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SqMod/vendor/POCO/Foundation/include/Poco/RWLock_VX.h
Sandu Liviu Catalin 4a6bfc086c Major plugin refactor and cleanup.
Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.
2021-01-30 08:51:39 +02:00

93 lines
1.4 KiB
C++

//
// RWLock_VX.h
//
// 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.
//
// SPDX-License-Identifier: BSL-1.0
//
#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