gallium: Memory debugging utilities.

There are no known tools for windows kernel memory debugging, so this is a
simple set of malloc etc wrappers.

Enabled by default on win32 debug builds

src/gallium/include/pipe/p_util.h

@@ -39,6 +39,22 @@ extern "C" {
 #endif
 
 
+#if defined(WIN32) && defined(DEBUG) /* memory debugging */
+
+#include "p_debug.h"
+
+#define MALLOC( _size ) \
+   debug_malloc( __FILE__, __LINE__, __FUNCTION__, _size )
+#define CALLOC( _count, _size ) \
+   debug_calloc(__FILE__, __LINE__, __FUNCTION__, _count, _size )
+#define FREE( _ptr ) \
+   debug_free( __FILE__, __LINE__, __FUNCTION__,  _ptr )
+#define REALLOC( _ptr, _old_size, _size ) \
+   debug_realloc( __FILE__, __LINE__, __FUNCTION__,  _ptr, _old_size, _size )
+#define GETENV( X ) NULL
+
+#else
+   
 #ifdef WIN32
 
 void * __stdcall
@@ -104,7 +120,7 @@ REALLOC( void *old_ptr, unsigned old_size, unsigned new_size )
 
 #define GETENV( X )  NULL
 
-#else /* WIN32 */
+#else /* !WIN32 */
 
 #define MALLOC( SIZE )  malloc( SIZE )
 
@@ -116,7 +132,8 @@ REALLOC( void *old_ptr, unsigned old_size, unsigned new_size )
 
 #define GETENV( X )  getenv( X )
 
-#endif /* WIN32 */
+#endif /* !WIN32 */
+#endif /* !DEBUG */
 
 #define MALLOC_STRUCT(T)   (struct T *) MALLOC(sizeof(struct T))