(message); +} + +/* Simple starter implementation */ +void gpr_default_log(gpr_log_func_args *args) { + char *final_slash; + const char *display_file; + char time_buffer[64]; + time_t timer; + gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME); + struct tm tm; + + timer = (time_t)now.tv_sec; + final_slash = strrchr(args->file, '\\'); + if (final_slash == NULL) + display_file = args->file; + else + display_file = final_slash + 1; + + if (localtime_s(&tm, &timer)) { + strcpy(time_buffer, "error:localtime"); + } else if (0 == + strftime(time_buffer, sizeof(time_buffer), "%m%d %H:%M:%S", &tm)) { + strcpy(time_buffer, "error:strftime"); + } + + fprintf(stderr, "%s%s.%09u %5lu %s:%d] %s\n", + gpr_log_severity_string(args->severity), time_buffer, + (int)(now.tv_nsec), GetCurrentThreadId(), display_file, args->line, + args->message); + fflush(stderr); +} + +char *gpr_format_message(int messageid) { + LPTSTR tmessage; + char *message; + DWORD status = FormatMessage( + FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, (DWORD)messageid, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), + (LPTSTR)(&tmessage), 0, NULL); + if (status == 0) return gpr_strdup("Unable to retrieve error string"); + message = gpr_tchar_to_char(tmessage); + LocalFree(tmessage); + return message; +} + +#endif /* GPR_WIN32 */ diff --git a/src/core/lib/support/murmur_hash.c b/src/core/lib/support/murmur_hash.c new file mode 100644 index 0000000000..5711fff0c0 --- /dev/null +++ b/src/core/lib/support/murmur_hash.c @@ -0,0 +1,96 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "src/core/lib/support/murmur_hash.h" + +#define ROTL32(x, r) ((x) << (r)) | ((x) >> (32 - (r))) + +#define FMIX32(h) \ + (h) ^= (h) >> 16; \ + (h) *= 0x85ebca6b; \ + (h) ^= (h) >> 13; \ + (h) *= 0xc2b2ae35; \ + (h) ^= (h) >> 16; + +/* Block read - if your platform needs to do endian-swapping or can only + handle aligned reads, do the conversion here */ +#define GETBLOCK32(p, i) (p)[(i)] + +uint32_t gpr_murmur_hash3(const void *key, size_t len, uint32_t seed) { + const uint8_t *data = (const uint8_t *)key; + const size_t nblocks = len / 4; + int i; + + uint32_t h1 = seed; + uint32_t k1; + + const uint32_t c1 = 0xcc9e2d51; + const uint32_t c2 = 0x1b873593; + + const uint32_t *blocks = ((const uint32_t *)key) + nblocks; + const uint8_t *tail = (const uint8_t *)(data + nblocks * 4); + + /* body */ + for (i = -(int)nblocks; i; i++) { + k1 = GETBLOCK32(blocks, i); + + k1 *= c1; + k1 = ROTL32(k1, 15); + k1 *= c2; + + h1 ^= k1; + h1 = ROTL32(h1, 13); + h1 = h1 * 5 + 0xe6546b64; + } + + k1 = 0; + + /* tail */ + switch (len & 3) { + case 3: + k1 ^= ((uint32_t)tail[2]) << 16; + case 2: + k1 ^= ((uint32_t)tail[1]) << 8; + case 1: + k1 ^= tail[0]; + k1 *= c1; + k1 = ROTL32(k1, 15); + k1 *= c2; + h1 ^= k1; + }; + + /* finalization */ + h1 ^= (uint32_t)len; + FMIX32(h1); + return h1; +} diff --git a/src/core/lib/support/murmur_hash.h b/src/core/lib/support/murmur_hash.h new file mode 100644 index 0000000000..6d282ff358 --- /dev/null +++ b/src/core/lib/support/murmur_hash.h @@ -0,0 +1,44 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H +#define GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H + +#include <grpc/support/port_platform.h> + +#include <stddef.h> + +/* compute the hash of key (length len) */ +uint32_t gpr_murmur_hash3(const void *key, size_t len, uint32_t seed); + +#endif /* GRPC_CORE_LIB_SUPPORT_MURMUR_HASH_H */ diff --git a/src/core/lib/support/slice.c b/src/core/lib/support/slice.c new file mode 100644 index 0000000000..b9a7c77bda --- /dev/null +++ b/src/core/lib/support/slice.c @@ -0,0 +1,343 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/slice.h> + +#include <string.h> + +gpr_slice gpr_empty_slice(void) { + gpr_slice out; + out.refcount = 0; + out.data.inlined.length = 0; + return out; +} + +gpr_slice gpr_slice_ref(gpr_slice slice) { + if (slice.refcount) { + slice.refcount->ref(slice.refcount); + } + return slice; +} + +void gpr_slice_unref(gpr_slice slice) { + if (slice.refcount) { + slice.refcount->unref(slice.refcount); + } +} + +/* gpr_slice_from_static_string support structure - a refcount that does + nothing */ +static void noop_ref_or_unref(void *unused) {} + +static gpr_slice_refcount noop_refcount = {noop_ref_or_unref, + noop_ref_or_unref}; + +gpr_slice gpr_slice_from_static_string(const char *s) { + gpr_slice slice; + slice.refcount = &noop_refcount; + slice.data.refcounted.bytes = (uint8_t *)s; + slice.data.refcounted.length = strlen(s); + return slice; +} + +/* gpr_slice_new support structures - we create a refcount object extended + with the user provided data pointer & destroy function */ +typedef struct new_slice_refcount { + gpr_slice_refcount rc; + gpr_refcount refs; + void (*user_destroy)(void *); + void *user_data; +} new_slice_refcount; + +static void new_slice_ref(void *p) { + new_slice_refcount *r = p; + gpr_ref(&r->refs); +} + +static void new_slice_unref(void *p) { + new_slice_refcount *r = p; + if (gpr_unref(&r->refs)) { + r->user_destroy(r->user_data); + gpr_free(r); + } +} + +gpr_slice gpr_slice_new(void *p, size_t len, void (*destroy)(void *)) { + gpr_slice slice; + new_slice_refcount *rc = gpr_malloc(sizeof(new_slice_refcount)); + gpr_ref_init(&rc->refs, 1); + rc->rc.ref = new_slice_ref; + rc->rc.unref = new_slice_unref; + rc->user_destroy = destroy; + rc->user_data = p; + + slice.refcount = &rc->rc; + slice.data.refcounted.bytes = p; + slice.data.refcounted.length = len; + return slice; +} + +/* gpr_slice_new_with_len support structures - we create a refcount object + extended with the user provided data pointer & destroy function */ +typedef struct new_with_len_slice_refcount { + gpr_slice_refcount rc; + gpr_refcount refs; + void *user_data; + size_t user_length; + void (*user_destroy)(void *, size_t); +} new_with_len_slice_refcount; + +static void new_with_len_ref(void *p) { + new_with_len_slice_refcount *r = p; + gpr_ref(&r->refs); +} + +static void new_with_len_unref(void *p) { + new_with_len_slice_refcount *r = p; + if (gpr_unref(&r->refs)) { + r->user_destroy(r->user_data, r->user_length); + gpr_free(r); + } +} + +gpr_slice gpr_slice_new_with_len(void *p, size_t len, + void (*destroy)(void *, size_t)) { + gpr_slice slice; + new_with_len_slice_refcount *rc = + gpr_malloc(sizeof(new_with_len_slice_refcount)); + gpr_ref_init(&rc->refs, 1); + rc->rc.ref = new_with_len_ref; + rc->rc.unref = new_with_len_unref; + rc->user_destroy = destroy; + rc->user_data = p; + rc->user_length = len; + + slice.refcount = &rc->rc; + slice.data.refcounted.bytes = p; + slice.data.refcounted.length = len; + return slice; +} + +gpr_slice gpr_slice_from_copied_buffer(const char *source, size_t length) { + gpr_slice slice = gpr_slice_malloc(length); + memcpy(GPR_SLICE_START_PTR(slice), source, length); + return slice; +} + +gpr_slice gpr_slice_from_copied_string(const char *source) { + return gpr_slice_from_copied_buffer(source, strlen(source)); +} + +typedef struct { + gpr_slice_refcount base; + gpr_refcount refs; +} malloc_refcount; + +static void malloc_ref(void *p) { + malloc_refcount *r = p; + gpr_ref(&r->refs); +} + +static void malloc_unref(void *p) { + malloc_refcount *r = p; + if (gpr_unref(&r->refs)) { + gpr_free(r); + } +} + +gpr_slice gpr_slice_malloc(size_t length) { + gpr_slice slice; + + if (length > sizeof(slice.data.inlined.bytes)) { + /* Memory layout used by the slice created here: + + +-----------+----------------------------------------------------------+ + | refcount | bytes | + +-----------+----------------------------------------------------------+ + + refcount is a malloc_refcount + bytes is an array of bytes of the requested length + Both parts are placed in the same allocation returned from gpr_malloc */ + malloc_refcount *rc = gpr_malloc(sizeof(malloc_refcount) + length); + + /* Initial refcount on rc is 1 - and it's up to the caller to release + this reference. */ + gpr_ref_init(&rc->refs, 1); + + rc->base.ref = malloc_ref; + rc->base.unref = malloc_unref; + + /* Build up the slice to be returned. */ + /* The slices refcount points back to the allocated block. */ + slice.refcount = &rc->base; + /* The data bytes are placed immediately after the refcount struct */ + slice.data.refcounted.bytes = (uint8_t *)(rc + 1); + /* And the length of the block is set to the requested length */ + slice.data.refcounted.length = length; + } else { + /* small slice: just inline the data */ + slice.refcount = NULL; + slice.data.inlined.length = (uint8_t)length; + } + return slice; +} + +gpr_slice gpr_slice_sub_no_ref(gpr_slice source, size_t begin, size_t end) { + gpr_slice subset; + + GPR_ASSERT(end >= begin); + + if (source.refcount) { + /* Enforce preconditions */ + GPR_ASSERT(source.data.refcounted.length >= end); + + /* Build the result */ + subset.refcount = source.refcount; + /* Point into the source array */ + subset.data.refcounted.bytes = source.data.refcounted.bytes + begin; + subset.data.refcounted.length = end - begin; + } else { + /* Enforce preconditions */ + GPR_ASSERT(source.data.inlined.length >= end); + subset.refcount = NULL; + subset.data.inlined.length = (uint8_t)(end - begin); + memcpy(subset.data.inlined.bytes, source.data.inlined.bytes + begin, + end - begin); + } + return subset; +} + +gpr_slice gpr_slice_sub(gpr_slice source, size_t begin, size_t end) { + gpr_slice subset; + + if (end - begin <= sizeof(subset.data.inlined.bytes)) { + subset.refcount = NULL; + subset.data.inlined.length = (uint8_t)(end - begin); + memcpy(subset.data.inlined.bytes, GPR_SLICE_START_PTR(source) + begin, + end - begin); + } else { + subset = gpr_slice_sub_no_ref(source, begin, end); + /* Bump the refcount */ + subset.refcount->ref(subset.refcount); + } + return subset; +} + +gpr_slice gpr_slice_split_tail(gpr_slice *source, size_t split) { + gpr_slice tail; + + if (source->refcount == NULL) { + /* inlined data, copy it out */ + GPR_ASSERT(source->data.inlined.length >= split); + tail.refcount = NULL; + tail.data.inlined.length = (uint8_t)(source->data.inlined.length - split); + memcpy(tail.data.inlined.bytes, source->data.inlined.bytes + split, + tail.data.inlined.length); + source->data.inlined.length = (uint8_t)split; + } else { + size_t tail_length = source->data.refcounted.length - split; + GPR_ASSERT(source->data.refcounted.length >= split); + if (tail_length < sizeof(tail.data.inlined.bytes)) { + /* Copy out the bytes - it'll be cheaper than refcounting */ + tail.refcount = NULL; + tail.data.inlined.length = (uint8_t)tail_length; + memcpy(tail.data.inlined.bytes, source->data.refcounted.bytes + split, + tail_length); + } else { + /* Build the result */ + tail.refcount = source->refcount; + /* Bump the refcount */ + tail.refcount->ref(tail.refcount); + /* Point into the source array */ + tail.data.refcounted.bytes = source->data.refcounted.bytes + split; + tail.data.refcounted.length = tail_length; + } + source->data.refcounted.length = split; + } + + return tail; +} + +gpr_slice gpr_slice_split_head(gpr_slice *source, size_t split) { + gpr_slice head; + + if (source->refcount == NULL) { + GPR_ASSERT(source->data.inlined.length >= split); + + head.refcount = NULL; + head.data.inlined.length = (uint8_t)split; + memcpy(head.data.inlined.bytes, source->data.inlined.bytes, split); + source->data.inlined.length = + (uint8_t)(source->data.inlined.length - split); + memmove(source->data.inlined.bytes, source->data.inlined.bytes + split, + source->data.inlined.length); + } else if (split < sizeof(head.data.inlined.bytes)) { + GPR_ASSERT(source->data.refcounted.length >= split); + + head.refcount = NULL; + head.data.inlined.length = (uint8_t)split; + memcpy(head.data.inlined.bytes, source->data.refcounted.bytes, split); + source->data.refcounted.bytes += split; + source->data.refcounted.length -= split; + } else { + GPR_ASSERT(source->data.refcounted.length >= split); + + /* Build the result */ + head.refcount = source->refcount; + /* Bump the refcount */ + head.refcount->ref(head.refcount); + /* Point into the source array */ + head.data.refcounted.bytes = source->data.refcounted.bytes; + head.data.refcounted.length = split; + source->data.refcounted.bytes += split; + source->data.refcounted.length -= split; + } + + return head; +} + +int gpr_slice_cmp(gpr_slice a, gpr_slice b) { + int d = (int)(GPR_SLICE_LENGTH(a) - GPR_SLICE_LENGTH(b)); + if (d != 0) return d; + return memcmp(GPR_SLICE_START_PTR(a), GPR_SLICE_START_PTR(b), + GPR_SLICE_LENGTH(a)); +} + +int gpr_slice_str_cmp(gpr_slice a, const char *b) { + size_t b_length = strlen(b); + int d = (int)(GPR_SLICE_LENGTH(a) - b_length); + if (d != 0) return d; + return memcmp(GPR_SLICE_START_PTR(a), b, b_length); +} diff --git a/src/core/lib/support/slice_buffer.c b/src/core/lib/support/slice_buffer.c new file mode 100644 index 0000000000..66f111d767 --- /dev/null +++ b/src/core/lib/support/slice_buffer.c @@ -0,0 +1,282 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> +#include <grpc/support/slice_buffer.h> + +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/useful.h> + +/* grow a buffer; requires GRPC_SLICE_BUFFER_INLINE_ELEMENTS > 1 */ +#define GROW(x) (3 * (x) / 2) + +static void maybe_embiggen(gpr_slice_buffer *sb) { + if (sb->count == sb->capacity) { + sb->capacity = GROW(sb->capacity); + GPR_ASSERT(sb->capacity > sb->count); + if (sb->slices == sb->inlined) { + sb->slices = gpr_malloc(sb->capacity * sizeof(gpr_slice)); + memcpy(sb->slices, sb->inlined, sb->count * sizeof(gpr_slice)); + } else { + sb->slices = gpr_realloc(sb->slices, sb->capacity * sizeof(gpr_slice)); + } + } +} + +void gpr_slice_buffer_init(gpr_slice_buffer *sb) { + sb->count = 0; + sb->length = 0; + sb->capacity = GRPC_SLICE_BUFFER_INLINE_ELEMENTS; + sb->slices = sb->inlined; +} + +void gpr_slice_buffer_destroy(gpr_slice_buffer *sb) { + gpr_slice_buffer_reset_and_unref(sb); + if (sb->slices != sb->inlined) { + gpr_free(sb->slices); + } +} + +uint8_t *gpr_slice_buffer_tiny_add(gpr_slice_buffer *sb, size_t n) { + gpr_slice *back; + uint8_t *out; + + sb->length += n; + + if (sb->count == 0) goto add_new; + back = &sb->slices[sb->count - 1]; + if (back->refcount) goto add_new; + if ((back->data.inlined.length + n) > sizeof(back->data.inlined.bytes)) + goto add_new; + out = back->data.inlined.bytes + back->data.inlined.length; + back->data.inlined.length = (uint8_t)(back->data.inlined.length + n); + return out; + +add_new: + maybe_embiggen(sb); + back = &sb->slices[sb->count]; + sb->count++; + back->refcount = NULL; + back->data.inlined.length = (uint8_t)n; + return back->data.inlined.bytes; +} + +size_t gpr_slice_buffer_add_indexed(gpr_slice_buffer *sb, gpr_slice s) { + size_t out = sb->count; + maybe_embiggen(sb); + sb->slices[out] = s; + sb->length += GPR_SLICE_LENGTH(s); + sb->count = out + 1; + return out; +} + +void gpr_slice_buffer_add(gpr_slice_buffer *sb, gpr_slice s) { + size_t n = sb->count; + /* if both the last slice in the slice buffer and the slice being added + are inlined (that is, that they carry their data inside the slice data + structure), and the back slice is not full, then concatenate directly + into the back slice, preventing many small slices being passed into + writes */ + if (!s.refcount && n) { + gpr_slice *back = &sb->slices[n - 1]; + if (!back->refcount && back->data.inlined.length < GPR_SLICE_INLINED_SIZE) { + if (s.data.inlined.length + back->data.inlined.length <= + GPR_SLICE_INLINED_SIZE) { + memcpy(back->data.inlined.bytes + back->data.inlined.length, + s.data.inlined.bytes, s.data.inlined.length); + back->data.inlined.length = + (uint8_t)(back->data.inlined.length + s.data.inlined.length); + } else { + size_t cp1 = GPR_SLICE_INLINED_SIZE - back->data.inlined.length; + memcpy(back->data.inlined.bytes + back->data.inlined.length, + s.data.inlined.bytes, cp1); + back->data.inlined.length = GPR_SLICE_INLINED_SIZE; + maybe_embiggen(sb); + back = &sb->slices[n]; + sb->count = n + 1; + back->refcount = NULL; + back->data.inlined.length = (uint8_t)(s.data.inlined.length - cp1); + memcpy(back->data.inlined.bytes, s.data.inlined.bytes + cp1, + s.data.inlined.length - cp1); + } + sb->length += s.data.inlined.length; + return; /* early out */ + } + } + gpr_slice_buffer_add_indexed(sb, s); +} + +void gpr_slice_buffer_addn(gpr_slice_buffer *sb, gpr_slice *s, size_t n) { + size_t i; + for (i = 0; i < n; i++) { + gpr_slice_buffer_add(sb, s[i]); + } +} + +void gpr_slice_buffer_pop(gpr_slice_buffer *sb) { + if (sb->count != 0) { + size_t count = --sb->count; + sb->length -= GPR_SLICE_LENGTH(sb->slices[count]); + } +} + +void gpr_slice_buffer_reset_and_unref(gpr_slice_buffer *sb) { + size_t i; + + for (i = 0; i < sb->count; i++) { + gpr_slice_unref(sb->slices[i]); + } + + sb->count = 0; + sb->length = 0; +} + +void gpr_slice_buffer_swap(gpr_slice_buffer *a, gpr_slice_buffer *b) { + GPR_SWAP(size_t, a->count, b->count); + GPR_SWAP(size_t, a->capacity, b->capacity); + GPR_SWAP(size_t, a->length, b->length); + + if (a->slices == a->inlined) { + if (b->slices == b->inlined) { + /* swap contents of inlined buffer */ + gpr_slice temp[GRPC_SLICE_BUFFER_INLINE_ELEMENTS]; + memcpy(temp, a->slices, b->count * sizeof(gpr_slice)); + memcpy(a->slices, b->slices, a->count * sizeof(gpr_slice)); + memcpy(b->slices, temp, b->count * sizeof(gpr_slice)); + } else { + /* a is inlined, b is not - copy a inlined into b, fix pointers */ + a->slices = b->slices; + b->slices = b->inlined; + memcpy(b->slices, a->inlined, b->count * sizeof(gpr_slice)); + } + } else if (b->slices == b->inlined) { + /* b is inlined, a is not - copy b inlined int a, fix pointers */ + b->slices = a->slices; + a->slices = a->inlined; + memcpy(a->slices, b->inlined, a->count * sizeof(gpr_slice)); + } else { + /* no inlining: easy swap */ + GPR_SWAP(gpr_slice *, a->slices, b->slices); + } +} + +void gpr_slice_buffer_move_into(gpr_slice_buffer *src, gpr_slice_buffer *dst) { + /* anything to move? */ + if (src->count == 0) { + return; + } + /* anything in dst? */ + if (dst->count == 0) { + gpr_slice_buffer_swap(src, dst); + return; + } + /* both buffers have data - copy, and reset src */ + gpr_slice_buffer_addn(dst, src->slices, src->count); + src->count = 0; + src->length = 0; +} + +void gpr_slice_buffer_move_first(gpr_slice_buffer *src, size_t n, + gpr_slice_buffer *dst) { + size_t src_idx; + size_t output_len = dst->length + n; + size_t new_input_len = src->length - n; + GPR_ASSERT(src->length >= n); + if (src->length == n) { + gpr_slice_buffer_move_into(src, dst); + return; + } + src_idx = 0; + while (src_idx < src->capacity) { + gpr_slice slice = src->slices[src_idx]; + size_t slice_len = GPR_SLICE_LENGTH(slice); + if (n > slice_len) { + gpr_slice_buffer_add(dst, slice); + n -= slice_len; + src_idx++; + } else if (n == slice_len) { + gpr_slice_buffer_add(dst, slice); + src_idx++; + break; + } else { /* n < slice_len */ + src->slices[src_idx] = gpr_slice_split_tail(&slice, n); + GPR_ASSERT(GPR_SLICE_LENGTH(slice) == n); + GPR_ASSERT(GPR_SLICE_LENGTH(src->slices[src_idx]) == slice_len - n); + gpr_slice_buffer_add(dst, slice); + break; + } + } + GPR_ASSERT(dst->length == output_len); + memmove(src->slices, src->slices + src_idx, + sizeof(gpr_slice) * (src->count - src_idx)); + src->count -= src_idx; + src->length = new_input_len; + GPR_ASSERT(src->count > 0); +} + +void gpr_slice_buffer_trim_end(gpr_slice_buffer *sb, size_t n, + gpr_slice_buffer *garbage) { + GPR_ASSERT(n <= sb->length); + sb->length -= n; + for (;;) { + size_t idx = sb->count - 1; + gpr_slice slice = sb->slices[idx]; + size_t slice_len = GPR_SLICE_LENGTH(slice); + if (slice_len > n) { + sb->slices[idx] = gpr_slice_split_head(&slice, slice_len - n); + gpr_slice_buffer_add_indexed(garbage, slice); + return; + } else if (slice_len == n) { + gpr_slice_buffer_add_indexed(garbage, slice); + sb->count = idx; + return; + } else { + gpr_slice_buffer_add_indexed(garbage, slice); + n -= slice_len; + sb->count = idx; + } + } +} + +gpr_slice gpr_slice_buffer_take_first(gpr_slice_buffer *sb) { + gpr_slice slice; + GPR_ASSERT(sb->count > 0); + slice = sb->slices[0]; + memmove(&sb->slices[0], &sb->slices[1], (sb->count - 1) * sizeof(gpr_slice)); + sb->count--; + sb->length -= GPR_SLICE_LENGTH(slice); + return slice; +} diff --git a/src/core/lib/support/stack_lockfree.c b/src/core/lib/support/stack_lockfree.c new file mode 100644 index 0000000000..9d7c9e5a38 --- /dev/null +++ b/src/core/lib/support/stack_lockfree.c @@ -0,0 +1,185 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "src/core/lib/support/stack_lockfree.h" + +#include <stdlib.h> +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/atm.h> +#include <grpc/support/log.h> +#include <grpc/support/port_platform.h> + +/* The lockfree node structure is a single architecture-level + word that allows for an atomic CAS to set it up. */ +struct lockfree_node_contents { + /* next thing to look at. Actual index for head, next index otherwise */ + uint16_t index; +#ifdef GPR_ARCH_64 + uint16_t pad; + uint32_t aba_ctr; +#else +#ifdef GPR_ARCH_32 + uint16_t aba_ctr; +#else +#error Unsupported bit width architecture +#endif +#endif +}; + +/* Use a union to make sure that these are in the same bits as an atm word */ +typedef union lockfree_node { + gpr_atm atm; + struct lockfree_node_contents contents; +} lockfree_node; + +/* make sure that entries aligned to 8-bytes */ +#define ENTRY_ALIGNMENT_BITS 3 +/* reserve this entry as invalid */ +#define INVALID_ENTRY_INDEX ((1 << 16) - 1) + +struct gpr_stack_lockfree { + lockfree_node *entries; + lockfree_node head; /* An atomic entry describing curr head */ + +#ifndef NDEBUG + /* Bitmap of pushed entries to check for double-push or pop */ + gpr_atm pushed[(INVALID_ENTRY_INDEX + 1) / (8 * sizeof(gpr_atm))]; +#endif +}; + +gpr_stack_lockfree *gpr_stack_lockfree_create(size_t entries) { + gpr_stack_lockfree *stack; + stack = gpr_malloc(sizeof(*stack)); + /* Since we only allocate 16 bits to represent an entry number, + * make sure that we are within the desired range */ + /* Reserve the highest entry number as a dummy */ + GPR_ASSERT(entries < INVALID_ENTRY_INDEX); + stack->entries = gpr_malloc_aligned(entries * sizeof(stack->entries[0]), + ENTRY_ALIGNMENT_BITS); + /* Clear out all entries */ + memset(stack->entries, 0, entries * sizeof(stack->entries[0])); + memset(&stack->head, 0, sizeof(stack->head)); +#ifndef NDEBUG + memset(&stack->pushed, 0, sizeof(stack->pushed)); +#endif + + GPR_ASSERT(sizeof(stack->entries->atm) == sizeof(stack->entries->contents)); + + /* Point the head at reserved dummy entry */ + stack->head.contents.index = INVALID_ENTRY_INDEX; +/* Fill in the pad and aba_ctr to avoid confusing memcheck tools */ +#ifdef GPR_ARCH_64 + stack->head.contents.pad = 0; +#endif + stack->head.contents.aba_ctr = 0; + return stack; +} + +void gpr_stack_lockfree_destroy(gpr_stack_lockfree *stack) { + gpr_free_aligned(stack->entries); + gpr_free(stack); +} + +int gpr_stack_lockfree_push(gpr_stack_lockfree *stack, int entry) { + lockfree_node head; + lockfree_node newhead; + lockfree_node curent; + lockfree_node newent; + + /* First fill in the entry's index and aba ctr for new head */ + newhead.contents.index = (uint16_t)entry; +#ifdef GPR_ARCH_64 + /* Fill in the pad to avoid confusing memcheck tools */ + newhead.contents.pad = 0; +#endif + + /* Also post-increment the aba_ctr */ + curent.atm = gpr_atm_no_barrier_load(&stack->entries[entry].atm); + newhead.contents.aba_ctr = ++curent.contents.aba_ctr; + gpr_atm_no_barrier_store(&stack->entries[entry].atm, curent.atm); + +#ifndef NDEBUG + /* Check for double push */ + { + int pushed_index = entry / (int)(8 * sizeof(gpr_atm)); + int pushed_bit = entry % (int)(8 * sizeof(gpr_atm)); + gpr_atm old_val; + + old_val = gpr_atm_no_barrier_fetch_add(&stack->pushed[pushed_index], + ((gpr_atm)1 << pushed_bit)); + GPR_ASSERT((old_val & (((gpr_atm)1) << pushed_bit)) == 0); + } +#endif + + do { + /* Atomically get the existing head value for use */ + head.atm = gpr_atm_no_barrier_load(&(stack->head.atm)); + /* Point to it */ + newent.atm = gpr_atm_no_barrier_load(&stack->entries[entry].atm); + newent.contents.index = head.contents.index; + gpr_atm_no_barrier_store(&stack->entries[entry].atm, newent.atm); + } while (!gpr_atm_rel_cas(&(stack->head.atm), head.atm, newhead.atm)); + /* Use rel_cas above to make sure that entry index is set properly */ + return head.contents.index == INVALID_ENTRY_INDEX; +} + +int gpr_stack_lockfree_pop(gpr_stack_lockfree *stack) { + lockfree_node head; + lockfree_node newhead; + + do { + head.atm = gpr_atm_acq_load(&(stack->head.atm)); + if (head.contents.index == INVALID_ENTRY_INDEX) { + return -1; + } + newhead.atm = + gpr_atm_no_barrier_load(&(stack->entries[head.contents.index].atm)); + + } while (!gpr_atm_no_barrier_cas(&(stack->head.atm), head.atm, newhead.atm)); +#ifndef NDEBUG + /* Check for valid pop */ + { + int pushed_index = head.contents.index / (8 * sizeof(gpr_atm)); + int pushed_bit = head.contents.index % (8 * sizeof(gpr_atm)); + gpr_atm old_val; + + old_val = gpr_atm_no_barrier_fetch_add(&stack->pushed[pushed_index], + -((gpr_atm)1 << pushed_bit)); + GPR_ASSERT((old_val & (((gpr_atm)1) << pushed_bit)) != 0); + } +#endif + + return head.contents.index; +} diff --git a/src/core/lib/support/stack_lockfree.h b/src/core/lib/support/stack_lockfree.h new file mode 100644 index 0000000000..35ef7c2959 --- /dev/null +++ b/src/core/lib/support/stack_lockfree.h @@ -0,0 +1,53 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H +#define GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H + +#include <stddef.h> + +typedef struct gpr_stack_lockfree gpr_stack_lockfree; + +/* This stack must specify the maximum number of entries to track. + The current implementation only allows up to 65534 entries */ +gpr_stack_lockfree *gpr_stack_lockfree_create(size_t entries); +void gpr_stack_lockfree_destroy(gpr_stack_lockfree *stack); + +/* Pass in a valid entry number for the next stack entry */ +/* Returns 1 if this is the first element on the stack, 0 otherwise */ +int gpr_stack_lockfree_push(gpr_stack_lockfree *, int entry); + +/* Returns -1 on empty or the actual entry number */ +int gpr_stack_lockfree_pop(gpr_stack_lockfree *stack); + +#endif /* GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H */ diff --git a/src/core/lib/support/string.c b/src/core/lib/support/string.c new file mode 100644 index 0000000000..a2ab6c5f1f --- /dev/null +++ b/src/core/lib/support/string.c @@ -0,0 +1,296 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "src/core/lib/support/string.h" + +#include <ctype.h> +#include <stddef.h> +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/port_platform.h> +#include <grpc/support/useful.h> + +char *gpr_strdup(const char *src) { + char *dst; + size_t len; + + if (!src) { + return NULL; + } + + len = strlen(src) + 1; + dst = gpr_malloc(len); + + memcpy(dst, src, len); + + return dst; +} + +typedef struct { + size_t capacity; + size_t length; + char *data; +} dump_out; + +static dump_out dump_out_create(void) { + dump_out r = {0, 0, NULL}; + return r; +} + +static void dump_out_append(dump_out *out, char c) { + if (out->length == out->capacity) { + out->capacity = GPR_MAX(8, 2 * out->capacity); + out->data = gpr_realloc(out->data, out->capacity); + } + out->data[out->length++] = c; +} + +static void hexdump(dump_out *out, const char *buf, size_t len) { + static const char hex[16] = "0123456789abcdef"; + + const uint8_t *const beg = (const uint8_t *)buf; + const uint8_t *const end = beg + len; + const uint8_t *cur; + + for (cur = beg; cur != end; ++cur) { + if (cur != beg) dump_out_append(out, ' '); + dump_out_append(out, hex[*cur >> 4]); + dump_out_append(out, hex[*cur & 0xf]); + } +} + +static void asciidump(dump_out *out, const char *buf, size_t len) { + const uint8_t *const beg = (const uint8_t *)buf; + const uint8_t *const end = beg + len; + const uint8_t *cur; + int out_was_empty = (out->length == 0); + if (!out_was_empty) { + dump_out_append(out, ' '); + dump_out_append(out, '\''); + } + for (cur = beg; cur != end; ++cur) { + dump_out_append(out, (char)(isprint(*cur) ? *(char *)cur : '.')); + } + if (!out_was_empty) { + dump_out_append(out, '\''); + } +} + +char *gpr_dump(const char *buf, size_t len, uint32_t flags) { + dump_out out = dump_out_create(); + if (flags & GPR_DUMP_HEX) { + hexdump(&out, buf, len); + } + if (flags & GPR_DUMP_ASCII) { + asciidump(&out, buf, len); + } + dump_out_append(&out, 0); + return out.data; +} + +char *gpr_dump_slice(gpr_slice s, uint32_t flags) { + return gpr_dump((const char *)GPR_SLICE_START_PTR(s), GPR_SLICE_LENGTH(s), + flags); +} + +int gpr_parse_bytes_to_uint32(const char *buf, size_t len, uint32_t *result) { + uint32_t out = 0; + uint32_t new; + size_t i; + + if (len == 0) return 0; /* must have some bytes */ + + for (i = 0; i < len; i++) { + if (buf[i] < '0' || buf[i] > '9') return 0; /* bad char */ + new = 10 * out + (uint32_t)(buf[i] - '0'); + if (new < out) return 0; /* overflow */ + out = new; + } + + *result = out; + return 1; +} + +void gpr_reverse_bytes(char *str, int len) { + char *p1, *p2; + for (p1 = str, p2 = str + len - 1; p2 > p1; ++p1, --p2) { + char temp = *p1; + *p1 = *p2; + *p2 = temp; + } +} + +int gpr_ltoa(long value, char *string) { + long sign; + int i = 0; + + if (value == 0) { + string[0] = '0'; + string[1] = 0; + return 1; + } + + sign = value < 0 ? -1 : 1; + while (value) { + string[i++] = (char)('0' + sign * (value % 10)); + value /= 10; + } + if (sign < 0) string[i++] = '-'; + gpr_reverse_bytes(string, i); + string[i] = 0; + return i; +} + +int int64_ttoa(int64_t value, char *string) { + int64_t sign; + int i = 0; + + if (value == 0) { + string[0] = '0'; + string[1] = 0; + return 1; + } + + sign = value < 0 ? -1 : 1; + while (value) { + string[i++] = (char)('0' + sign * (value % 10)); + value /= 10; + } + if (sign < 0) string[i++] = '-'; + gpr_reverse_bytes(string, i); + string[i] = 0; + return i; +} + +char *gpr_strjoin(const char **strs, size_t nstrs, size_t *final_length) { + return gpr_strjoin_sep(strs, nstrs, "", final_length); +} + +char *gpr_strjoin_sep(const char **strs, size_t nstrs, const char *sep, + size_t *final_length) { + const size_t sep_len = strlen(sep); + size_t out_length = 0; + size_t i; + char *out; + for (i = 0; i < nstrs; i++) { + out_length += strlen(strs[i]); + } + out_length += 1; /* null terminator */ + if (nstrs > 0) { + out_length += sep_len * (nstrs - 1); /* separators */ + } + out = gpr_malloc(out_length); + out_length = 0; + for (i = 0; i < nstrs; i++) { + const size_t slen = strlen(strs[i]); + if (i != 0) { + memcpy(out + out_length, sep, sep_len); + out_length += sep_len; + } + memcpy(out + out_length, strs[i], slen); + out_length += slen; + } + out[out_length] = 0; + if (final_length != NULL) { + *final_length = out_length; + } + return out; +} + +/** Finds the initial (\a begin) and final (\a end) offsets of the next + * substring from \a str + \a read_offset until the next \a sep or the end of \a + * str. + * + * Returns 1 and updates \a begin and \a end. Returns 0 otherwise. */ +static int slice_find_separator_offset(const gpr_slice str, const char *sep, + const size_t read_offset, size_t *begin, + size_t *end) { + size_t i; + const uint8_t *str_ptr = GPR_SLICE_START_PTR(str) + read_offset; + const size_t str_len = GPR_SLICE_LENGTH(str) - read_offset; + const size_t sep_len = strlen(sep); + if (str_len < sep_len) { + return 0; + } + + for (i = 0; i <= str_len - sep_len; i++) { + if (memcmp(str_ptr + i, sep, sep_len) == 0) { + *begin = read_offset; + *end = read_offset + i; + return 1; + } + } + return 0; +} + +void gpr_slice_split(gpr_slice str, const char *sep, gpr_slice_buffer *dst) { + const size_t sep_len = strlen(sep); + size_t begin, end; + + GPR_ASSERT(sep_len > 0); + + if (slice_find_separator_offset(str, sep, 0, &begin, &end) != 0) { + do { + gpr_slice_buffer_add_indexed(dst, gpr_slice_sub(str, begin, end)); + } while (slice_find_separator_offset(str, sep, end + sep_len, &begin, + &end) != 0); + gpr_slice_buffer_add_indexed( + dst, gpr_slice_sub(str, end + sep_len, GPR_SLICE_LENGTH(str))); + } else { /* no sep found, add whole input */ + gpr_slice_buffer_add_indexed(dst, gpr_slice_ref(str)); + } +} + +void gpr_strvec_init(gpr_strvec *sv) { memset(sv, 0, sizeof(*sv)); } + +void gpr_strvec_destroy(gpr_strvec *sv) { + size_t i; + for (i = 0; i < sv->count; i++) { + gpr_free(sv->strs[i]); + } + gpr_free(sv->strs); +} + +void gpr_strvec_add(gpr_strvec *sv, char *str) { + if (sv->count == sv->capacity) { + sv->capacity = GPR_MAX(sv->capacity + 8, sv->capacity * 2); + sv->strs = gpr_realloc(sv->strs, sizeof(char *) * sv->capacity); + } + sv->strs[sv->count++] = str; +} + +char *gpr_strvec_flatten(gpr_strvec *sv, size_t *final_length) { + return gpr_strjoin((const char **)sv->strs, sv->count, final_length); +} diff --git a/src/core/lib/support/string.h b/src/core/lib/support/string.h new file mode 100644 index 0000000000..ea58610914 --- /dev/null +++ b/src/core/lib/support/string.h @@ -0,0 +1,121 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_STRING_H +#define GRPC_CORE_LIB_SUPPORT_STRING_H + +#include <stddef.h> + +#include <grpc/support/port_platform.h> +#include <grpc/support/slice.h> +#include <grpc/support/slice_buffer.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* String utility functions */ + +/* Flags for gpr_dump function. */ +#define GPR_DUMP_HEX 0x00000001 +#define GPR_DUMP_ASCII 0x00000002 + +/* Converts array buf, of length len, into a C string according to the flags. + Result should be freed with gpr_free() */ +char *gpr_dump(const char *buf, size_t len, uint32_t flags); + +/* Calls gpr_dump on a slice. */ +char *gpr_dump_slice(gpr_slice slice, uint32_t flags); + +/* Parses an array of bytes into an integer (base 10). Returns 1 on success, + 0 on failure. */ +int gpr_parse_bytes_to_uint32(const char *data, size_t length, + uint32_t *result); + +/* Minimum buffer size for calling ltoa */ +#define GPR_LTOA_MIN_BUFSIZE (3 * sizeof(long)) + +/* Convert a long to a string in base 10; returns the length of the + output string (or 0 on failure). + output must be at least GPR_LTOA_MIN_BUFSIZE bytes long. */ +int gpr_ltoa(long value, char *output); + +/* Minimum buffer size for calling int64toa */ +#define GPR_INT64TOA_MIN_BUFSIZE (3 * sizeof(int64_t)) + +/* Convert an int64 to a string in base 10; returns the length of the +output string (or 0 on failure). +output must be at least GPR_INT64TOA_MIN_BUFSIZE bytes long. +NOTE: This function ensures sufficient bit width even on Win x64, +where long is 32bit is size.*/ +int int64_ttoa(int64_t value, char *output); + +/* Reverse a run of bytes */ +void gpr_reverse_bytes(char *str, int len); + +/* Join a set of strings, returning the resulting string. + Total combined length (excluding null terminator) is returned in total_length + if it is non-null. */ +char *gpr_strjoin(const char **strs, size_t nstrs, size_t *total_length); + +/* Join a set of strings using a separator, returning the resulting string. + Total combined length (excluding null terminator) is returned in total_length + if it is non-null. */ +char *gpr_strjoin_sep(const char **strs, size_t nstrs, const char *sep, + size_t *total_length); + +/** Split \a str by the separator \a sep. Results are stored in \a dst, which + * should be a properly initialized instance. */ +void gpr_slice_split(gpr_slice str, const char *sep, gpr_slice_buffer *dst); + +/* A vector of strings... for building up a final string one piece at a time */ +typedef struct { + char **strs; + size_t count; + size_t capacity; +} gpr_strvec; + +/* Initialize/destroy */ +void gpr_strvec_init(gpr_strvec *strs); +void gpr_strvec_destroy(gpr_strvec *strs); +/* Add a string to a strvec, takes ownership of the string */ +void gpr_strvec_add(gpr_strvec *strs, char *add); +/* Return a joined string with all added substrings, optionally setting + total_length as per gpr_strjoin */ +char *gpr_strvec_flatten(gpr_strvec *strs, size_t *total_length); + +#ifdef __cplusplus +} +#endif + +#endif /* GRPC_CORE_LIB_SUPPORT_STRING_H */ diff --git a/src/core/lib/support/string_posix.c b/src/core/lib/support/string_posix.c new file mode 100644 index 0000000000..c804ed5ded --- /dev/null +++ b/src/core/lib/support/string_posix.c @@ -0,0 +1,86 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_POSIX_STRING + +#include <stdarg.h> +#include <stdio.h> +#include <string.h> + +#include <grpc/support/alloc.h> + +int gpr_asprintf(char **strp, const char *format, ...) { + va_list args; + int ret; + char buf[64]; + size_t strp_buflen; + + /* Use a constant-sized buffer to determine the length. */ + va_start(args, format); + ret = vsnprintf(buf, sizeof(buf), format, args); + va_end(args); + if (ret < 0) { + *strp = NULL; + return -1; + } + + /* Allocate a new buffer, with space for the NUL terminator. */ + strp_buflen = (size_t)ret + 1; + if ((*strp = gpr_malloc(strp_buflen)) == NULL) { + /* This shouldn't happen, because gpr_malloc() calls abort(). */ + return -1; + } + + /* Return early if we have all the bytes. */ + if (strp_buflen <= sizeof(buf)) { + memcpy(*strp, buf, strp_buflen); + return ret; + } + + /* Try again using the larger buffer. */ + va_start(args, format); + ret = vsnprintf(*strp, strp_buflen, format, args); + va_end(args); + if ((size_t)ret == strp_buflen - 1) { + return ret; + } + + /* This should never happen. */ + gpr_free(*strp); + *strp = NULL; + return -1; +} + +#endif /* GPR_POSIX_STRING */ diff --git a/src/core/lib/support/string_win32.c b/src/core/lib/support/string_win32.c new file mode 100644 index 0000000000..a2f9857356 --- /dev/null +++ b/src/core/lib/support/string_win32.c @@ -0,0 +1,109 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Posix code for gpr snprintf support. */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 + +#include <stdarg.h> +#include <stdio.h> +#include <string.h> + +#include <grpc/support/alloc.h> + +#include "src/core/lib/support/string.h" + +int gpr_asprintf(char **strp, const char *format, ...) { + va_list args; + int ret; + size_t strp_buflen; + + /* Determine the length. */ + va_start(args, format); + ret = _vscprintf(format, args); + va_end(args); + if (ret < 0) { + *strp = NULL; + return -1; + } + + /* Allocate a new buffer, with space for the NUL terminator. */ + strp_buflen = (size_t)ret + 1; + if ((*strp = gpr_malloc(strp_buflen)) == NULL) { + /* This shouldn't happen, because gpr_malloc() calls abort(). */ + return -1; + } + + /* Print to the buffer. */ + va_start(args, format); + ret = vsnprintf_s(*strp, strp_buflen, _TRUNCATE, format, args); + va_end(args); + if ((size_t)ret == strp_buflen - 1) { + return ret; + } + + /* This should never happen. */ + gpr_free(*strp); + *strp = NULL; + return -1; +} + +#if defined UNICODE || defined _UNICODE +LPTSTR +gpr_char_to_tchar(LPCSTR input) { + LPTSTR ret; + int needed = MultiByteToWideChar(CP_UTF8, 0, input, -1, NULL, 0); + if (needed <= 0) return NULL; + ret = gpr_malloc((unsigned)needed * sizeof(TCHAR)); + MultiByteToWideChar(CP_UTF8, 0, input, -1, ret, needed); + return ret; +} + +LPSTR +gpr_tchar_to_char(LPCTSTR input) { + LPSTR ret; + int needed = WideCharToMultiByte(CP_UTF8, 0, input, -1, NULL, 0, NULL, NULL); + if (needed <= 0) return NULL; + ret = gpr_malloc((unsigned)needed); + WideCharToMultiByte(CP_UTF8, 0, input, -1, ret, needed, NULL, NULL); + return ret; +} +#else +char *gpr_tchar_to_char(LPTSTR input) { return gpr_strdup(input); } + +char *gpr_char_to_tchar(LPTSTR input) { return gpr_strdup(input); } +#endif + +#endif /* GPR_WIN32 */ diff --git a/src/core/lib/support/string_win32.h b/src/core/lib/support/string_win32.h new file mode 100644 index 0000000000..ff4a694ca9 --- /dev/null +++ b/src/core/lib/support/string_win32.h @@ -0,0 +1,47 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_STRING_WIN32_H +#define GRPC_CORE_LIB_SUPPORT_STRING_WIN32_H + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 + +/* These allocate new strings using gpr_malloc to convert from and to utf-8. */ +LPTSTR gpr_char_to_tchar(LPCSTR input); +LPSTR gpr_tchar_to_char(LPCTSTR input); + +#endif /* GPR_WIN32 */ + +#endif /* GRPC_CORE_LIB_SUPPORT_STRING_WIN32_H */ diff --git a/src/core/lib/support/subprocess_posix.c b/src/core/lib/support/subprocess_posix.c new file mode 100644 index 0000000000..4f4de9298e --- /dev/null +++ b/src/core/lib/support/subprocess_posix.c @@ -0,0 +1,112 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_POSIX_SUBPROCESS + +#include <grpc/support/subprocess.h> + +#include <assert.h> +#include <errno.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> + +struct gpr_subprocess { + int pid; + int joined; +}; + +const char *gpr_subprocess_binary_extension() { return ""; } + +gpr_subprocess *gpr_subprocess_create(int argc, const char **argv) { + gpr_subprocess *r; + int pid; + char **exec_args; + + pid = fork(); + if (pid == -1) { + return NULL; + } else if (pid == 0) { + exec_args = gpr_malloc(((size_t)argc + 1) * sizeof(char *)); + memcpy(exec_args, argv, (size_t)argc * sizeof(char *)); + exec_args[argc] = NULL; + execv(exec_args[0], exec_args); + /* if we reach here, an error has occurred */ + gpr_log(GPR_ERROR, "execv '%s' failed: %s", exec_args[0], strerror(errno)); + _exit(1); + return NULL; + } else { + r = gpr_malloc(sizeof(gpr_subprocess)); + memset(r, 0, sizeof(*r)); + r->pid = pid; + return r; + } +} + +void gpr_subprocess_destroy(gpr_subprocess *p) { + if (!p->joined) { + kill(p->pid, SIGKILL); + gpr_subprocess_join(p); + } + gpr_free(p); +} + +int gpr_subprocess_join(gpr_subprocess *p) { + int status; +retry: + if (waitpid(p->pid, &status, 0) == -1) { + if (errno == EINTR) { + goto retry; + } + gpr_log(GPR_ERROR, "waitpid failed: %s", strerror(errno)); + return -1; + } + return status; +} + +void gpr_subprocess_interrupt(gpr_subprocess *p) { + if (!p->joined) { + kill(p->pid, SIGINT); + } +} + +#endif /* GPR_POSIX_SUBPROCESS */ diff --git a/src/core/lib/support/subprocess_windows.c b/src/core/lib/support/subprocess_windows.c new file mode 100644 index 0000000000..264306f1bd --- /dev/null +++ b/src/core/lib/support/subprocess_windows.c @@ -0,0 +1,141 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WINDOWS_SUBPROCESS + +#include <string.h> +#include <tchar.h> +#include <windows.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/subprocess.h> +#include "src/core/lib/support/string.h" +#include "src/core/lib/support/string_win32.h" + +struct gpr_subprocess { + PROCESS_INFORMATION pi; + int joined; + int interrupted; +}; + +const char *gpr_subprocess_binary_extension() { return ".exe"; } + +gpr_subprocess *gpr_subprocess_create(int argc, const char **argv) { + gpr_subprocess *r; + + STARTUPINFO si; + PROCESS_INFORMATION pi; + + char *args = gpr_strjoin_sep(argv, (size_t)argc, " ", NULL); + TCHAR *args_tchar; + + args_tchar = gpr_char_to_tchar(args); + gpr_free(args); + + memset(&si, 0, sizeof(si)); + si.cb = sizeof(si); + memset(&pi, 0, sizeof(pi)); + + if (!CreateProcess(NULL, args_tchar, NULL, NULL, FALSE, + CREATE_NEW_PROCESS_GROUP, NULL, NULL, &si, &pi)) { + gpr_free(args_tchar); + return NULL; + } + gpr_free(args_tchar); + + r = gpr_malloc(sizeof(gpr_subprocess)); + memset(r, 0, sizeof(*r)); + r->pi = pi; + return r; +} + +void gpr_subprocess_destroy(gpr_subprocess *p) { + if (p) { + if (!p->joined) { + gpr_subprocess_interrupt(p); + gpr_subprocess_join(p); + } + if (p->pi.hProcess) { + CloseHandle(p->pi.hProcess); + } + if (p->pi.hThread) { + CloseHandle(p->pi.hThread); + } + gpr_free(p); + } +} + +int gpr_subprocess_join(gpr_subprocess *p) { + DWORD dwExitCode; + if (GetExitCodeProcess(p->pi.hProcess, &dwExitCode)) { + if (dwExitCode == STILL_ACTIVE) { + if (WaitForSingleObject(p->pi.hProcess, INFINITE) == WAIT_OBJECT_0) { + p->joined = 1; + goto getExitCode; + } + return -1; // failed to join + } else { + goto getExitCode; + } + } else { + return -1; // failed to get exit code + } + +getExitCode: + if (p->interrupted) { + return 0; + } + if (GetExitCodeProcess(p->pi.hProcess, &dwExitCode)) { + return (int)dwExitCode; + } else { + return -1; // failed to get exit code + } +} + +void gpr_subprocess_interrupt(gpr_subprocess *p) { + DWORD dwExitCode; + if (GetExitCodeProcess(p->pi.hProcess, &dwExitCode)) { + if (dwExitCode == STILL_ACTIVE) { + gpr_log(GPR_INFO, "sending ctrl-break"); + GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, p->pi.dwProcessId); + p->joined = 1; + p->interrupted = 1; + } + } + return; +} + +#endif /* GPR_WINDOWS_SUBPROCESS */ diff --git a/src/core/lib/support/sync.c b/src/core/lib/support/sync.c new file mode 100644 index 0000000000..44b83f8175 --- /dev/null +++ b/src/core/lib/support/sync.c @@ -0,0 +1,127 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Generic implementation of synchronization primitives. */ + +#include <grpc/support/atm.h> +#include <grpc/support/log.h> +#include <grpc/support/sync.h> + +/* Number of mutexes to allocate for events, to avoid lock contention. + Should be a prime. */ +enum { event_sync_partitions = 31 }; + +/* Events are partitioned by address to avoid lock contention. */ +static struct sync_array_s { + gpr_mu mu; + gpr_cv cv; +} sync_array[event_sync_partitions]; + +/* This routine is executed once on first use, via event_once */ +static gpr_once event_once = GPR_ONCE_INIT; +static void event_initialize(void) { + int i; + for (i = 0; i != event_sync_partitions; i++) { + gpr_mu_init(&sync_array[i].mu); + gpr_cv_init(&sync_array[i].cv); + } +} + +/* Hash ev into an element of sync_array[]. */ +static struct sync_array_s *hash(gpr_event *ev) { + return &sync_array[((uintptr_t)ev) % event_sync_partitions]; +} + +void gpr_event_init(gpr_event *ev) { + gpr_once_init(&event_once, &event_initialize); + ev->state = 0; +} + +void gpr_event_set(gpr_event *ev, void *value) { + struct sync_array_s *s = hash(ev); + gpr_mu_lock(&s->mu); + GPR_ASSERT(gpr_atm_acq_load(&ev->state) == 0); + gpr_atm_rel_store(&ev->state, (gpr_atm)value); + gpr_cv_broadcast(&s->cv); + gpr_mu_unlock(&s->mu); + GPR_ASSERT(value != NULL); +} + +void *gpr_event_get(gpr_event *ev) { + return (void *)gpr_atm_acq_load(&ev->state); +} + +void *gpr_event_wait(gpr_event *ev, gpr_timespec abs_deadline) { + void *result = (void *)gpr_atm_acq_load(&ev->state); + if (result == NULL) { + struct sync_array_s *s = hash(ev); + gpr_mu_lock(&s->mu); + do { + result = (void *)gpr_atm_acq_load(&ev->state); + } while (result == NULL && !gpr_cv_wait(&s->cv, &s->mu, abs_deadline)); + gpr_mu_unlock(&s->mu); + } + return result; +} + +void gpr_ref_init(gpr_refcount *r, int n) { gpr_atm_rel_store(&r->count, n); } + +void gpr_ref(gpr_refcount *r) { gpr_atm_no_barrier_fetch_add(&r->count, 1); } + +void gpr_ref_non_zero(gpr_refcount *r) { + gpr_atm prior = gpr_atm_no_barrier_fetch_add(&r->count, 1); + GPR_ASSERT(prior > 0); +} + +void gpr_refn(gpr_refcount *r, int n) { + gpr_atm_no_barrier_fetch_add(&r->count, n); +} + +int gpr_unref(gpr_refcount *r) { + gpr_atm prior = gpr_atm_full_fetch_add(&r->count, -1); + GPR_ASSERT(prior > 0); + return prior == 1; +} + +void gpr_stats_init(gpr_stats_counter *c, intptr_t n) { + gpr_atm_rel_store(&c->value, n); +} + +void gpr_stats_inc(gpr_stats_counter *c, intptr_t inc) { + gpr_atm_no_barrier_fetch_add(&c->value, inc); +} + +intptr_t gpr_stats_read(const gpr_stats_counter *c) { + /* don't need acquire-load, but we have no no-barrier load yet */ + return gpr_atm_acq_load(&c->value); +} diff --git a/src/core/lib/support/sync_posix.c b/src/core/lib/support/sync_posix.c new file mode 100644 index 0000000000..dcb0969a4e --- /dev/null +++ b/src/core/lib/support/sync_posix.c @@ -0,0 +1,104 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_POSIX_SYNC + +#include <errno.h> +#include <grpc/support/log.h> +#include <grpc/support/sync.h> +#include <grpc/support/time.h> +#include <time.h> +#include "src/core/lib/profiling/timers.h" + +void gpr_mu_init(gpr_mu* mu) { GPR_ASSERT(pthread_mutex_init(mu, NULL) == 0); } + +void gpr_mu_destroy(gpr_mu* mu) { GPR_ASSERT(pthread_mutex_destroy(mu) == 0); } + +void gpr_mu_lock(gpr_mu* mu) { + GPR_TIMER_BEGIN("gpr_mu_lock", 0); + GPR_ASSERT(pthread_mutex_lock(mu) == 0); + GPR_TIMER_END("gpr_mu_lock", 0); +} + +void gpr_mu_unlock(gpr_mu* mu) { + GPR_TIMER_BEGIN("gpr_mu_unlock", 0); + GPR_ASSERT(pthread_mutex_unlock(mu) == 0); + GPR_TIMER_END("gpr_mu_unlock", 0); +} + +int gpr_mu_trylock(gpr_mu* mu) { + int err; + GPR_TIMER_BEGIN("gpr_mu_trylock", 0); + err = pthread_mutex_trylock(mu); + GPR_ASSERT(err == 0 || err == EBUSY); + GPR_TIMER_END("gpr_mu_trylock", 0); + return err == 0; +} + +/*----------------------------------------*/ + +void gpr_cv_init(gpr_cv* cv) { GPR_ASSERT(pthread_cond_init(cv, NULL) == 0); } + +void gpr_cv_destroy(gpr_cv* cv) { GPR_ASSERT(pthread_cond_destroy(cv) == 0); } + +int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) { + int err = 0; + if (gpr_time_cmp(abs_deadline, gpr_inf_future(abs_deadline.clock_type)) == + 0) { + err = pthread_cond_wait(cv, mu); + } else { + struct timespec abs_deadline_ts; + abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_REALTIME); + abs_deadline_ts.tv_sec = (time_t)abs_deadline.tv_sec; + abs_deadline_ts.tv_nsec = abs_deadline.tv_nsec; + err = pthread_cond_timedwait(cv, mu, &abs_deadline_ts); + } + GPR_ASSERT(err == 0 || err == ETIMEDOUT || err == EAGAIN); + return err == ETIMEDOUT; +} + +void gpr_cv_signal(gpr_cv* cv) { GPR_ASSERT(pthread_cond_signal(cv) == 0); } + +void gpr_cv_broadcast(gpr_cv* cv) { + GPR_ASSERT(pthread_cond_broadcast(cv) == 0); +} + +/*----------------------------------------*/ + +void gpr_once_init(gpr_once* once, void (*init_function)(void)) { + GPR_ASSERT(pthread_once(once, init_function) == 0); +} + +#endif /* GRP_POSIX_SYNC */ diff --git a/src/core/lib/support/sync_win32.c b/src/core/lib/support/sync_win32.c new file mode 100644 index 0000000000..470a9f9704 --- /dev/null +++ b/src/core/lib/support/sync_win32.c @@ -0,0 +1,133 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Win32 code for gpr synchronization support. */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 + +#include <grpc/support/log.h> +#include <grpc/support/sync.h> +#include <grpc/support/time.h> + +void gpr_mu_init(gpr_mu *mu) { + InitializeCriticalSection(&mu->cs); + mu->locked = 0; +} + +void gpr_mu_destroy(gpr_mu *mu) { DeleteCriticalSection(&mu->cs); } + +void gpr_mu_lock(gpr_mu *mu) { + EnterCriticalSection(&mu->cs); + GPR_ASSERT(!mu->locked); + mu->locked = 1; +} + +void gpr_mu_unlock(gpr_mu *mu) { + mu->locked = 0; + LeaveCriticalSection(&mu->cs); +} + +int gpr_mu_trylock(gpr_mu *mu) { + int result = TryEnterCriticalSection(&mu->cs); + if (result) { + if (mu->locked) { /* This thread already holds the lock. */ + LeaveCriticalSection(&mu->cs); /* Decrement lock count. */ + result = 0; /* Indicate failure */ + } + mu->locked = 1; + } + return result; +} + +/*----------------------------------------*/ + +void gpr_cv_init(gpr_cv *cv) { InitializeConditionVariable(cv); } + +void gpr_cv_destroy(gpr_cv *cv) { + /* Condition variables don't need destruction in Win32. */ +} + +int gpr_cv_wait(gpr_cv *cv, gpr_mu *mu, gpr_timespec abs_deadline) { + int timeout = 0; + DWORD timeout_max_ms; + mu->locked = 0; + if (gpr_time_cmp(abs_deadline, gpr_inf_future(abs_deadline.clock_type)) == + 0) { + SleepConditionVariableCS(cv, &mu->cs, INFINITE); + } else { + abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_REALTIME); + gpr_timespec now = gpr_now(abs_deadline.clock_type); + int64_t now_ms = (int64_t)now.tv_sec * 1000 + now.tv_nsec / 1000000; + int64_t deadline_ms = + (int64_t)abs_deadline.tv_sec * 1000 + abs_deadline.tv_nsec / 1000000; + if (now_ms >= deadline_ms) { + timeout = 1; + } else { + if ((deadline_ms - now_ms) >= INFINITE) { + timeout_max_ms = INFINITE - 1; + } else { + timeout_max_ms = (DWORD)(deadline_ms - now_ms); + } + timeout = (SleepConditionVariableCS(cv, &mu->cs, timeout_max_ms) == 0 && + GetLastError() == ERROR_TIMEOUT); + } + } + mu->locked = 1; + return timeout; +} + +void gpr_cv_signal(gpr_cv *cv) { WakeConditionVariable(cv); } + +void gpr_cv_broadcast(gpr_cv *cv) { WakeAllConditionVariable(cv); } + +/*----------------------------------------*/ + +static void *dummy; +struct run_once_func_arg { + void (*init_function)(void); +}; +static BOOL CALLBACK run_once_func(gpr_once *once, void *v, void **pv) { + struct run_once_func_arg *arg = v; + (*arg->init_function)(); + return 1; +} + +void gpr_once_init(gpr_once *once, void (*init_function)(void)) { + struct run_once_func_arg arg; + arg.init_function = init_function; + InitOnceExecuteOnce(once, run_once_func, &arg, &dummy); +} + +#endif /* GPR_WIN32 */ diff --git a/src/core/lib/support/thd.c b/src/core/lib/support/thd.c new file mode 100644 index 0000000000..41daeb5d0e --- /dev/null +++ b/src/core/lib/support/thd.c @@ -0,0 +1,64 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Posix implementation for gpr threads. */ + +#include <memory.h> + +#include <grpc/support/thd.h> + +enum { GPR_THD_JOINABLE = 1 }; + +gpr_thd_options gpr_thd_options_default(void) { + gpr_thd_options options; + memset(&options, 0, sizeof(options)); + return options; +} + +void gpr_thd_options_set_detached(gpr_thd_options* options) { + options->flags &= ~GPR_THD_JOINABLE; +} + +void gpr_thd_options_set_joinable(gpr_thd_options* options) { + options->flags |= GPR_THD_JOINABLE; +} + +int gpr_thd_options_is_detached(const gpr_thd_options* options) { + if (!options) return 1; + return (options->flags & GPR_THD_JOINABLE) == 0; +} + +int gpr_thd_options_is_joinable(const gpr_thd_options* options) { + if (!options) return 0; + return (options->flags & GPR_THD_JOINABLE) == GPR_THD_JOINABLE; +} diff --git a/src/core/lib/support/thd_internal.h b/src/core/lib/support/thd_internal.h new file mode 100644 index 0000000000..975d5537cc --- /dev/null +++ b/src/core/lib/support/thd_internal.h @@ -0,0 +1,39 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H +#define GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H + +/* Internal interfaces between modules within the gpr support library. */ + +#endif /* GRPC_CORE_LIB_SUPPORT_THD_INTERNAL_H */ diff --git a/src/core/lib/support/thd_posix.c b/src/core/lib/support/thd_posix.c new file mode 100644 index 0000000000..89832e3ce1 --- /dev/null +++ b/src/core/lib/support/thd_posix.c @@ -0,0 +1,94 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Posix implementation for gpr threads. */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_POSIX_SYNC + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/thd.h> +#include <grpc/support/useful.h> +#include <pthread.h> +#include <stdlib.h> +#include <string.h> + +struct thd_arg { + void (*body)(void *arg); /* body of a thread */ + void *arg; /* argument to a thread */ +}; + +/* Body of every thread started via gpr_thd_new. */ +static void *thread_body(void *v) { + struct thd_arg a = *(struct thd_arg *)v; + free(v); + (*a.body)(a.arg); + return NULL; +} + +int gpr_thd_new(gpr_thd_id *t, void (*thd_body)(void *arg), void *arg, + const gpr_thd_options *options) { + int thread_started; + pthread_attr_t attr; + pthread_t p; + /* don't use gpr_malloc as we may cause an infinite recursion with + * the profiling code */ + struct thd_arg *a = malloc(sizeof(*a)); + GPR_ASSERT(a != NULL); + a->body = thd_body; + a->arg = arg; + + GPR_ASSERT(pthread_attr_init(&attr) == 0); + if (gpr_thd_options_is_detached(options)) { + GPR_ASSERT(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) == + 0); + } else { + GPR_ASSERT(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE) == + 0); + } + thread_started = (pthread_create(&p, &attr, &thread_body, a) == 0); + GPR_ASSERT(pthread_attr_destroy(&attr) == 0); + if (!thread_started) { + free(a); + } + *t = (gpr_thd_id)p; + return thread_started; +} + +gpr_thd_id gpr_thd_currentid(void) { return (gpr_thd_id)pthread_self(); } + +void gpr_thd_join(gpr_thd_id t) { pthread_join((pthread_t)t, NULL); } + +#endif /* GPR_POSIX_SYNC */ diff --git a/src/core/lib/support/thd_win32.c b/src/core/lib/support/thd_win32.c new file mode 100644 index 0000000000..6deb3140eb --- /dev/null +++ b/src/core/lib/support/thd_win32.c @@ -0,0 +1,117 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Windows implementation for gpr threads. */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/thd.h> +#include <string.h> + +#if defined(_MSC_VER) +#define thread_local __declspec(thread) +#elif defined(__GNUC__) +#define thread_local __thread +#else +#error "Unknown compiler - please file a bug report" +#endif + +struct thd_info { + void (*body)(void *arg); /* body of a thread */ + void *arg; /* argument to a thread */ + HANDLE join_event; /* if joinable, the join event */ + int joinable; /* true if not detached */ +}; + +static thread_local struct thd_info *g_thd_info; + +/* Destroys a thread info */ +static void destroy_thread(struct thd_info *t) { + if (t->joinable) CloseHandle(t->join_event); + gpr_free(t); +} + +/* Body of every thread started via gpr_thd_new. */ +static DWORD WINAPI thread_body(void *v) { + g_thd_info = (struct thd_info *)v; + g_thd_info->body(g_thd_info->arg); + if (g_thd_info->joinable) { + BOOL ret = SetEvent(g_thd_info->join_event); + GPR_ASSERT(ret); + } else { + destroy_thread(g_thd_info); + } + return 0; +} + +int gpr_thd_new(gpr_thd_id *t, void (*thd_body)(void *arg), void *arg, + const gpr_thd_options *options) { + HANDLE handle; + struct thd_info *info = gpr_malloc(sizeof(*info)); + info->body = thd_body; + info->arg = arg; + *t = 0; + if (gpr_thd_options_is_joinable(options)) { + info->joinable = 1; + info->join_event = CreateEvent(NULL, FALSE, FALSE, NULL); + if (info->join_event == NULL) { + gpr_free(info); + return 0; + } + } else { + info->joinable = 0; + } + handle = CreateThread(NULL, 64 * 1024, thread_body, info, 0, NULL); + if (handle == NULL) { + destroy_thread(info); + } else { + *t = (gpr_thd_id)info; + CloseHandle(handle); + } + return handle != NULL; +} + +gpr_thd_id gpr_thd_currentid(void) { return (gpr_thd_id)g_thd_info; } + +void gpr_thd_join(gpr_thd_id t) { + struct thd_info *info = (struct thd_info *)t; + DWORD ret = WaitForSingleObject(info->join_event, INFINITE); + GPR_ASSERT(ret == WAIT_OBJECT_0); + destroy_thread(info); +} + +#endif /* GPR_WIN32 */ diff --git a/src/core/lib/support/time.c b/src/core/lib/support/time.c new file mode 100644 index 0000000000..57f8331194 --- /dev/null +++ b/src/core/lib/support/time.c @@ -0,0 +1,304 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Generic implementation of time calls. */ + +#include <grpc/support/log.h> +#include <grpc/support/time.h> +#include <limits.h> +#include <stdio.h> +#include <string.h> + +int gpr_time_cmp(gpr_timespec a, gpr_timespec b) { + int cmp = (a.tv_sec > b.tv_sec) - (a.tv_sec < b.tv_sec); + GPR_ASSERT(a.clock_type == b.clock_type); + if (cmp == 0) { + cmp = (a.tv_nsec > b.tv_nsec) - (a.tv_nsec < b.tv_nsec); + } + return cmp; +} + +gpr_timespec gpr_time_min(gpr_timespec a, gpr_timespec b) { + return gpr_time_cmp(a, b) < 0 ? a : b; +} + +gpr_timespec gpr_time_max(gpr_timespec a, gpr_timespec b) { + return gpr_time_cmp(a, b) > 0 ? a : b; +} + +gpr_timespec gpr_time_0(gpr_clock_type type) { + gpr_timespec out; + out.tv_sec = 0; + out.tv_nsec = 0; + out.clock_type = type; + return out; +} + +gpr_timespec gpr_inf_future(gpr_clock_type type) { + gpr_timespec out; + out.tv_sec = INT64_MAX; + out.tv_nsec = 0; + out.clock_type = type; + return out; +} + +gpr_timespec gpr_inf_past(gpr_clock_type type) { + gpr_timespec out; + out.tv_sec = INT64_MIN; + out.tv_nsec = 0; + out.clock_type = type; + return out; +} + +/* TODO(ctiller): consider merging _nanos, _micros, _millis into a single + function for maintainability. Similarly for _seconds, _minutes, and _hours */ + +gpr_timespec gpr_time_from_nanos(int64_t ns, gpr_clock_type type) { + gpr_timespec result; + result.clock_type = type; + if (ns == INT64_MAX) { + result = gpr_inf_future(type); + } else if (ns == INT64_MIN) { + result = gpr_inf_past(type); + } else if (ns >= 0) { + result.tv_sec = ns / GPR_NS_PER_SEC; + result.tv_nsec = (int32_t)(ns - result.tv_sec * GPR_NS_PER_SEC); + } else { + /* Calculation carefully formulated to avoid any possible under/overflow. */ + result.tv_sec = (-(999999999 - (ns + GPR_NS_PER_SEC)) / GPR_NS_PER_SEC) - 1; + result.tv_nsec = (int32_t)(ns - result.tv_sec * GPR_NS_PER_SEC); + } + return result; +} + +gpr_timespec gpr_time_from_micros(int64_t us, gpr_clock_type type) { + gpr_timespec result; + result.clock_type = type; + if (us == INT64_MAX) { + result = gpr_inf_future(type); + } else if (us == INT64_MIN) { + result = gpr_inf_past(type); + } else if (us >= 0) { + result.tv_sec = us / 1000000; + result.tv_nsec = (int32_t)((us - result.tv_sec * 1000000) * 1000); + } else { + /* Calculation carefully formulated to avoid any possible under/overflow. */ + result.tv_sec = (-(999999 - (us + 1000000)) / 1000000) - 1; + result.tv_nsec = (int32_t)((us - result.tv_sec * 1000000) * 1000); + } + return result; +} + +gpr_timespec gpr_time_from_millis(int64_t ms, gpr_clock_type type) { + gpr_timespec result; + result.clock_type = type; + if (ms == INT64_MAX) { + result = gpr_inf_future(type); + } else if (ms == INT64_MIN) { + result = gpr_inf_past(type); + } else if (ms >= 0) { + result.tv_sec = ms / 1000; + result.tv_nsec = (int32_t)((ms - result.tv_sec * 1000) * 1000000); + } else { + /* Calculation carefully formulated to avoid any possible under/overflow. */ + result.tv_sec = (-(999 - (ms + 1000)) / 1000) - 1; + result.tv_nsec = (int32_t)((ms - result.tv_sec * 1000) * 1000000); + } + return result; +} + +gpr_timespec gpr_time_from_seconds(int64_t s, gpr_clock_type type) { + gpr_timespec result; + result.clock_type = type; + if (s == INT64_MAX) { + result = gpr_inf_future(type); + } else if (s == INT64_MIN) { + result = gpr_inf_past(type); + } else { + result.tv_sec = s; + result.tv_nsec = 0; + } + return result; +} + +gpr_timespec gpr_time_from_minutes(int64_t m, gpr_clock_type type) { + gpr_timespec result; + result.clock_type = type; + if (m >= INT64_MAX / 60) { + result = gpr_inf_future(type); + } else if (m <= INT64_MIN / 60) { + result = gpr_inf_past(type); + } else { + result.tv_sec = m * 60; + result.tv_nsec = 0; + } + return result; +} + +gpr_timespec gpr_time_from_hours(int64_t h, gpr_clock_type type) { + gpr_timespec result; + result.clock_type = type; + if (h >= INT64_MAX / 3600) { + result = gpr_inf_future(type); + } else if (h <= INT64_MIN / 3600) { + result = gpr_inf_past(type); + } else { + result.tv_sec = h * 3600; + result.tv_nsec = 0; + } + return result; +} + +gpr_timespec gpr_time_add(gpr_timespec a, gpr_timespec b) { + gpr_timespec sum; + int64_t inc = 0; + GPR_ASSERT(b.clock_type == GPR_TIMESPAN); + sum.clock_type = a.clock_type; + sum.tv_nsec = a.tv_nsec + b.tv_nsec; + if (sum.tv_nsec >= GPR_NS_PER_SEC) { + sum.tv_nsec -= GPR_NS_PER_SEC; + inc++; + } + if (a.tv_sec == INT64_MAX || a.tv_sec == INT64_MIN) { + sum = a; + } else if (b.tv_sec == INT64_MAX || + (b.tv_sec >= 0 && a.tv_sec >= INT64_MAX - b.tv_sec)) { + sum = gpr_inf_future(sum.clock_type); + } else if (b.tv_sec == INT64_MIN || + (b.tv_sec <= 0 && a.tv_sec <= INT64_MIN - b.tv_sec)) { + sum = gpr_inf_past(sum.clock_type); + } else { + sum.tv_sec = a.tv_sec + b.tv_sec; + if (inc != 0 && sum.tv_sec == INT64_MAX - 1) { + sum = gpr_inf_future(sum.clock_type); + } else { + sum.tv_sec += inc; + } + } + return sum; +} + +gpr_timespec gpr_time_sub(gpr_timespec a, gpr_timespec b) { + gpr_timespec diff; + int64_t dec = 0; + if (b.clock_type == GPR_TIMESPAN) { + diff.clock_type = a.clock_type; + } else { + GPR_ASSERT(a.clock_type == b.clock_type); + diff.clock_type = GPR_TIMESPAN; + } + diff.tv_nsec = a.tv_nsec - b.tv_nsec; + if (diff.tv_nsec < 0) { + diff.tv_nsec += GPR_NS_PER_SEC; + dec++; + } + if (a.tv_sec == INT64_MAX || a.tv_sec == INT64_MIN) { + diff = a; + } else if (b.tv_sec == INT64_MIN || + (b.tv_sec <= 0 && a.tv_sec >= INT64_MAX + b.tv_sec)) { + diff = gpr_inf_future(GPR_CLOCK_REALTIME); + } else if (b.tv_sec == INT64_MAX || + (b.tv_sec >= 0 && a.tv_sec <= INT64_MIN + b.tv_sec)) { + diff = gpr_inf_past(GPR_CLOCK_REALTIME); + } else { + diff.tv_sec = a.tv_sec - b.tv_sec; + if (dec != 0 && diff.tv_sec == INT64_MIN + 1) { + diff = gpr_inf_past(GPR_CLOCK_REALTIME); + } else { + diff.tv_sec -= dec; + } + } + return diff; +} + +int gpr_time_similar(gpr_timespec a, gpr_timespec b, gpr_timespec threshold) { + int cmp_ab; + + GPR_ASSERT(a.clock_type == b.clock_type); + GPR_ASSERT(threshold.clock_type == GPR_TIMESPAN); + + cmp_ab = gpr_time_cmp(a, b); + if (cmp_ab == 0) return 1; + if (cmp_ab < 0) { + return gpr_time_cmp(gpr_time_sub(b, a), threshold) <= 0; + } else { + return gpr_time_cmp(gpr_time_sub(a, b), threshold) <= 0; + } +} + +int32_t gpr_time_to_millis(gpr_timespec t) { + if (t.tv_sec >= 2147483) { + if (t.tv_sec == 2147483 && t.tv_nsec < 648 * GPR_NS_PER_MS) { + return 2147483 * GPR_MS_PER_SEC + t.tv_nsec / GPR_NS_PER_MS; + } + return 2147483647; + } else if (t.tv_sec <= -2147483) { + /* TODO(ctiller): correct handling here (it's so far in the past do we + care?) */ + return -2147483647; + } else { + return (int32_t)(t.tv_sec * GPR_MS_PER_SEC + t.tv_nsec / GPR_NS_PER_MS); + } +} + +double gpr_timespec_to_micros(gpr_timespec t) { + return (double)t.tv_sec * GPR_US_PER_SEC + t.tv_nsec * 1e-3; +} + +gpr_timespec gpr_convert_clock_type(gpr_timespec t, gpr_clock_type clock_type) { + if (t.clock_type == clock_type) { + return t; + } + + if (t.tv_nsec == 0) { + if (t.tv_sec == INT64_MAX) { + t.clock_type = clock_type; + return t; + } + if (t.tv_sec == INT64_MIN) { + t.clock_type = clock_type; + return t; + } + } + + if (clock_type == GPR_TIMESPAN) { + return gpr_time_sub(t, gpr_now(t.clock_type)); + } + + if (t.clock_type == GPR_TIMESPAN) { + return gpr_time_add(gpr_now(clock_type), t); + } + + return gpr_time_add(gpr_now(clock_type), + gpr_time_sub(t, gpr_now(t.clock_type))); +} diff --git a/src/core/lib/support/time_posix.c b/src/core/lib/support/time_posix.c new file mode 100644 index 0000000000..f5f62dadc6 --- /dev/null +++ b/src/core/lib/support/time_posix.c @@ -0,0 +1,170 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> +#include "src/core/lib/support/time_precise.h" + +#ifdef GPR_POSIX_TIME + +#include <stdlib.h> +#include <time.h> +#include <unistd.h> +#ifdef __linux__ +#include <sys/syscall.h> +#endif +#include <grpc/support/log.h> +#include <grpc/support/time.h> +#include "src/core/lib/support/block_annotate.h" + +static struct timespec timespec_from_gpr(gpr_timespec gts) { + struct timespec rv; + if (sizeof(time_t) < sizeof(int64_t)) { + /* fine to assert, as this is only used in gpr_sleep_until */ + GPR_ASSERT(gts.tv_sec <= INT32_MAX && gts.tv_sec >= INT32_MIN); + } + rv.tv_sec = (time_t)gts.tv_sec; + rv.tv_nsec = gts.tv_nsec; + return rv; +} + +#if _POSIX_TIMERS > 0 +static gpr_timespec gpr_from_timespec(struct timespec ts, + gpr_clock_type clock_type) { + /* + * timespec.tv_sec can have smaller size than gpr_timespec.tv_sec, + * but we are only using this function to implement gpr_now + * so there's no need to handle "infinity" values. + */ + gpr_timespec rv; + rv.tv_sec = ts.tv_sec; + rv.tv_nsec = (int32_t)ts.tv_nsec; + rv.clock_type = clock_type; + return rv; +} + +/** maps gpr_clock_type --> clockid_t for clock_gettime */ +static const clockid_t clockid_for_gpr_clock[] = {CLOCK_MONOTONIC, + CLOCK_REALTIME}; + +void gpr_time_init(void) { gpr_precise_clock_init(); } + +gpr_timespec gpr_now(gpr_clock_type clock_type) { + struct timespec now; + GPR_ASSERT(clock_type != GPR_TIMESPAN); + if (clock_type == GPR_CLOCK_PRECISE) { + gpr_timespec ret; + gpr_precise_clock_now(&ret); + return ret; + } else { +#if defined(GPR_BACKWARDS_COMPATIBILITY_MODE) && defined(__linux__) + /* avoid ABI problems by invoking syscalls directly */ + syscall(SYS_clock_gettime, clockid_for_gpr_clock[clock_type], &now); +#else + clock_gettime(clockid_for_gpr_clock[clock_type], &now); +#endif + return gpr_from_timespec(now, clock_type); + } +} +#else +/* For some reason Apple's OSes haven't implemented clock_gettime. */ + +#include <mach/mach.h> +#include <mach/mach_time.h> +#include <sys/time.h> + +static double g_time_scale; +static uint64_t g_time_start; + +void gpr_time_init(void) { + mach_timebase_info_data_t tb = {0, 1}; + gpr_precise_clock_init(); + mach_timebase_info(&tb); + g_time_scale = tb.numer; + g_time_scale /= tb.denom; + g_time_start = mach_absolute_time(); +} + +gpr_timespec gpr_now(gpr_clock_type clock) { + gpr_timespec now; + struct timeval now_tv; + double now_dbl; + + now.clock_type = clock; + switch (clock) { + case GPR_CLOCK_REALTIME: + gettimeofday(&now_tv, NULL); + now.tv_sec = now_tv.tv_sec; + now.tv_nsec = now_tv.tv_usec * 1000; + break; + case GPR_CLOCK_MONOTONIC: + now_dbl = (mach_absolute_time() - g_time_start) * g_time_scale; + now.tv_sec = (int64_t)(now_dbl * 1e-9); + now.tv_nsec = (int32_t)(now_dbl - ((double)now.tv_sec) * 1e9); + break; + case GPR_CLOCK_PRECISE: + gpr_precise_clock_now(&now); + break; + case GPR_TIMESPAN: + abort(); + } + + return now; +} +#endif + +void gpr_sleep_until(gpr_timespec until) { + gpr_timespec now; + gpr_timespec delta; + struct timespec delta_ts; + int ns_result; + + for (;;) { + /* We could simplify by using clock_nanosleep instead, but it might be + * slightly less portable. */ + now = gpr_now(until.clock_type); + if (gpr_time_cmp(until, now) <= 0) { + return; + } + + delta = gpr_time_sub(until, now); + delta_ts = timespec_from_gpr(delta); + GRPC_SCHEDULING_START_BLOCKING_REGION; + ns_result = nanosleep(&delta_ts, NULL); + GRPC_SCHEDULING_END_BLOCKING_REGION; + if (ns_result == 0) { + break; + } + } +} + +#endif /* GPR_POSIX_TIME */ diff --git a/src/core/lib/support/time_precise.c b/src/core/lib/support/time_precise.c new file mode 100644 index 0000000000..a2cf74bc84 --- /dev/null +++ b/src/core/lib/support/time_precise.c @@ -0,0 +1,89 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/log.h> +#include <grpc/support/time.h> +#include <stdio.h> + +#ifdef GRPC_TIMERS_RDTSC +#if defined(__i386__) +static void gpr_get_cycle_counter(long long int *clk) { + long long int ret; + __asm__ volatile("rdtsc" : "=A"(ret)); + *clk = ret; +} + +// ---------------------------------------------------------------- +#elif defined(__x86_64__) || defined(__amd64__) +static void gpr_get_cycle_counter(long long int *clk) { + unsigned long long low, high; + __asm__ volatile("rdtsc" : "=a"(low), "=d"(high)); + *clk = (long long)(high << 32) | (long long)low; +} +#endif + +static double cycles_per_second = 0; +static long long int start_cycle; +void gpr_precise_clock_init(void) { + time_t start; + long long end_cycle; + gpr_log(GPR_DEBUG, "Calibrating timers"); + start = time(NULL); + while (time(NULL) == start) + ; + gpr_get_cycle_counter(&start_cycle); + while (time(NULL) <= start + 10) + ; + gpr_get_cycle_counter(&end_cycle); + cycles_per_second = (double)(end_cycle - start_cycle) / 10.0; + gpr_log(GPR_DEBUG, "... cycles_per_second = %f\n", cycles_per_second); +} + +void gpr_precise_clock_now(gpr_timespec *clk) { + long long int counter; + double secs; + gpr_get_cycle_counter(&counter); + secs = (double)(counter - start_cycle) / cycles_per_second; + clk->clock_type = GPR_CLOCK_PRECISE; + clk->tv_sec = (int64_t)secs; + clk->tv_nsec = (int32_t)(1e9 * (secs - (double)clk->tv_sec)); +} + +#else /* GRPC_TIMERS_RDTSC */ +void gpr_precise_clock_init(void) {} + +void gpr_precise_clock_now(gpr_timespec *clk) { + *clk = gpr_now(GPR_CLOCK_REALTIME); + clk->clock_type = GPR_CLOCK_PRECISE; +} +#endif /* GRPC_TIMERS_RDTSC */ diff --git a/src/core/lib/support/time_precise.h b/src/core/lib/support/time_precise.h new file mode 100644 index 0000000000..30818d04b9 --- /dev/null +++ b/src/core/lib/support/time_precise.h @@ -0,0 +1,42 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H +#define GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H + +#include <grpc/support/time.h> + +void gpr_precise_clock_init(void); +void gpr_precise_clock_now(gpr_timespec *clk); + +#endif /* GRPC_CORE_LIB_SUPPORT_TIME_PRECISE_H */ diff --git a/src/core/lib/support/time_win32.c b/src/core/lib/support/time_win32.c new file mode 100644 index 0000000000..f7acbd14a6 --- /dev/null +++ b/src/core/lib/support/time_win32.c @@ -0,0 +1,110 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Win32 code for gpr time support. */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 + +#include <grpc/support/log.h> +#include <grpc/support/time.h> +#include <limits.h> +#include <process.h> +#include <sys/timeb.h> + +#include "src/core/lib/support/block_annotate.h" +#include "src/core/lib/support/time_precise.h" + +static LARGE_INTEGER g_start_time; +static double g_time_scale; + +void gpr_time_init(void) { + LARGE_INTEGER frequency; + QueryPerformanceFrequency(&frequency); + QueryPerformanceCounter(&g_start_time); + g_time_scale = 1.0 / (double)frequency.QuadPart; +} + +gpr_timespec gpr_now(gpr_clock_type clock) { + gpr_timespec now_tv; + LONGLONG diff; + struct _timeb now_tb; + LARGE_INTEGER timestamp; + double now_dbl; + now_tv.clock_type = clock; + switch (clock) { + case GPR_CLOCK_REALTIME: + _ftime_s(&now_tb); + now_tv.tv_sec = (int64_t)now_tb.time; + now_tv.tv_nsec = now_tb.millitm * 1000000; + break; + case GPR_CLOCK_MONOTONIC: + case GPR_CLOCK_PRECISE: + QueryPerformanceCounter(×tamp); + diff = timestamp.QuadPart - g_start_time.QuadPart; + now_dbl = (double)diff * g_time_scale; + now_tv.tv_sec = (int64_t)now_dbl; + now_tv.tv_nsec = (int32_t)((now_dbl - (double)now_tv.tv_sec) * 1e9); + break; + case GPR_TIMESPAN: + abort(); + break; + } + return now_tv; +} + +void gpr_sleep_until(gpr_timespec until) { + gpr_timespec now; + gpr_timespec delta; + int64_t sleep_millis; + + for (;;) { + /* We could simplify by using clock_nanosleep instead, but it might be + * slightly less portable. */ + now = gpr_now(until.clock_type); + if (gpr_time_cmp(until, now) <= 0) { + return; + } + + delta = gpr_time_sub(until, now); + sleep_millis = + delta.tv_sec * GPR_MS_PER_SEC + delta.tv_nsec / GPR_NS_PER_MS; + GPR_ASSERT((sleep_millis >= 0) && (sleep_millis <= INT_MAX)); + GRPC_SCHEDULING_START_BLOCKING_REGION; + Sleep((DWORD)sleep_millis); + GRPC_SCHEDULING_END_BLOCKING_REGION; + } +} + +#endif /* GPR_WIN32 */ diff --git a/src/core/lib/support/tls_pthread.c b/src/core/lib/support/tls_pthread.c new file mode 100644 index 0000000000..9683a6e547 --- /dev/null +++ b/src/core/lib/support/tls_pthread.c @@ -0,0 +1,45 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_PTHREAD_TLS + +#include <grpc/support/tls.h> + +intptr_t gpr_tls_set(struct gpr_pthread_thread_local *tls, intptr_t value) { + GPR_ASSERT(0 == pthread_setspecific(tls->key, (void *)value)); + return value; +} + +#endif /* GPR_PTHREAD_TLS */ diff --git a/src/core/lib/support/tmpfile.h b/src/core/lib/support/tmpfile.h new file mode 100644 index 0000000000..059142ab0f --- /dev/null +++ b/src/core/lib/support/tmpfile.h @@ -0,0 +1,55 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_TMPFILE_H +#define GRPC_CORE_LIB_SUPPORT_TMPFILE_H + +#include <stdio.h> + +#include <grpc/support/slice.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* Creates a temporary file from a prefix. + If tmp_filename is not NULL, *tmp_filename is assigned the name of the + created file and it is the responsibility of the caller to gpr_free it + unless an error occurs in which case it will be set to NULL. */ +FILE *gpr_tmpfile(const char *prefix, char **tmp_filename); + +#ifdef __cplusplus +} +#endif + +#endif /* GRPC_CORE_LIB_SUPPORT_TMPFILE_H */ diff --git a/src/core/lib/support/tmpfile_posix.c b/src/core/lib/support/tmpfile_posix.c new file mode 100644 index 0000000000..9e0e7ad808 --- /dev/null +++ b/src/core/lib/support/tmpfile_posix.c @@ -0,0 +1,85 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_POSIX_FILE + +#include "src/core/lib/support/tmpfile.h" + +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> + +#include "src/core/lib/support/string.h" + +FILE *gpr_tmpfile(const char *prefix, char **tmp_filename) { + FILE *result = NULL; + char *template; + int fd; + + if (tmp_filename != NULL) *tmp_filename = NULL; + + gpr_asprintf(&template, "/tmp/%s_XXXXXX", prefix); + GPR_ASSERT(template != NULL); + + fd = mkstemp(template); + if (fd == -1) { + gpr_log(GPR_ERROR, "mkstemp failed for template %s with error %s.", + template, strerror(errno)); + goto end; + } + result = fdopen(fd, "w+"); + if (result == NULL) { + gpr_log(GPR_ERROR, "Could not open file %s from fd %d (error = %s).", + template, fd, strerror(errno)); + unlink(template); + close(fd); + goto end; + } + +end: + if (result != NULL && tmp_filename != NULL) { + *tmp_filename = template; + } else { + gpr_free(template); + } + return result; +} + +#endif /* GPR_POSIX_FILE */ diff --git a/src/core/lib/support/tmpfile_win32.c b/src/core/lib/support/tmpfile_win32.c new file mode 100644 index 0000000000..0cb2904f8d --- /dev/null +++ b/src/core/lib/support/tmpfile_win32.c @@ -0,0 +1,84 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_WIN32 + +#include <io.h> +#include <stdio.h> +#include <string.h> +#include <tchar.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> + +#include "src/core/lib/support/string_win32.h" +#include "src/core/lib/support/tmpfile.h" + +FILE *gpr_tmpfile(const char *prefix, char **tmp_filename_out) { + FILE *result = NULL; + LPTSTR template_string = NULL; + TCHAR tmp_path[MAX_PATH]; + TCHAR tmp_filename[MAX_PATH]; + DWORD status; + UINT success; + + if (tmp_filename_out != NULL) *tmp_filename_out = NULL; + + /* Convert our prefix to TCHAR. */ + template_string = gpr_char_to_tchar(prefix); + GPR_ASSERT(template_string); + + /* Get the path to the best temporary folder available. */ + status = GetTempPath(MAX_PATH, tmp_path); + if (status == 0 || status > MAX_PATH) goto end; + + /* Generate a unique filename with our template + temporary path. */ + success = GetTempFileName(tmp_path, template_string, 0, tmp_filename); + if (!success) goto end; + + /* Open a file there. */ + if (_tfopen_s(&result, tmp_filename, TEXT("wb+")) != 0) goto end; + +end: + if (result && tmp_filename_out) { + *tmp_filename_out = gpr_tchar_to_char(tmp_filename); + } + + gpr_free(template_string); + return result; +} + +#endif /* GPR_WIN32 */ diff --git a/src/core/lib/support/wrap_memcpy.c b/src/core/lib/support/wrap_memcpy.c new file mode 100644 index 0000000000..15c289f7b8 --- /dev/null +++ b/src/core/lib/support/wrap_memcpy.c @@ -0,0 +1,53 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <string.h> + +/* Provide a wrapped memcpy for targets that need to be backwards + * compatible with older libc's. + * + * Enable by setting LDFLAGS=-Wl,-wrap,memcpy when linking. + */ + +#ifdef __linux__ +#ifdef __x86_64__ +__asm__(".symver memcpy,memcpy@GLIBC_2.2.5"); +void *__wrap_memcpy(void *destination, const void *source, size_t num) { + return memcpy(destination, source, num); +} +#else /* !__x86_64__ */ +void *__wrap_memcpy(void *destination, const void *source, size_t num) { + return memmove(destination, source, num); +} +#endif +#endif |