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/*
*
* Copyright 2015-2016, 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/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
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