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