86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
#ifndef _sys_posix_Condition_h
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#define _sys_posix_Condition_h
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/*
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*
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*/
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#include "qpid/sys/posix/PrivatePosix.h"
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#include "qpid/sys/Mutex.h"
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#include "qpid/sys/Time.h"
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#include <time.h>
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#include <sys/errno.h>
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#include <boost/noncopyable.hpp>
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namespace qpid {
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namespace sys {
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/**
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* A condition variable for thread synchronization.
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*/
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class Condition
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{
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public:
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inline Condition();
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inline ~Condition();
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inline void wait(Mutex&);
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inline bool wait(Mutex&, const AbsTime& absoluteTime);
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inline void notify();
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inline void notifyAll();
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private:
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pthread_cond_t condition;
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};
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Condition::Condition() {
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QPID_POSIX_ASSERT_THROW_IF(pthread_cond_init(&condition, 0));
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}
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Condition::~Condition() {
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QPID_POSIX_ABORT_IF(pthread_cond_destroy(&condition));
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}
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void Condition::wait(Mutex& mutex) {
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QPID_POSIX_ASSERT_THROW_IF(pthread_cond_wait(&condition, &mutex.mutex));
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}
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bool Condition::wait(Mutex& mutex, const AbsTime& absoluteTime){
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struct timespec ts;
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toTimespec(ts, Duration(EPOCH, absoluteTime));
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int status = pthread_cond_timedwait(&condition, &mutex.mutex, &ts);
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if (status != 0) {
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if (status == ETIMEDOUT) return false;
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throw QPID_POSIX_ERROR(status);
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}
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return true;
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}
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void Condition::notify(){
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QPID_POSIX_ASSERT_THROW_IF(pthread_cond_signal(&condition));
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}
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void Condition::notifyAll(){
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QPID_POSIX_ASSERT_THROW_IF(pthread_cond_broadcast(&condition));
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}
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}}
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#endif /*!_sys_posix_Condition_h*/
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