diff options
Diffstat (limited to 'src/core/lib/iomgr/closure.cc')
| -rw-r--r-- | src/core/lib/iomgr/closure.cc | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/closure.cc b/src/core/lib/iomgr/closure.cc new file mode 100644 index 0000000000..00edefc6ae --- /dev/null +++ b/src/core/lib/iomgr/closure.cc @@ -0,0 +1,219 @@ +/* + * + * Copyright 2015 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +#include "src/core/lib/iomgr/closure.h" + +#include <assert.h> +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> + +#include "src/core/lib/profiling/timers.h" + +#ifndef NDEBUG +grpc_tracer_flag grpc_trace_closure = GRPC_TRACER_INITIALIZER(false, "closure"); +#endif + +#ifndef NDEBUG +grpc_closure *grpc_closure_init(const char *file, int line, + grpc_closure *closure, grpc_iomgr_cb_func cb, + void *cb_arg, + grpc_closure_scheduler *scheduler) { +#else +grpc_closure *grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb, + void *cb_arg, + grpc_closure_scheduler *scheduler) { +#endif + closure->cb = cb; + closure->cb_arg = cb_arg; + closure->scheduler = scheduler; +#ifndef NDEBUG + closure->scheduled = false; + closure->file_initiated = NULL; + closure->line_initiated = 0; + closure->run = false; + closure->file_created = file; + closure->line_created = line; +#endif + return closure; +} + +void grpc_closure_list_init(grpc_closure_list *closure_list) { + closure_list->head = closure_list->tail = NULL; +} + +bool grpc_closure_list_append(grpc_closure_list *closure_list, + grpc_closure *closure, grpc_error *error) { + if (closure == NULL) { + GRPC_ERROR_UNREF(error); + return false; + } + closure->error_data.error = error; + closure->next_data.next = NULL; + bool was_empty = (closure_list->head == NULL); + if (was_empty) { + closure_list->head = closure; + } else { + closure_list->tail->next_data.next = closure; + } + closure_list->tail = closure; + return was_empty; +} + +void grpc_closure_list_fail_all(grpc_closure_list *list, + grpc_error *forced_failure) { + for (grpc_closure *c = list->head; c != NULL; c = c->next_data.next) { + if (c->error_data.error == GRPC_ERROR_NONE) { + c->error_data.error = GRPC_ERROR_REF(forced_failure); + } + } + GRPC_ERROR_UNREF(forced_failure); +} + +bool grpc_closure_list_empty(grpc_closure_list closure_list) { + return closure_list.head == NULL; +} + +void grpc_closure_list_move(grpc_closure_list *src, grpc_closure_list *dst) { + if (src->head == NULL) { + return; + } + if (dst->head == NULL) { + *dst = *src; + } else { + dst->tail->next_data.next = src->head; + dst->tail = src->tail; + } + src->head = src->tail = NULL; +} + +typedef struct { + grpc_iomgr_cb_func cb; + void *cb_arg; + grpc_closure wrapper; +} wrapped_closure; + +static void closure_wrapper(grpc_exec_ctx *exec_ctx, void *arg, + grpc_error *error) { + wrapped_closure *wc = (wrapped_closure *)arg; + grpc_iomgr_cb_func cb = wc->cb; + void *cb_arg = wc->cb_arg; + gpr_free(wc); + cb(exec_ctx, cb_arg, error); +} + +#ifndef NDEBUG +grpc_closure *grpc_closure_create(const char *file, int line, + grpc_iomgr_cb_func cb, void *cb_arg, + grpc_closure_scheduler *scheduler) { +#else +grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg, + grpc_closure_scheduler *scheduler) { +#endif + wrapped_closure *wc = (wrapped_closure *)gpr_malloc(sizeof(*wc)); + wc->cb = cb; + wc->cb_arg = cb_arg; +#ifndef NDEBUG + grpc_closure_init(file, line, &wc->wrapper, closure_wrapper, wc, scheduler); +#else + grpc_closure_init(&wc->wrapper, closure_wrapper, wc, scheduler); +#endif + return &wc->wrapper; +} + +#ifndef NDEBUG +void grpc_closure_run(const char *file, int line, grpc_exec_ctx *exec_ctx, + grpc_closure *c, grpc_error *error) { +#else +void grpc_closure_run(grpc_exec_ctx *exec_ctx, grpc_closure *c, + grpc_error *error) { +#endif + GPR_TIMER_BEGIN("grpc_closure_run", 0); + if (c != NULL) { +#ifndef NDEBUG + c->file_initiated = file; + c->line_initiated = line; + c->run = true; +#endif + assert(c->cb); + c->scheduler->vtable->run(exec_ctx, c, error); + } else { + GRPC_ERROR_UNREF(error); + } + GPR_TIMER_END("grpc_closure_run", 0); +} + +#ifndef NDEBUG +void grpc_closure_sched(const char *file, int line, grpc_exec_ctx *exec_ctx, + grpc_closure *c, grpc_error *error) { +#else +void grpc_closure_sched(grpc_exec_ctx *exec_ctx, grpc_closure *c, + grpc_error *error) { +#endif + GPR_TIMER_BEGIN("grpc_closure_sched", 0); + if (c != NULL) { +#ifndef NDEBUG + if (c->scheduled) { + gpr_log(GPR_ERROR, + "Closure already scheduled. (closure: %p, created: [%s:%d], " + "previously scheduled at: [%s: %d] run?: %s", + c, c->file_created, c->line_created, c->file_initiated, + c->line_initiated, c->run ? "true" : "false"); + abort(); + } + c->scheduled = true; + c->file_initiated = file; + c->line_initiated = line; + c->run = false; +#endif + assert(c->cb); + c->scheduler->vtable->sched(exec_ctx, c, error); + } else { + GRPC_ERROR_UNREF(error); + } + GPR_TIMER_END("grpc_closure_sched", 0); +} + +#ifndef NDEBUG +void grpc_closure_list_sched(const char *file, int line, + grpc_exec_ctx *exec_ctx, grpc_closure_list *list) { +#else +void grpc_closure_list_sched(grpc_exec_ctx *exec_ctx, grpc_closure_list *list) { +#endif + grpc_closure *c = list->head; + while (c != NULL) { + grpc_closure *next = c->next_data.next; +#ifndef NDEBUG + if (c->scheduled) { + gpr_log(GPR_ERROR, + "Closure already scheduled. (closure: %p, created: [%s:%d], " + "previously scheduled at: [%s: %d] run?: %s", + c, c->file_created, c->line_created, c->file_initiated, + c->line_initiated, c->run ? "true" : "false"); + abort(); + } + c->scheduled = true; + c->file_initiated = file; + c->line_initiated = line; + c->run = false; +#endif + assert(c->cb); + c->scheduler->vtable->sched(exec_ctx, c, c->error_data.error); + c = next; + } + list->head = list->tail = NULL; +} |