--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file mutex.cpp
+** \brief Template File
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package 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.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "mutex.h"
+
+#ifdef HAVE_LIBPTHREAD
+#define USING_PTHREADS 1
+#else
+#ifdef _WIN32
+#define USING_WIN32_THREADS 1
+#endif
+#endif
+
+#ifdef USING_WIN32_THREADS
+#include <windows.h>
+#endif
+
+#ifdef USING_PTHREADS
+#include <pthread.h>
+#endif
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+//using namespace std;
+//using namespace etl;
+using namespace synfig;
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+
+
+
+
+
+bool
+Mutex::is_locked()
+{
+ if(try_lock())
+ {
+ unlock();
+ return false;
+ }
+ return true;
+}
+
+void
+RecMutex::unlock_all()
+{
+ while(is_locked()) unlock();
+}
+
+#ifdef USING_PTHREADS
+Mutex::Mutex()
+{
+ pthread_mutex_t*const mtx_ptr(new pthread_mutex_t);
+
+ pthread_mutexattr_t attr;
+ pthread_mutexattr_init(&attr);
+
+ //#ifdef PTHREAD_PRIO_INHERIT
+ //pthread_mutexattr_setprioceiling(&attr,PTHREAD_PRIO_INHERIT);
+ //#endif
+
+ //#ifdef PTHREAD_MUTEX_RECURSIVE
+ //pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
+ //#endif
+
+ pthread_mutex_init(mtx_ptr,&attr);
+ pthread_mutexattr_destroy(&attr);
+
+ blackbox=mtx_ptr;
+}
+
+Mutex::~Mutex()
+{
+ pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+ pthread_mutex_destroy(mtx_ptr);
+ delete mtx_ptr;
+}
+
+void
+Mutex::lock()
+{
+ pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+ pthread_mutex_lock(mtx_ptr);
+}
+
+void
+Mutex::unlock()
+{
+ pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+ pthread_mutex_unlock(mtx_ptr);
+}
+
+bool
+Mutex::try_lock()
+{
+ pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+ return !(bool) pthread_mutex_trylock(mtx_ptr);
+}
+
+
+RecMutex::RecMutex()
+{
+ pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+ pthread_mutexattr_t attr;
+
+ // Backtrack and get rid of the non-recursive mutex
+ pthread_mutex_destroy(mtx_ptr);
+
+ pthread_mutexattr_init(&attr);
+
+ pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
+
+ pthread_mutex_init(mtx_ptr,&attr);
+ pthread_mutexattr_destroy(&attr);
+}
+
+
+
+RWLock::RWLock()
+{
+ pthread_rwlock_t*const rwlock_ptr(new pthread_rwlock_t);
+
+ pthread_rwlock_init(rwlock_ptr, NULL);
+
+ blackbox=rwlock_ptr;
+}
+
+RWLock::~RWLock()
+{
+ pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+ pthread_rwlock_destroy(rwlock_ptr);
+
+ delete rwlock_ptr;
+}
+
+void
+RWLock::reader_lock()
+{
+ pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+ pthread_rwlock_rdlock(rwlock_ptr);
+}
+
+void
+RWLock::reader_unlock()
+{
+ pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+ pthread_rwlock_unlock(rwlock_ptr);
+}
+
+bool
+RWLock::reader_trylock()
+{
+ pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+ return !pthread_rwlock_tryrdlock(rwlock_ptr);
+}
+
+void
+RWLock::writer_lock()
+{
+ pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+ pthread_rwlock_wrlock(rwlock_ptr);
+}
+
+void
+RWLock::writer_unlock()
+{
+ pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+ pthread_rwlock_unlock(rwlock_ptr);
+}
+
+bool
+RWLock::writer_trylock()
+{
+ pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+ return !pthread_rwlock_trywrlock(rwlock_ptr);
+}
+
+#endif
+
+#ifdef USING_WIN32_THREADS
+Mutex::Mutex()
+{
+ HANDLE& mtx(*reinterpret_cast<HANDLE*>(&blackbox));
+ mtx=CreateMutex(NULL, FALSE, NULL);
+}
+
+Mutex::~Mutex()
+{
+ HANDLE mtx(reinterpret_cast<HANDLE>(blackbox));
+ CloseHandle(mtx);
+}
+
+void
+Mutex::lock()
+{
+ HANDLE mtx(reinterpret_cast<HANDLE>(blackbox));
+ WaitForSingleObject(mtx, INFINITE);
+}
+
+void
+Mutex::unlock()
+{
+ HANDLE mtx(reinterpret_cast<HANDLE>(blackbox));
+ ReleaseMutex(mtx);
+}
+
+bool
+Mutex::try_lock()
+{
+ HANDLE mtx(reinterpret_cast<HANDLE>(blackbox));
+ return WaitForSingleObject(mtx, 0)==WAIT_FAILED;
+}
+
+
+RecMutex::RecMutex()
+{
+ // Win32 mutexes are recursive by default.
+}
+
+
+RWLock::RWLock()
+{
+}
+
+RWLock::~RWLock()
+{
+}
+
+void
+RWLock::reader_lock()
+{
+}
+
+void
+RWLock::reader_unlock()
+{
+}
+
+bool
+RWLock::reader_trylock()
+{
+}
+
+void
+RWLock::writer_lock()
+{
+}
+
+void
+RWLock::writer_unlock()
+{
+}
+
+bool
+RWLock::writer_trylock()
+{
+}
+
+#endif
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