mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-13 10:32:57 +01:00
115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
//
|
|
// RWLock_VX.h
|
|
//
|
|
// $Id: //poco/1.4/Foundation/include/Poco/RWLock_VX.h#1 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Threading
|
|
// Module: RWLock
|
|
//
|
|
// Definition of the RWLockImpl class for POSIX Threads (VxWorks).
|
|
//
|
|
// Copyright (c) 2004-2011, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person or organization
|
|
// obtaining a copy of the software and accompanying documentation covered by
|
|
// this license (the "Software") to use, reproduce, display, distribute,
|
|
// execute, and transmit the Software, and to prepare derivative works of the
|
|
// Software, and to permit third-parties to whom the Software is furnished to
|
|
// do so, all subject to the following:
|
|
//
|
|
// The copyright notices in the Software and this entire statement, including
|
|
// the above license grant, this restriction and the following disclaimer,
|
|
// must be included in all copies of the Software, in whole or in part, and
|
|
// all derivative works of the Software, unless such copies or derivative
|
|
// works are solely in the form of machine-executable object code generated by
|
|
// a source language processor.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
|
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
|
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
|
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
|
|
#ifndef Foundation_RWLock_VX_INCLUDED
|
|
#define Foundation_RWLock_VX_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include "Poco/Exception.h"
|
|
#include <pthread.h>
|
|
#include <errno.h>
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class Foundation_API RWLockImpl
|
|
{
|
|
protected:
|
|
RWLockImpl();
|
|
~RWLockImpl();
|
|
void readLockImpl();
|
|
bool tryReadLockImpl();
|
|
void writeLockImpl();
|
|
bool tryWriteLockImpl();
|
|
void unlockImpl();
|
|
|
|
private:
|
|
pthread_mutex_t _mutex;
|
|
};
|
|
|
|
|
|
//
|
|
// inlines
|
|
//
|
|
inline void RWLockImpl::readLockImpl()
|
|
{
|
|
if (pthread_mutex_lock(&_mutex))
|
|
throw SystemException("cannot lock mutex");
|
|
}
|
|
|
|
|
|
inline bool RWLockImpl::tryReadLockImpl()
|
|
{
|
|
int rc = pthread_mutex_trylock(&_mutex);
|
|
if (rc == 0)
|
|
return true;
|
|
else if (rc == EBUSY)
|
|
return false;
|
|
else
|
|
throw SystemException("cannot lock mutex");
|
|
|
|
}
|
|
|
|
|
|
inline void RWLockImpl::writeLockImpl()
|
|
{
|
|
readLockImpl();
|
|
}
|
|
|
|
|
|
inline bool RWLockImpl::tryWriteLockImpl()
|
|
{
|
|
return tryReadLockImpl();
|
|
|
|
}
|
|
|
|
|
|
inline void RWLockImpl::unlockImpl()
|
|
{
|
|
if (pthread_mutex_unlock(&_mutex))
|
|
throw SystemException("cannot unlock mutex");
|
|
}
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_RWLock_VX_INCLUDED
|