00001 /* 00002 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. 00003 * 00004 * @APPLE_LICENSE_HEADER_START@ 00005 * 00006 * The contents of this file constitute Original Code as defined in and 00007 * are subject to the Apple Public Source License Version 1.1 (the 00008 * "License"). You may not use this file except in compliance with the 00009 * License. Please obtain a copy of the License at 00010 * http://www.apple.com/publicsource and read it before using this file. 00011 * 00012 * This Original Code and all software distributed under the License are 00013 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER 00014 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 00015 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 00016 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the 00017 * License for the specific language governing rights and limitations 00018 * under the License. 00019 * 00020 * @APPLE_LICENSE_HEADER_END@ 00021 */ 00022 00023 #import <objc/malloc.h> 00024 00025 typedef malloc_zone_t NXZone; 00026 00027 #define NX_NOZONE ((NXZone *)0) 00028 00029 /********* Interface to zone based malloc ************/ 00030 00031 extern NXZone *NXDefaultMallocZone(void); 00032 // Returns the default zone used by the malloc(3) calls 00033 00034 extern NXZone *NXCreateZone(size_t startSize, size_t granularity, int canFree); 00035 // Create a new zone with its own memory pool. 00036 // canfree: if 0 the allocator will never free memory and mallocing will be fast 00037 00038 extern void NXNameZone(NXZone *z, const char *name); 00039 // name a zone; The string will be copied 00040 00041 extern void *NXZoneMalloc(malloc_zone_t *zone, size_t size); 00042 00043 extern void *NXZoneRealloc(malloc_zone_t *zone, void *ptr, size_t size); 00044 00045 extern void *NXZoneCalloc(NXZone *zonep, size_t numElems, size_t byteSize); 00046 // Allocates and then clears 00047 00048 extern void NXZoneFree(malloc_zone_t *zone, void *ptr); 00049 00050 extern void NXDestroyZone(malloc_zone_t *zone); 00051 00052 extern NXZone *NXZoneFromPtr(void *ptr); 00053 // Returns the zone for a pointer, or NX_NOZONE if not in any zone. 00054 // The ptr must have been returned from a malloc or realloc call. 00055