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//
// Event_POSIX.h
//
// Library: Foundation
// Package: Threading
// Module: Event
//
// Definition of the EventImpl class for POSIX Threads.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_Event_POSIX_INCLUDED
#define Foundation_Event_POSIX_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/Exception.h"
#include <pthread.h>
#include <errno.h>
#include <atomic>
namespace Poco {
class Foundation_API EventImpl
{
protected:
EventImpl(bool autoReset);
~EventImpl();
void setImpl();
void waitImpl();
bool waitImpl(long milliseconds);
void resetImpl();
private:
std::atomic<bool> _auto;
std::atomic<bool> _state;
pthread_mutex_t _mutex;
pthread_cond_t _cond;
};
//
// inlines
//
inline void EventImpl::setImpl()
{
if (pthread_mutex_lock(&_mutex))
throw SystemException("cannot signal event (lock)");
_state = true;
if (pthread_cond_broadcast(&_cond))
{
pthread_mutex_unlock(&_mutex);
throw SystemException("cannot signal event");
}
pthread_mutex_unlock(&_mutex);
}
inline void EventImpl::resetImpl()
{
if (pthread_mutex_lock(&_mutex))
throw SystemException("cannot reset event");
_state = false;
pthread_mutex_unlock(&_mutex);
}
} // namespace Poco
#endif // Foundation_Event_POSIX_INCLUDED
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