FreeType 1.31.1

lib/ttmutex.c

@@ -0,0 +1,85 @@
+/*******************************************************************
+ *
+ *  ttmutex.c                                                1.0
+ *
+ *    Mutual exclusion object, single-threaded implementation
+ *
+ *  Copyright 1996-1999 by
+ *  David Turner, Robert Wilhelm, and Werner Lemberg.
+ *
+ *  This file is part of the FreeType project, and may only be used
+ *  modified and distributed under the terms of the FreeType project
+ *  license, LICENSE.TXT.  By continuing to use, modify, or distribute
+ *  this file you indicate that you have read the license and
+ *  understand and accept it fully.
+ *
+ *  NOTE:  This is a generic non-functional implementation
+ *         that you are welcome to refine for your own system.
+ *
+ *         Please name your system-specific source with a
+ *         different name (like ttmutex-os2.c or ttmutex-linux.c)
+ *         and change your makefile accordingly.
+ *
+ ******************************************************************/
+
+#include "ttmutex.h"
+
+
+/* required by the tracing mode */
+#undef  TT_COMPONENT
+#define TT_COMPONENT  trace_mutex
+
+
+/* ANSI C prevents the compilation of empty units.  We thus introduce */
+/* a dummy typedef to get rid of compiler warnings/errors.            */
+/* Note that gcc's -ansi -pedantic does not report any error here.    */
+/* Watcom, VC++ or Borland C++ do however.                            */
+
+  typedef void  _ttmutex_to_satisfy_ANSI_C_;
+
+
+#ifdef TT_CONFIG_OPTION_THREAD_SAFE
+
+  LOCAL_FUNC
+  void  TT_Mutex_Create ( TMutex*  mutex )
+  {
+    *mutex = (void*)-1;
+    /* Replace this line with your own mutex creation code */
+  }
+
+
+  LOCAL_FUNC
+  void  TT_Mutex_Delete ( TMutex*  mutex )
+  {
+    *mutex = (void*)0;
+    /* Replace this line with your own mutex destruction code */
+  }
+
+
+  LOCAL_FUNC
+  void  TT_Mutex_Lock   ( TMutex*  mutex )
+  {
+    /* NOTE: It is legal to call this function with a NULL argument */
+    /*       in which case an immediate return is appropriate.      */
+    if ( !mutex )
+      return;
+
+    ; /* Insert your own mutex locking code here */
+  }
+
+
+  LOCAL_FUNC
+  void  TT_Mutex_Release( TMutex*  mutex )
+  {
+    /* NOTE: It is legal to call this function with a NULL argument */
+    /*       in which case an immediate return is appropriate       */
+    if ( !mutex )
+      return;
+
+    ; /* Insert your own mutex release code here */
+  }
+
+#endif /* TT_CONFIG_OPTION_THREAD_SAFE */
+
+
+/* END */