[Loki-lib-cvs] SF.net SVN: loki-lib:[1026] trunk/src/LevelMutex.cpp

[<ric...@us...>]

Revision: 1026
          http://loki-lib.svn.sourceforge.net/loki-lib/?rev=1026&view=rev
Author:   rich_sposato
Date:     2009-09-29 19:02:43 +0000 (Tue, 29 Sep 2009)

Log Message:
-----------
Changed #if statement used to decide to compile code.

Modified Paths:
--------------
    trunk/src/LevelMutex.cpp

Modified: trunk/src/LevelMutex.cpp
===================================================================
--- trunk/src/LevelMutex.cpp	2009-09-26 23:49:05 UTC (rev 1025)
+++ trunk/src/LevelMutex.cpp	2009-09-29 19:02:43 UTC (rev 1026)
@@ -20,8 +20,26 @@
 
 // ----------------------------------------------------------------------------
 
-#if (!defined(__CYGWIN__) || (defined(__CYGWIN__) && __GNUC__ > 3)) && !defined(__APPLE__)
+// First assume the compiler does allow thread-local storage by #defining the
+// macro which allows compiler to see the code inside this file.
+// Then #undefine the macro for compilers which are known for not supporting
+// thread-local storage.
+#define COMPILER_ALLOWS_THREAD_LOCAL_STORAGE 1
 
+// The __APPLE__ macro does not refer to a compiler, but to the Apple OSX operating system.
+#if defined( __APPLE__ )
+    #warning "GCC for Apple does not allow thread_local storage, so you can not use Loki::LevelMutex."
+    #undef COMPILER_ALLOWS_THREAD_LOCAL_STORAGE
+#endif
+
+#if ( defined( __CYGWIN__ ) && ( __GNUC__ <= 3 ) )
+    #warning "Older versions of GCC for Cygwin do not allow thread_local storage, so you can not use Loki::LevelMutex."
+    #undef COMPILER_ALLOWS_THREAD_LOCAL_STORAGE
+#endif
+
+#if defined( COMPILER_ALLOWS_THREAD_LOCAL_STORAGE )
+
+
 #include <loki/LevelMutex.h>
 
 #include <algorithm>
@@ -1143,6 +1161,4 @@
 
 } // end namespace Loki
 
-
-#endif
-
+#endif // #if defined( COMPILER_ALLOWS_THREAD_LOCAL_STORAGE )


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.