| /* |
| * |
| * Copyright 2015, 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 <grpc/grpc.h> |
| #include <grpc/support/alloc.h> |
| #include "src/core/lib/iomgr/timer.h" |
| #include "src/core/lib/surface/completion_queue.h" |
| |
| struct grpc_alarm { |
| grpc_timer alarm; |
| grpc_cq_completion completion; |
| /** completion queue where events about this alarm will be posted */ |
| grpc_completion_queue *cq; |
| /** user supplied tag */ |
| void *tag; |
| }; |
| |
| static void do_nothing_end_completion(grpc_exec_ctx *exec_ctx, void *arg, |
| grpc_cq_completion *c) {} |
| |
| static void alarm_cb(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) { |
| grpc_alarm *alarm = arg; |
| grpc_cq_end_op(exec_ctx, alarm->cq, alarm->tag, error, |
| do_nothing_end_completion, NULL, &alarm->completion); |
| } |
| |
| grpc_alarm *grpc_alarm_create(grpc_completion_queue *cq, gpr_timespec deadline, |
| void *tag) { |
| grpc_alarm *alarm = gpr_malloc(sizeof(grpc_alarm)); |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| |
| GRPC_CQ_INTERNAL_REF(cq, "alarm"); |
| alarm->cq = cq; |
| alarm->tag = tag; |
| |
| grpc_cq_begin_op(cq, tag); |
| grpc_timer_init(&exec_ctx, &alarm->alarm, |
| gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC), |
| alarm_cb, alarm, gpr_now(GPR_CLOCK_MONOTONIC)); |
| grpc_exec_ctx_finish(&exec_ctx); |
| return alarm; |
| } |
| |
| void grpc_alarm_cancel(grpc_alarm *alarm) { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_timer_cancel(&exec_ctx, &alarm->alarm); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| void grpc_alarm_destroy(grpc_alarm *alarm) { |
| grpc_alarm_cancel(alarm); |
| GRPC_CQ_INTERNAL_UNREF(alarm->cq, "alarm"); |
| gpr_free(alarm); |
| } |