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/*
* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef THIRD_PARTY_APPLE_APSL_MALLOC_H_
#define THIRD_PARTY_APPLE_APSL_MALLOC_H_
typedef struct _ChromeMallocZone {
/* Only zone implementors should depend on the layout of this structure;
Regular callers should use the access functions below */
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 */
void *(*valloc)(struct _malloc_zone_t *zone, size_t size); /* same as malloc, but block returned is set to zero and is guaranteed to be page aligned */
void (*free)(struct _malloc_zone_t *zone, void *ptr);
void *(*realloc)(struct _malloc_zone_t *zone, void *ptr, size_t size);
void (*destroy)(struct _malloc_zone_t *zone); /* zone is destroyed and all memory reclaimed */
const char *zone_name;
/* Optional batch callbacks; these may be NULL */
unsigned (*batch_malloc)(struct _malloc_zone_t *zone, size_t size, void **results, unsigned num_requested); /* given a size, returns pointers capable of holding that size; returns the number of pointers allocated (maybe 0 or less than num_requested) */
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;
unsigned version;
/* aligned memory allocation. The callback may be NULL. Present in version >= 5. */
void *(*memalign)(struct _malloc_zone_t *zone, size_t alignment, size_t size);
/* free a pointer known to be in zone and known to have the given size. The callback may be NULL. Present in version >= 6.*/
void (*free_definite_size)(struct _malloc_zone_t *zone, void *ptr, size_t size);
/* Empty out caches in the face of memory pressure. The callback may be NULL. Present in version >= 8. */
size_t (*pressure_relief)(struct _malloc_zone_t *zone, size_t goal);
} ChromeMallocZone;
#endif // THIRD_PARTY_APPLE_APSL_MALLOC_H_
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