projects / apple / libc.git / blame
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|---|---|---|
| e9ce8d39 A |
1 | /* |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 734aad71 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. Please obtain a copy of the License at | |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 11 | * file. | |
| 12 | * | |
| 13 | * The Original Code and all software distributed under the License are | |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| e9ce8d39 A |
15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 734aad71 A |
17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 18 | * Please see the License for the specific language governing rights and | |
| 19 | * limitations under the License. | |
| e9ce8d39 A |
20 | * |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | ||
| 9385eb3d | 24 | #import <malloc/malloc.h> |
| e9ce8d39 A |
25 | |
| 26 | #define SCALABLE_MALLOC_ADD_GUARD_PAGES (1 << 0) | |
| 27 | // add a guard page before and after each VM region to help debug | |
| 28 | #define SCALABLE_MALLOC_DONT_PROTECT_PRELUDE (1 << 1) | |
| 29 | // do not protect prelude page | |
| 30 | #define SCALABLE_MALLOC_DONT_PROTECT_POSTLUDE (1 << 2) | |
| 31 | // do not protect postlude page | |
| 32 | #define SCALABLE_MALLOC_DO_SCRIBBLE (1 << 3) | |
| 33 | // write 0x55 onto free blocks | |
| 224c7076 | 34 | #define SCALABLE_MALLOC_ABORT_ON_ERROR (1 << 4) |
| 34e8f829 A |
35 | // call abort() on any malloc error, such as double free or out of memory. |
| 36 | #define SCALABLE_MALLOC_PURGEABLE (1 << 5) | |
| 37 | // allocate objects such that they may be used with VM purgability APIs | |
| 38 | #define SCALABLE_MALLOC_ABORT_ON_CORRUPTION (1 << 6) | |
| 39 | // call abort() on malloc errors, but not on out of memory. | |
| 40 | ||
| e9ce8d39 A |
41 | extern malloc_zone_t *create_scalable_zone(size_t initial_size, unsigned debug_flags); |
| 42 | /* Create a new zone that scales for small objects or large objects */ | |
| 43 | ||
| 34e8f829 A |
44 | extern malloc_zone_t *create_purgeable_zone(size_t initial_size, malloc_zone_t *malloc_default_zone, unsigned debug_flags); |
| 45 | /* Create a new zone that supports malloc_make{un}purgeable() discipline. */ | |
| 46 | ||
| 47 | extern malloc_zone_t *create_legacy_scalable_zone(size_t initial_size, unsigned debug_flags); | |
| 48 | /* | |
| 49 | * For use by CheckFix: create a new zone whose behavior is, apart from | |
| 50 | * the use of death-row and per-CPU magazines, that of Leopard. | |
| 51 | */ | |
| 52 | ||
| e9ce8d39 A |
53 | /***** Private API for debug and performance tools ********/ |
| 54 | ||
| 9385eb3d A |
55 | extern boolean_t scalable_zone_statistics(malloc_zone_t *zone, malloc_statistics_t *stats, unsigned subzone); |
| 56 | /* Fills stats with some statistics; | |
| 57 | 1 is returned on success; else 0 is returned | |
| 58 | Currently: subzone=0 => tiny; subzone=1 => small; subzone=2 => large; subzone=3 => huge; any other subzone => returns 0 | |
| e9ce8d39 A |
59 | */ |
| 60 |