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86 lines
1.9 KiB
86 lines
1.9 KiB
/* Copyright (c) 2016 Baidu, Inc. All Rights Reserve.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 "paddle/utils/Locks.h"
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#include <semaphore.h>
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#include <unistd.h>
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namespace paddle {
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class SemaphorePrivate {
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public:
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sem_t sem;
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};
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Semaphore::Semaphore(int initValue): m(new SemaphorePrivate()) {
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sem_init(&m->sem, 0, initValue);
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}
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Semaphore::~Semaphore() {
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sem_destroy(&m->sem);
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}
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bool Semaphore::timeWait(struct timespec* ts) {
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return (0 == sem_timedwait(&m->sem, ts));
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}
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void Semaphore::wait() {
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sem_wait(&m->sem);
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}
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void Semaphore::post() {
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sem_post(&m->sem);
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}
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class SpinLockPrivate {
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public:
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inline SpinLockPrivate() { pthread_spin_init(&lock_, 0); }
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inline ~SpinLockPrivate() { pthread_spin_destroy(&lock_); }
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pthread_spinlock_t lock_;
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char padding_[64 - sizeof(pthread_spinlock_t)];
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};
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SpinLock::SpinLock():m(new SpinLockPrivate()) {}
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SpinLock::~SpinLock() { delete m; }
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void SpinLock::lock() {
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pthread_spin_lock(&m->lock_);
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}
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void SpinLock::unlock() {
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pthread_spin_unlock(&m->lock_);
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}
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class ThreadBarrierPrivate {
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public:
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pthread_barrier_t barrier_;
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};
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ThreadBarrier::ThreadBarrier(int count): m(new ThreadBarrierPrivate()) {
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pthread_barrier_init(&m->barrier_, nullptr, count);
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}
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ThreadBarrier::~ThreadBarrier() {
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pthread_barrier_destroy(&m->barrier_);
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delete m;
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}
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void ThreadBarrier::wait() {
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pthread_barrier_wait(&m->barrier_);
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}
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} // namespace paddle
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