| /* |
| * |
| * 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> |
| |
| grpc_core::TraceFlag grpc_timer_trace(false, "timer"); |
| grpc_core::TraceFlag grpc_timer_check_trace(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 */ |