diff options
Diffstat (limited to 'src/core/lib/iomgr/exec_ctx.c')
| -rw-r--r-- | src/core/lib/iomgr/exec_ctx.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/exec_ctx.c b/src/core/lib/iomgr/exec_ctx.c new file mode 100644 index 0000000000..2146c7dd1f --- /dev/null +++ b/src/core/lib/iomgr/exec_ctx.c @@ -0,0 +1,151 @@ +/* + * + * 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/iomgr/exec_ctx.h" + +#include <grpc/support/log.h> +#include <grpc/support/sync.h> +#include <grpc/support/thd.h> + +#include "src/core/lib/profiling/timers.h" + +#ifndef GRPC_EXECUTION_CONTEXT_SANITIZER +bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) { + bool did_something = 0; + GPR_TIMER_BEGIN("grpc_exec_ctx_flush", 0); + while (!grpc_closure_list_empty(exec_ctx->closure_list)) { + grpc_closure *c = exec_ctx->closure_list.head; + exec_ctx->closure_list.head = exec_ctx->closure_list.tail = NULL; + while (c != NULL) { + bool success = (bool)(c->final_data & 1); + grpc_closure *next = (grpc_closure *)(c->final_data & ~(uintptr_t)1); + did_something = true; + GPR_TIMER_BEGIN("grpc_exec_ctx_flush.cb", 0); + c->cb(exec_ctx, c->cb_arg, success); + GPR_TIMER_END("grpc_exec_ctx_flush.cb", 0); + c = next; + } + } + GPR_TIMER_END("grpc_exec_ctx_flush", 0); + return did_something; +} + +void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx) { + grpc_exec_ctx_flush(exec_ctx); +} + +void grpc_exec_ctx_enqueue(grpc_exec_ctx *exec_ctx, grpc_closure *closure, + bool success, + grpc_workqueue *offload_target_or_null) { + GPR_ASSERT(offload_target_or_null == NULL); + grpc_closure_list_add(&exec_ctx->closure_list, closure, success); +} + +void grpc_exec_ctx_enqueue_list(grpc_exec_ctx *exec_ctx, + grpc_closure_list *list, + grpc_workqueue *offload_target_or_null) { + GPR_ASSERT(offload_target_or_null == NULL); + grpc_closure_list_move(list, &exec_ctx->closure_list); +} + +void grpc_exec_ctx_global_init(void) {} +void grpc_exec_ctx_global_shutdown(void) {} +#else +static gpr_mu g_mu; +static gpr_cv g_cv; +static int g_threads = 0; + +static void run_closure(void *arg) { + grpc_closure *closure = arg; + grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; + closure->cb(&exec_ctx, closure->cb_arg, (closure->final_data & 1) != 0); + grpc_exec_ctx_finish(&exec_ctx); + gpr_mu_lock(&g_mu); + if (--g_threads == 0) { + gpr_cv_signal(&g_cv); + } + gpr_mu_unlock(&g_mu); +} + +static void start_closure(grpc_closure *closure) { + gpr_thd_id id; + gpr_mu_lock(&g_mu); + g_threads++; + gpr_mu_unlock(&g_mu); + gpr_thd_new(&id, run_closure, closure, NULL); +} + +bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) { return false; } + +void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx) {} + +void grpc_exec_ctx_enqueue(grpc_exec_ctx *exec_ctx, grpc_closure *closure, + bool success, + grpc_workqueue *offload_target_or_null) { + GPR_ASSERT(offload_target_or_null == NULL); + if (closure == NULL) return; + closure->final_data = success; + start_closure(closure); +} + +void grpc_exec_ctx_enqueue_list(grpc_exec_ctx *exec_ctx, + grpc_closure_list *list, + grpc_workqueue *offload_target_or_null) { + GPR_ASSERT(offload_target_or_null == NULL); + if (list == NULL) return; + grpc_closure *p = list->head; + while (p) { + grpc_closure *start = p; + p = grpc_closure_next(start); + start_closure(start); + } + grpc_closure_list r = GRPC_CLOSURE_LIST_INIT; + *list = r; +} + +void grpc_exec_ctx_global_init(void) { + gpr_mu_init(&g_mu); + gpr_cv_init(&g_cv); +} + +void grpc_exec_ctx_global_shutdown(void) { + gpr_mu_lock(&g_mu); + while (g_threads != 0) { + gpr_cv_wait(&g_cv, &g_mu, gpr_inf_future(GPR_CLOCK_REALTIME)); + } + gpr_mu_unlock(&g_mu); + + gpr_mu_destroy(&g_mu); + gpr_cv_destroy(&g_cv); +} +#endif |