X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=ETL%2FETL%2F_mutex_null.h;fp=ETL%2FETL%2F_mutex_null.h;h=6c0d21e05594a8486fe26168c6fab2f26cd357fc;hb=a095981e18cc37a8ecc7cd237cc22b9c10329264;hp=0000000000000000000000000000000000000000;hpb=9459638ad6797b8139f1e9f0715c96076dbf0890;p=synfig.git

diff --git a/ETL/ETL/_mutex_null.h b/ETL/ETL/_mutex_null.h
new file mode 100644
index 0000000..6c0d21e
--- /dev/null
+++ b/ETL/ETL/_mutex_null.h
@@ -0,0 +1,71 @@
+/*! ========================================================================
+** Extended Template and Library
+** NULL Mutex Abstraction Class Implementation
+** $Id$
+**
+** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+**
+** 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.
+**
+** === N O T E S ===========================================================
+**
+** This is an internal header file, included by other ETL headers.
+** You should not attempt to use it directly.
+**
+** ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __ETL__MUTEX_NULL_H_
+#define __ETL__MUTEX_NULL_H_
+
+/* === H E A D E R S ======================================================= */
+/* === M A C R O S ========================================================= */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+_ETL_BEGIN_NAMESPACE
+
+class mutex_null
+{
+public:
+
+	mutex_null(){}
+	~mutex_null(){}
+	//! Exception-safe mutex lock class
+/*
+	class lock
+	{
+		mutex *_mtx;
+	public:
+		lock(mutex &x):_mtx(&x) { _mtx->lock_mutex(); }
+		~lock() { _mtx->unlock_mutex(); }
+		mutex &get() { return *_mtx; }
+	};
+*/
+	class lock
+	{
+	public:
+		lock(mutex_null &/*x*/) { }
+	};
+
+	void lock_mutex(){}
+	bool try_lock_mutex(){return true;}
+	void unlock_mutex(){}
+};
+
+_ETL_END_NAMESPACE
+
+/* === E X T E R N S ======================================================= */
+
+/* === E N D =============================================================== */
+
+#endif