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/*
*
* Copyright 2016 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/port.h"
#if GRPC_UV
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "src/core/lib/debug/trace.h"
#include "src/core/lib/iomgr/iomgr_uv.h"
#include "src/core/lib/iomgr/timer.h"
#include <uv.h>
extern "C" {
grpc_tracer_flag grpc_timer_trace = GRPC_TRACER_INITIALIZER(false, "timer");
grpc_tracer_flag grpc_timer_check_trace =
GRPC_TRACER_INITIALIZER(false, "timer_check");
}
static void timer_close_callback(uv_handle_t *handle) { gpr_free(handle); }
static void stop_uv_timer(uv_timer_t *handle) {
uv_timer_stop(handle);
uv_unref((uv_handle_t *)handle);
uv_close((uv_handle_t *)handle, timer_close_callback);
}
void run_expired_timer(uv_timer_t *handle) {
grpc_timer *timer = (grpc_timer *)handle->data;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
GRPC_UV_ASSERT_SAME_THREAD();
GPR_ASSERT(timer->pending);
timer->pending = 0;
GRPC_CLOSURE_SCHED(&exec_ctx, timer->closure, GRPC_ERROR_NONE);
stop_uv_timer(handle);
grpc_exec_ctx_finish(&exec_ctx);
}
void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
grpc_millis deadline, grpc_closure *closure) {
uint64_t timeout;
uv_timer_t *uv_timer;
GRPC_UV_ASSERT_SAME_THREAD();
timer->closure = closure;
if (deadline <= grpc_exec_ctx_now(exec_ctx)) {
timer->pending = 0;
GRPC_CLOSURE_SCHED(exec_ctx, timer->closure, GRPC_ERROR_NONE);
return;
}
timer->pending = 1;
timeout = (uint64_t)(deadline - grpc_exec_ctx_now(exec_ctx));
uv_timer = (uv_timer_t *)gpr_malloc(sizeof(uv_timer_t));
uv_timer_init(uv_default_loop(), uv_timer);
uv_timer->data = timer;
timer->uv_timer = uv_timer;
uv_timer_start(uv_timer, run_expired_timer, timeout, 0);
/* We assume that gRPC timers are only used alongside other active gRPC
objects, and that there will therefore always be something else keeping
the uv loop alive whenever there is a timer */
uv_unref((uv_handle_t *)uv_timer);
}
void grpc_timer_init_unset(grpc_timer *timer) { timer->pending = 0; }
void grpc_timer_cancel(grpc_exec_ctx *exec_ctx, grpc_timer *timer) {
GRPC_UV_ASSERT_SAME_THREAD();
if (timer->pending) {
timer->pending = 0;
GRPC_CLOSURE_SCHED(exec_ctx, timer->closure, GRPC_ERROR_CANCELLED);
stop_uv_timer((uv_timer_t *)timer->uv_timer);
}
}
grpc_timer_check_result grpc_timer_check(grpc_exec_ctx *exec_ctx,
grpc_millis *next) {
return GRPC_TIMERS_NOT_CHECKED;
}
void grpc_timer_list_init(grpc_exec_ctx *exec_ctx) {}
void grpc_timer_list_shutdown(grpc_exec_ctx *exec_ctx) {}
void grpc_timer_consume_kick(void) {}
#endif /* GRPC_UV */
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