| /* |
| * |
| * 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/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) {} |
| |
| #endif /* GRPC_UV */ |