/usr/include/podofo/base/util/PdfMutexImpl_win32.h is in libpodofo-dev 0.9.4-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2008 by Dominik Seichter *
* domseichter@web.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* In addition, as a special exception, the copyright holders give *
* permission to link the code of portions of this program with the *
* OpenSSL library under certain conditions as described in each *
* individual source file, and distribute linked combinations *
* including the two. *
* You must obey the GNU General Public License in all respects *
* for all of the code used other than OpenSSL. If you modify *
* file(s) with this exception, you may extend this exception to your *
* version of the file(s), but you are not obligated to do so. If you *
* do not wish to do so, delete this exception statement from your *
* version. If you delete this exception statement from all source *
* files in the program, then also delete it here. *
***************************************************************************/
#include "../PdfDefines.h"
#include "../PdfDefinesPrivate.h"
#if ! defined(PODOFO_MULTI_THREAD)
#error "Not a multi-thread build. PdfMutex_null.h should be used instead"
#endif
#if !defined(_WIN32)
#error "Wrong PdfMutex implementation included!"
#endif
namespace PoDoFo {
namespace Util {
/**
* A platform independent reentrant mutex, win32 implementation.
*/
class PdfMutexImpl {
public:
/** Construct a new mutex
*/
inline PdfMutexImpl();
inline ~PdfMutexImpl();
/**
* Lock the mutex
*/
inline void Lock();
/**
* Try locking the mutex.
*
* \returns true if the mutex was locked
* \returns false if the mutex is already locked
* by some other thread
*/
inline bool TryLock();
/**
* Unlock the mutex
*/
inline void UnLock();
private:
CRITICAL_SECTION m_cs;
};
PdfMutexImpl::PdfMutexImpl()
{
// Visual Studio Code Analyzer warns that InitializeCriticalSection must be within try/catch block
// because InitializeCriticalSection can raise a STATUS_NO_MEMORY exception in low memory conditions
// on Windows XP / Server 2003. The exception was eliminated in Windows Vista / Server 2008,
// so don't warn if building for Vista or later.
#if ( WINVER >= _WIN32_WINNT_VISTA )
#pragma warning(disable : 28125)
#endif
InitializeCriticalSection( &m_cs );
#if ( WINVER >= _WIN32_WINNT_VISTA )
#pragma warning(default : 28125)
#endif
}
PdfMutexImpl::~PdfMutexImpl()
{
DeleteCriticalSection( &m_cs );
}
void PdfMutexImpl::Lock()
{
EnterCriticalSection( &m_cs );
}
bool PdfMutexImpl::TryLock()
{
return (TryEnterCriticalSection( &m_cs ) ? true : false);
}
void PdfMutexImpl::UnLock()
{
LeaveCriticalSection( &m_cs );
}
}; // Util
}; // PoDoFo
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