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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* | |
| 3 * The contents of this file are subject to the Mozilla Public | |
| 4 * License Version 1.1 (the "License"); you may not use this file | |
| 5 * except in compliance with the License. You may obtain a copy of | |
| 6 * the License at http://www.mozilla.org/MPL/ | |
| 7 * | |
| 8 * Software distributed under the License is distributed on an "AS | |
| 9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
| 10 * implied. See the License for the specific language governing | |
| 11 * rights and limitations under the License. | |
| 12 * | |
| 13 * The Original Code is the Netscape Portable Runtime (NSPR). | |
| 14 * | |
| 15 * The Initial Developer of the Original Code is Netscape | |
| 16 * Communications Corporation. Portions created by Netscape are | |
| 17 * Copyright (C) 1998-2000 Netscape Communications Corporation. All | |
| 18 * Rights Reserved. | |
| 19 * | |
| 20 * Contributor(s): | |
| 21 * | |
| 22 * Alternatively, the contents of this file may be used under the | |
| 23 * terms of the GNU General Public License Version 2 or later (the | |
| 24 * "GPL"), in which case the provisions of the GPL are applicable | |
| 25 * instead of those above. If you wish to allow use of your | |
| 26 * version of this file only under the terms of the GPL and not to | |
| 27 * allow others to use your version of this file under the MPL, | |
| 28 * indicate your decision by deleting the provisions above and | |
| 29 * replace them with the notice and other provisions required by | |
| 30 * the GPL. If you do not delete the provisions above, a recipient | |
| 31 * may use your version of this file under either the MPL or the | |
| 32 * GPL. | |
| 33 */ | |
| 34 | |
| 35 /* | |
| 36 ** File: prmem.h | |
| 37 ** Description: API to NSPR 2.0 memory management functions | |
| 38 ** | |
| 39 */ | |
| 40 #ifndef prmem_h___ | |
| 41 #define prmem_h___ | |
| 42 | |
| 43 #include "prtypes.h" | |
| 44 #include <stddef.h> | |
| 45 #include <stdlib.h> | |
| 46 | |
| 47 PR_BEGIN_EXTERN_C | |
| 48 | |
| 49 /* | |
| 50 ** Thread safe memory allocation. | |
| 51 ** | |
| 52 ** NOTE: pr wraps up malloc, free, calloc, realloc so they are already | |
| 53 ** thread safe (and are not declared here - look in stdlib.h). | |
| 54 */ | |
| 55 | |
| 56 /* | |
| 57 ** PR_Malloc, PR_Calloc, PR_Realloc, and PR_Free have the same signatures | |
| 58 ** as their libc equivalent malloc, calloc, realloc, and free, and have | |
| 59 ** the same semantics. (Note that the argument type size_t is replaced | |
| 60 ** by PRUint32.) Memory allocated by PR_Malloc, PR_Calloc, or PR_Realloc | |
| 61 ** must be freed by PR_Free. | |
| 62 */ | |
| 63 | |
| 64 NSPR_API(void *) PR_Malloc(PRUint32 size); | |
| 65 | |
| 66 NSPR_API(void *) PR_Calloc(PRUint32 nelem, PRUint32 elsize); | |
| 67 | |
| 68 NSPR_API(void *) PR_Realloc(void *ptr, PRUint32 size); | |
| 69 | |
| 70 NSPR_API(void) PR_Free(void *ptr); | |
| 71 | |
| 72 /* | |
| 73 ** The following are some convenience macros defined in terms of | |
| 74 ** PR_Malloc, PR_Calloc, PR_Realloc, and PR_Free. | |
| 75 */ | |
| 76 | |
| 77 /*********************************************************************** | |
| 78 ** FUNCTION: PR_MALLOC() | |
| 79 ** DESCRIPTION: | |
| 80 ** PR_NEW() allocates an untyped item of size _size from the heap. | |
| 81 ** INPUTS: _size: size in bytes of item to be allocated | |
| 82 ** OUTPUTS: untyped pointer to the node allocated | |
| 83 ** RETURN: pointer to node or error returned from malloc(). | |
| 84 ***********************************************************************/ | |
| 85 #define PR_MALLOC(_bytes) (PR_Malloc((_bytes))) | |
| 86 | |
| 87 /*********************************************************************** | |
| 88 ** FUNCTION: PR_NEW() | |
| 89 ** DESCRIPTION: | |
| 90 ** PR_NEW() allocates an item of type _struct from the heap. | |
| 91 ** INPUTS: _struct: a data type | |
| 92 ** OUTPUTS: pointer to _struct | |
| 93 ** RETURN: pointer to _struct or error returns from malloc(). | |
| 94 ***********************************************************************/ | |
| 95 #define PR_NEW(_struct) ((_struct *) PR_MALLOC(sizeof(_struct))) | |
| 96 | |
| 97 /*********************************************************************** | |
| 98 ** FUNCTION: PR_REALLOC() | |
| 99 ** DESCRIPTION: | |
| 100 ** PR_REALLOC() re-allocates _ptr bytes from the heap as a _size | |
| 101 ** untyped item. | |
| 102 ** INPUTS: _ptr: pointer to node to reallocate | |
| 103 ** _size: size of node to allocate | |
| 104 ** OUTPUTS: pointer to node allocated | |
| 105 ** RETURN: pointer to node allocated | |
| 106 ***********************************************************************/ | |
| 107 #define PR_REALLOC(_ptr, _size) (PR_Realloc((_ptr), (_size))) | |
| 108 | |
| 109 /*********************************************************************** | |
| 110 ** FUNCTION: PR_CALLOC() | |
| 111 ** DESCRIPTION: | |
| 112 ** PR_CALLOC() allocates a _size bytes untyped item from the heap | |
| 113 ** and sets the allocated memory to all 0x00. | |
| 114 ** INPUTS: _size: size of node to allocate | |
| 115 ** OUTPUTS: pointer to node allocated | |
| 116 ** RETURN: pointer to node allocated | |
| 117 ***********************************************************************/ | |
| 118 #define PR_CALLOC(_size) (PR_Calloc(1, (_size))) | |
| 119 | |
| 120 /*********************************************************************** | |
| 121 ** FUNCTION: PR_NEWZAP() | |
| 122 ** DESCRIPTION: | |
| 123 ** PR_NEWZAP() allocates an item of type _struct from the heap | |
| 124 ** and sets the allocated memory to all 0x00. | |
| 125 ** INPUTS: _struct: a data type | |
| 126 ** OUTPUTS: pointer to _struct | |
| 127 ** RETURN: pointer to _struct | |
| 128 ***********************************************************************/ | |
| 129 #define PR_NEWZAP(_struct) ((_struct*)PR_Calloc(1, sizeof(_struct))) | |
| 130 | |
| 131 /*********************************************************************** | |
| 132 ** FUNCTION: PR_DELETE() | |
| 133 ** DESCRIPTION: | |
| 134 ** PR_DELETE() unallocates an object previosly allocated via PR_NEW() | |
| 135 ** or PR_NEWZAP() to the heap. | |
| 136 ** INPUTS: pointer to previously allocated object | |
| 137 ** OUTPUTS: the referenced object is returned to the heap | |
| 138 ** RETURN: void | |
| 139 ***********************************************************************/ | |
| 140 #define PR_DELETE(_ptr) { PR_Free(_ptr); (_ptr) = NULL; } | |
| 141 | |
| 142 /*********************************************************************** | |
| 143 ** FUNCTION: PR_FREEIF() | |
| 144 ** DESCRIPTION: | |
| 145 ** PR_FREEIF() conditionally unallocates an object previously allocated | |
| 146 ** vial PR_NEW() or PR_NEWZAP(). If the pointer to the object is | |
| 147 ** equal to zero (0), the object is not released. | |
| 148 ** INPUTS: pointer to previously allocated object | |
| 149 ** OUTPUTS: the referenced object is conditionally returned to the heap | |
| 150 ** RETURN: void | |
| 151 ***********************************************************************/ | |
| 152 #define PR_FREEIF(_ptr) if (_ptr) PR_DELETE(_ptr) | |
| 153 | |
| 154 PR_END_EXTERN_C | |
| 155 | |
| 156 #endif /* prmem_h___ */ | |
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Chromium Code Reviews
Issue 665543002:
Remove third_party/npapi/npspy. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master