| /* |
| * |
| * 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(gpr_timespec now) {} |
| void grpc_timer_list_shutdown(grpc_exec_ctx *exec_ctx) {} |
| |
| void grpc_timer_consume_kick(void) {} |
| |
| #endif /* GRPC_UV */ |