legacy-libs/grpc/deps/grpc/src/core/lib/iomgr/timer_uv.cc

   1 /*
   2  *
   3  * Copyright 2016 gRPC authors.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  */
  18
  19 #include <grpc/support/port_platform.h>
  20
  21 #include "src/core/lib/iomgr/port.h"
  22
  23 #ifdef GRPC_UV
  24
  25 #include <grpc/support/alloc.h>
  26 #include <grpc/support/log.h>
  27
  28 #include "src/core/lib/debug/trace.h"
  29 #include "src/core/lib/iomgr/iomgr_custom.h"
  30 #include "src/core/lib/iomgr/timer.h"
  31 #include "src/core/lib/iomgr/timer_custom.h"
  32
  33 #include <uv.h>
  34
  35 static void timer_close_callback(uv_handle_t* handle) { gpr_free(handle); }
  36
  37 static void stop_uv_timer(uv_timer_t* handle) {
  38   uv_timer_stop(handle);
  39   uv_unref((uv_handle_t*)handle);
  40   uv_close((uv_handle_t*)handle, timer_close_callback);
  41 }
  42
  43 void run_expired_timer(uv_timer_t* handle) {
  44   grpc_custom_timer* timer_wrapper = (grpc_custom_timer*)handle->data;
  45   grpc_custom_timer_callback(timer_wrapper, GRPC_ERROR_NONE);
  46 }
  47
  48 static void timer_start(grpc_custom_timer* t) {
  49   uv_timer_t* uv_timer;
  50   uv_timer = (uv_timer_t*)gpr_malloc(sizeof(uv_timer_t));
  51   uv_timer_init(uv_default_loop(), uv_timer);
  52   uv_timer->data = t;
  53   t->timer = (void*)uv_timer;
  54   uv_timer_start(uv_timer, run_expired_timer, t->timeout_ms, 0);
  55   // Node uses a garbage collector to call destructors, so we don't
  56   // want to hold the uv loop open with active gRPC objects.
  57   uv_unref((uv_handle_t*)uv_timer);
  58 }
  59
  60 static void timer_stop(grpc_custom_timer* t) {
  61   stop_uv_timer((uv_timer_t*)t->timer);
  62 }
  63
  64 grpc_custom_timer_vtable uv_timer_vtable = {timer_start, timer_stop};
  65
  66 #endif