/usr/include/dcmtk/oflog/helpers/syncprims.h is in libdcmtk2-dev 3.6.0-15.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// Redistribution and use in source and binary forms, with or without modifica-
// tion, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
// DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef LOG4CPLUS_THREAD_SYNCPRIMS_H
#define LOG4CPLUS_THREAD_SYNCPRIMS_H
//#include <stdexcept>
#include "dcmtk/oflog/config.h"
#if defined (LOG4CPLUS_USE_PTHREADS)
# define INCLUDE_CERRNO
# include "dcmtk/ofstd/ofstdinc.h"
# include <pthread.h>
# include <semaphore.h>
# include "dcmtk/oflog/helpers/timehelp.h"
#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
# undef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
namespace log4cplus { namespace thread {
namespace detail
{
LOG4CPLUS_EXPORT void syncprims_throw_exception (char const * const msg,
char const * const file, int line);
} // namespace detail
template <typename SP>
class SyncGuard
{
public:
SyncGuard (SP const &);
~SyncGuard ();
void lock ();
void unlock ();
void attach (SP const &);
void detach ();
private:
SP const * sp;
SyncGuard (SyncGuard const &);
SyncGuard & operator = (SyncGuard const &);
};
class ManualResetEvent;
class Mutex
{
public:
Mutex ();
~Mutex ();
void lock () const;
void unlock () const;
private:
#if defined (LOG4CPLUS_USE_PTHREADS)
mutable pthread_mutex_t mtx;
friend class ManualResetEvent;
#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
mutable CRITICAL_SECTION cs;
#endif
Mutex (Mutex const &);
Mutex & operator = (Mutex &);
};
typedef SyncGuard<Mutex> MutexGuard;
class Semaphore
{
public:
Semaphore (unsigned max, unsigned initial);
~Semaphore ();
void lock () const;
void unlock () const;
private:
#if defined (LOG4CPLUS_USE_PTHREADS)
mutable sem_t sem;
#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
HANDLE sem;
#endif
Semaphore (Semaphore const &);
Semaphore & operator = (Semaphore const &);
};
typedef SyncGuard<Semaphore> SemaphoreGuard;
class ManualResetEvent
{
public:
ManualResetEvent (bool = false);
~ManualResetEvent ();
void signal () const;
void wait () const;
bool timed_wait (unsigned long msec) const;
void reset () const;
private:
#if defined (LOG4CPLUS_USE_PTHREADS)
mutable pthread_cond_t cv;
mutable Mutex mtx;
mutable volatile unsigned sigcount;
mutable volatile bool signaled;
#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
HANDLE ev;
#endif
ManualResetEvent (ManualResetEvent const &);
ManualResetEvent & operator = (ManualResetEvent const &);
};
} } // namespace log4cplus { namespace thread {
// Include the appropriate implementations of the classes declared
// above.
#if defined (LOG4CPLUS_USE_PTHREADS)
# include "dcmtk/oflog/helpers/syncppth.h"
#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
# include "dcmtk/oflog/helpers/syncpwin.h"
#endif
namespace log4cplus { namespace thread {
//
//
//
template <typename SP>
inline
SyncGuard<SP>::SyncGuard (SP const & m)
: sp (&m)
{
sp->lock ();
}
template <typename SP>
inline
SyncGuard<SP>::~SyncGuard ()
{
if (sp)
sp->unlock ();
}
template <typename SP>
inline
void
SyncGuard<SP>::lock ()
{
sp->lock ();
}
template <typename SP>
inline
void
SyncGuard<SP>::unlock ()
{
sp->unlock ();
}
template <typename SP>
inline
void
SyncGuard<SP>::attach (SP const & m)
{
sp = &m;
}
template <typename SP>
inline
void
SyncGuard<SP>::detach ()
{
sp = 0;
}
} } // namespace log4cplus { namespace thread {
#endif // LOG4CPLUS_THREAD_SYNCPRIMS_H
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