Add Semaphore::TimedWait()

util/synchronization/semaphore.cc

-// Copyright 2014 The Crashpad Authors. All rights reserved.
-//
-// 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 "util/synchronization/semaphore.h"
-
-#include <limits>
-
-#include "base/logging.h"
-#include "base/posix/eintr_wrapper.h"
-
-namespace crashpad {
-
-#if defined(OS_MACOSX)
-
-Semaphore::Semaphore(int value)
-    : semaphore_(dispatch_semaphore_create(value)) {
-  CHECK(semaphore_) << "dispatch_semaphore_create";
-}
-
-Semaphore::~Semaphore() {
-  dispatch_release(semaphore_);
-}
-
-void Semaphore::Wait() {
-  CHECK_EQ(dispatch_semaphore_wait(semaphore_, DISPATCH_TIME_FOREVER), 0);
-}
-
-void Semaphore::Signal() {
-  dispatch_semaphore_signal(semaphore_);
-}
-
-#elif defined(OS_WIN)
-
-Semaphore::Semaphore(int value)
-    : semaphore_(CreateSemaphore(nullptr,
-                                 value,
-                                 std::numeric_limits<LONG>::max(),
-                                 nullptr)) {
-  PCHECK(semaphore_) << "CreateSemaphore";
-}
-
-Semaphore::~Semaphore() {
-  PCHECK(CloseHandle(semaphore_));
-}
-
-void Semaphore::Wait() {
-  PCHECK(WaitForSingleObject(semaphore_, INFINITE) == WAIT_OBJECT_0);
-}
-
-void Semaphore::Signal() {
-  PCHECK(ReleaseSemaphore(semaphore_, 1, nullptr));
-}
-
-#else
-
-Semaphore::Semaphore(int value) {
-  PCHECK(sem_init(&semaphore_, 0, value) == 0) << "sem_init";
-}
-
-Semaphore::~Semaphore() {
-  PCHECK(sem_destroy(&semaphore_)) << "sem_destroy";
-}
-
-void Semaphore::Wait() {
-  PCHECK(HANDLE_EINTR(sem_wait(&semaphore_))) << "sem_wait";
-}
-
-void Semaphore::Signal() {
-  PCHECK(sem_post(&semaphore_)) << "sem_post";
-}
-
-#endif
-
-}  // namespace crashpad