Libc-498.1.5.tar.gz

[apple/libc.git] / include / malloc / malloc.h

diff --git a/include/malloc/malloc.h b/include/malloc/malloc.h
index a39bf7bd03d79b828eefbfda6030ccaef831cfe4..5db543d5f0c4b16ab0a847879cf98621f245fe40 100644 (file)
--- a/include/malloc/malloc.h
+++ b/include/malloc/malloc.h
@@ -34,8 +34,8 @@ __BEGIN_DECLS
 typedef struct _malloc_zone_t {
     /* Only zone implementors should depend on the layout of this structure;
     Regular callers should use the access functions below */
-    unsigned   version;
-    void       *reserved2;
+    void       *reserved1;     /* RESERVED FOR CFAllocator DO NOT USE */
+    void       *reserved2;     /* RESERVED FOR CFAllocator DO NOT USE */
     size_t     (*size)(struct _malloc_zone_t *zone, const void *ptr); /* returns the size of a block or 0 if not in this zone; must be fast, especially for negative answers */
     void       *(*malloc)(struct _malloc_zone_t *zone, size_t size);
     void       *(*calloc)(struct _malloc_zone_t *zone, size_t num_items, size_t size); /* same as malloc, but block returned is set to zero */
@@ -50,7 +50,7 @@ typedef struct _malloc_zone_t {
     void       (*batch_free)(struct _malloc_zone_t *zone, void **to_be_freed, unsigned num_to_be_freed); /* frees all the pointers in to_be_freed; note that to_be_freed may be overwritten during the process */
 
     struct malloc_introspection_t      *introspect;
-    void       *reserved5;
+    unsigned   version;
 } malloc_zone_t;
 
 /*********     Creation and destruction        ************/
@@ -88,6 +88,9 @@ extern malloc_zone_t *malloc_zone_from_ptr(const void *ptr);
 extern size_t malloc_size(const void *ptr);
     /* Returns size of given ptr */
 
+extern size_t malloc_good_size(size_t size);
+    /* Returns number of bytes greater than or equal to size that can be allocated without padding */
+
 /*********     Batch methods   ************/
 
 extern unsigned malloc_zone_batch_malloc(malloc_zone_t *zone, size_t size, void **results, unsigned num_requested);
@@ -177,6 +180,17 @@ extern void malloc_zone_log(malloc_zone_t *zone, void *address);
     If address==0 nothing is logged;
     If address==-1 all activity is logged;
     Else only the activity regarding address is logged */
+
+struct mstats {
+    size_t     bytes_total;
+    size_t     chunks_used;
+    size_t     bytes_used;
+    size_t     chunks_free;
+    size_t     bytes_free;
+};
+
+extern struct mstats mstats(void);
+
 __END_DECLS
 
 #endif /* _MALLOC_MALLOC_H_ */