gd mm

mm.patch

diff --git a/src/gdhelpers.c b/src/gdhelpers.c
index 20fff5c..a64278b 100644
--- a/src/gdhelpers.c
+++ b/src/gdhelpers.c
@@ -14,6 +14,33 @@
 
 #define SEP_TEST (separators[*((unsigned char *) s)])
 
+static inline void* gd_malloc_wrapper(size_t size)
+{
+	return malloc(size);
+}
+
+static inline void* gd_calloc_wrapper(size_t count, size_t size)
+{
+	return calloc(count, size);
+}
+
+static inline void* gd_realloc_wrapper(void *ptr, size_t size)
+{
+	return realloc(ptr, size);
+}
+
+static inline void gd_free_wrapper(void *ptr)
+{
+	free(ptr);
+}
+
+gd_mm_handlers_t mm = {
+	gd_malloc_wrapper,
+	gd_calloc_wrapper,
+	gd_realloc_wrapper,
+	gd_free_wrapper
+};
+
 char *
 gd_strtok_r (char *s, char *sep, char **state)
 {
@@ -66,27 +93,27 @@ gd_strtok_r (char *s, char *sep, char **state)
 
 void * gdCalloc (size_t nmemb, size_t size)
 {
-	return calloc (nmemb, size);
+	return mm._calloc (nmemb, size);
 }
 
 void *
 gdMalloc (size_t size)
 {
-	return malloc (size);
+	return mm._malloc (size);
 }
 
 void *
 gdRealloc (void *ptr, size_t size)
 {
-	return realloc (ptr, size);
+	return mm._realloc (ptr, size);
 }
 
 void *
 gdReallocEx (void *ptr, size_t size)
 {
-	void *newPtr = gdRealloc (ptr, size);
+	void *newPtr = mm._realloc (ptr, size);
 	if (!newPtr && ptr)
-		gdFree(ptr);
+		mm._free(ptr);
 	return newPtr;
 }
 
@@ -112,7 +139,10 @@ gdReallocEx (void *ptr, size_t size)
 */
 BGD_DECLARE(void) gdFree (void *ptr)
 {
-	free (ptr);
+	mm._free (ptr);
 }
 
-
+void gdMemorySetup(gd_mm_handlers_t *handlers)
+{
+	mm = *handlers;
+}
diff --git a/src/gdhelpers.h b/src/gdhelpers.h
index 2a96b8b..1a53420 100644
--- a/src/gdhelpers.h
+++ b/src/gdhelpers.h
@@ -69,6 +69,20 @@ extern "C" {
 #define DPI2DPCM(dpi)  (unsigned int)((dpi)/2.54 + 0.5)
 #define DPI2DPM(dpi)   (unsigned int)((dpi)/0.0254 + 0.5)
 
+	typedef void* (*gdMallocFunction)(size_t size);
+	typedef void* (*gdCallocFunction)(size_t count, size_t size);
+	typedef void* (*gdReallocFunction)(void * ptr, size_t size);
+	typedef void  (*gdFreeFunction)(void *ptr);
+
+	typedef struct {
+		gdMallocFunction   _malloc;
+		gdCallocFunction   _calloc;
+		gdReallocFunction  _realloc;
+		gdFreeFunction     _free;
+	} gd_mm_handlers_t;
+
+	void gdMemorySetup(gd_mm_handlers_t *mm);
+
 #endif /* GDHELPERS_H */
 
 #ifdef __cplusplus