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58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
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// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/synchronization/semaphore.h"
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#include <errno.h>
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#include <cmath>
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#include "base/logging.h"
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#include "base/posix/eintr_wrapper.h"
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namespace crashpad {
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#if !defined(OS_MACOSX)
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Semaphore::Semaphore(int value) {
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PCHECK(sem_init(&semaphore_, 0, value) == 0) << "sem_init";
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}
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Semaphore::~Semaphore() {
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PCHECK(sem_destroy(&semaphore_) == 0) << "sem_destroy";
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}
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void Semaphore::Wait() {
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PCHECK(HANDLE_EINTR(sem_wait(&semaphore_)) == 0) << "sem_wait";
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}
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bool Semaphore::TimedWait(double seconds) {
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DCHECK_GE(seconds, 0.0);
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timespec timeout;
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timeout.tv_sec = seconds;
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timeout.tv_nsec = (seconds - trunc(seconds)) * 1E9;
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int rv = HANDLE_EINTR(sem_timedwait(&semaphore_, &timeout));
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PCHECK(rv == 0 || errno == ETIMEDOUT) << "sem_timedwait";
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return rv == 0;
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}
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void Semaphore::Signal() {
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PCHECK(sem_post(&semaphore_) == 0) << "sem_post";
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}
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#endif
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} // namespace crashpad
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