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/*
*
* 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/iomgr/combiner.h"
#include "src/core/lib/iomgr/workqueue.h"
#include "src/core/lib/profiling/timers.h"
bool grpc_exec_ctx_ready_to_finish(grpc_exec_ctx *exec_ctx) {
if ((exec_ctx->flags & GRPC_EXEC_CTX_FLAG_IS_FINISHED) == 0) {
if (exec_ctx->check_ready_to_finish(exec_ctx,
exec_ctx->check_ready_to_finish_arg)) {
exec_ctx->flags |= GRPC_EXEC_CTX_FLAG_IS_FINISHED;
return true;
}
return false;
} else {
return true;
}
}
bool grpc_never_ready_to_finish(grpc_exec_ctx *exec_ctx, void *arg_ignored) {
return false;
}
bool grpc_always_ready_to_finish(grpc_exec_ctx *exec_ctx, void *arg_ignored) {
return true;
}
bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
bool did_something = 0;
GPR_TIMER_BEGIN("grpc_exec_ctx_flush", 0);
for (;;) {
if (!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) {
grpc_closure *next = c->next_data.next;
grpc_error *error = c->error_data.error;
did_something = true;
#ifndef NDEBUG
c->scheduled = false;
#endif
c->cb(exec_ctx, c->cb_arg, error);
GRPC_ERROR_UNREF(error);
c = next;
}
} else if (!grpc_combiner_continue_exec_ctx(exec_ctx)) {
break;
}
}
GPR_ASSERT(exec_ctx->active_combiner == NULL);
GPR_TIMER_END("grpc_exec_ctx_flush", 0);
return did_something;
}
void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx) {
exec_ctx->flags |= GRPC_EXEC_CTX_FLAG_IS_FINISHED;
grpc_exec_ctx_flush(exec_ctx);
}
static void exec_ctx_run(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
grpc_error *error) {
#ifndef NDEBUG
closure->scheduled = false;
#endif
closure->cb(exec_ctx, closure->cb_arg, error);
GRPC_ERROR_UNREF(error);
}
static void exec_ctx_sched(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
grpc_error *error) {
grpc_closure_list_append(&exec_ctx->closure_list, closure, error);
}
void grpc_exec_ctx_global_init(void) {}
void grpc_exec_ctx_global_shutdown(void) {}
static const grpc_closure_scheduler_vtable exec_ctx_scheduler_vtable = {
exec_ctx_run, exec_ctx_sched, "exec_ctx"};
static grpc_closure_scheduler exec_ctx_scheduler = {&exec_ctx_scheduler_vtable};
grpc_closure_scheduler *grpc_schedule_on_exec_ctx = &exec_ctx_scheduler;
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