Remove ancient trunk folder from svn repository

[synfig.git] / ETL / ETL / _condition.h

diff --git a/ETL/ETL/_condition.h b/ETL/ETL/_condition.h
new file mode 100644 (file)
index 0000000..26a4d2d
--- /dev/null
+++ b/ETL/ETL/_condition.h
@@ -0,0 +1,70 @@
+/*! ========================================================================
+** Extended Template and Library
+** 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__CONDITION_H_
+#define __ETL__CONDITION_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 condition : private mutex
+{
+       bool flag;
+public:
+       condition()
+       { flag=false; }
+       ~condition()
+       { }
+       void operator()()
+       { flag=true; }
+       void wait()
+       {
+               mutex::lock lock(*this);
+
+               while(!flag)Yield();
+               flag=false;
+       }
+       void wait_next()
+       {
+               mutex::lock lock(*this);
+
+               flag=false;
+               while(!flag)Yield();
+       }
+};
+
+_ETL_END_NAMESPACE
+
+/* === E X T E R N S ======================================================= */
+
+/* === E N D =============================================================== */
+
+#endif