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[synfig.git] / synfig-core / trunk / src / synfig / mutex.h

diff --git a/synfig-core/trunk/src/synfig/mutex.h b/synfig-core/trunk/src/synfig/mutex.h
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+/* === S I N F G =========================================================== */
+/*!    \file mutex.h
+**     \brief Template Header
+**
+**     $Id: mutex.h,v 1.2 2005/01/10 07:40:26 darco Exp $
+**
+**     \legal
+**     Copyright (c) 2002 Robert B. Quattlebaum Jr.
+**
+**     This software and associated documentation
+**     are CONFIDENTIAL and PROPRIETARY property of
+**     the above-mentioned copyright holder.
+**
+**     You may not copy, print, publish, or in any
+**     other way distribute this software without
+**     a prior written agreement with
+**     the copyright holder.
+**     \endlegal
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SINFG_MUTEX_H
+#define __SINFG_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 sinfg {
+
+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 sinfg
+
+/* === E N D =============================================================== */
+
+#endif