CFBase.h

/*
 * Copyright (c) 2009 Apple 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@
 */
/*	CFBase.c
	Copyright (c) 1998-2009, Apple Inc. All rights reserved.
	Responsibility: Christopher Kane
*/

#ifndef THIRD_PARTY_APPLE_APSL_CFBASE_H_
#define THIRD_PARTY_APPLE_APSL_CFBASE_H_

#include "CFRuntime.h"

struct ChromeCFAllocator9and10 {
    ChromeCFRuntimeBase _base;
#if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED
    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;
    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;
    void	*reserved5;
#endif
    CFAllocatorRef _allocator;
    CFAllocatorContext _context;
};

// TODO(avi): update upon source release; http://crbug.com/74589
struct ChromeCFAllocator11 {
  ChromeCFRuntimeBase _base;
  // CFAllocator in Darwin 9 included a complete copy of _malloc_zone_t. The
  // version in Darwin 10 had an abbreviated _malloc_zone_t that ended after the
  // version/"reserved" field (see above). Darwin 11 appears to have a truncated
  // _malloc_zone_t as well, but two fields larger than 9/10.
  void* presumedSizeFunctionPtr;
  void* presumedMallocFunctionPtr;
  void* presumedCallocFunctionPtr;
  void* presumedVallocFunctionPtr;
  void* presumedFreeFunctionPtr;
  void* presumedReallocFunctionPtr;
  void* presumedDestroyFunctionPtr;
  const char *zone_name;
  void* presumedBatchMallocFunctionPtr;
  void* presumedBatchFreeFunctionPtr;
  void* presumedIntrospectStructPtr;
  void* presumedReservedSlashVersion;  // always 6 in CFAllocators
  void* presumedMemalignFunctionPtr;
  void* presumedFreeDefiniteSizeFunctionPtr;
  CFAllocatorRef _allocator;
  CFAllocatorContext _context;
};

#endif  // THIRD_PARTY_APPLE_APSL_CFBASE_H_