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/*
*
* Copyright 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/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/timer.h"
#include <uv.h>
grpc_tracer_flag grpc_timer_trace = GRPC_TRACER_INITIALIZER(false);
grpc_tracer_flag grpc_timer_check_trace = GRPC_TRACER_INITIALIZER(false);
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;
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,
gpr_timespec deadline, grpc_closure *closure,
gpr_timespec now) {
uint64_t timeout;
uv_timer_t *uv_timer;
timer->closure = closure;
if (gpr_time_cmp(deadline, now) <= 0) {
timer->pending = 0;
grpc_closure_sched(exec_ctx, timer->closure, GRPC_ERROR_NONE);
return;
}
timer->pending = 1;
timeout = (uint64_t)gpr_time_to_millis(gpr_time_sub(deadline, now));
uv_timer = 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_cancel(grpc_exec_ctx *exec_ctx, grpc_timer *timer) {
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);
}
}
bool grpc_timer_check(grpc_exec_ctx *exec_ctx, gpr_timespec now,
gpr_timespec *next) {
return false;
}
void grpc_timer_list_init(gpr_timespec now) {}
void grpc_timer_list_shutdown(grpc_exec_ctx *exec_ctx) {}
void grpc_timer_consume_kick(void) {}
#endif /* GRPC_UV */
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