+/* === S Y N F I G ========================================================= */
+/*! \file mutex.h
+** \brief Template Header
+**
+** $Id$
+**
+** \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
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIG_MUTEX_H
+#define __SYNFIG_MUTEX_H
+
+/* === H E A D E R S ======================================================= */
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+namespace synfig {
+
+class RecMutex;
+
+class Mutex
+{
+ friend class RecMutex;
+
+protected:
+ void* blackbox;
+
+public:
+
+ class Lock
+ {
+ Mutex& mutex;
+ public:
+ Lock(Mutex& x):mutex(x) { mutex.lock(); }
+ ~Lock() { mutex.unlock(); }
+ };
+
+ Mutex();
+ ~Mutex();
+
+ void lock();
+ void unlock();
+ bool try_lock();
+ bool is_locked();
+
+private:
+ //! Non-copyable
+ Mutex(const Mutex&);
+
+ //! Non-assignable
+ void operator=(const Mutex&);
+};
+
+class RecMutex : public Mutex
+{
+public:
+ RecMutex();
+
+ void unlock_all();
+};
+
+class RWLock
+{
+ void* blackbox;
+
+public:
+
+ class ReaderLock
+ {
+ RWLock& rw_lock;
+ public:
+ ReaderLock(RWLock& x):rw_lock(x) { rw_lock.reader_lock(); }
+ ~ReaderLock() { rw_lock.reader_unlock(); }
+ };
+ class WriterLock
+ {
+ RWLock& rw_lock;
+ public:
+ WriterLock(RWLock& x):rw_lock(x) { rw_lock.writer_lock(); }
+ ~WriterLock() { rw_lock.writer_unlock(); }
+ };
+
+ RWLock();
+ ~RWLock();
+
+ void reader_lock();
+ void reader_unlock();
+ bool reader_trylock();
+
+ void writer_lock();
+ void writer_unlock();
+ bool writer_trylock();
+};
+
+}; // END of namespace synfig
+
+/* === E N D =============================================================== */
+
+#endif