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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| 2 /* ***** BEGIN LICENSE BLOCK ***** |
| 3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| 4 * |
| 5 * The contents of this file are subject to the Mozilla Public License Version |
| 6 * 1.1 (the "License"); you may not use this file except in compliance with |
| 7 * the License. You may obtain a copy of the License at |
| 8 * http://www.mozilla.org/MPL/ |
| 9 * |
| 10 * Software distributed under the License is distributed on an "AS IS" basis, |
| 11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| 12 * for the specific language governing rights and limitations under the |
| 13 * License. |
| 14 * |
| 15 * The Original Code is the Netscape Portable Runtime (NSPR). |
| 16 * |
| 17 * The Initial Developer of the Original Code is |
| 18 * Netscape Communications Corporation. |
| 19 * Portions created by the Initial Developer are Copyright (C) 1998-2000 |
| 20 * the Initial Developer. All Rights Reserved. |
| 21 * |
| 22 * Contributor(s): |
| 23 * |
| 24 * Alternatively, the contents of this file may be used under the terms of |
| 25 * either the GNU General Public License Version 2 or later (the "GPL"), or |
| 26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| 27 * in which case the provisions of the GPL or the LGPL are applicable instead |
| 28 * of those above. If you wish to allow use of your version of this file only |
| 29 * under the terms of either the GPL or the LGPL, and not to allow others to |
| 30 * use your version of this file under the terms of the MPL, indicate your |
| 31 * decision by deleting the provisions above and replace them with the notice |
| 32 * and other provisions required by the GPL or the LGPL. If you do not delete |
| 33 * the provisions above, a recipient may use your version of this file under |
| 34 * the terms of any one of the MPL, the GPL or the LGPL. |
| 35 * |
| 36 * ***** END LICENSE BLOCK ***** */ |
| 37 |
| 38 #if defined(PLARENAS_H) |
| 39 #else /* defined(PLARENAS_H) */ |
| 40 #define PLARENAS_H |
| 41 |
| 42 PR_BEGIN_EXTERN_C |
| 43 |
| 44 typedef struct PLArenaPool PLArenaPool; |
| 45 |
| 46 /* |
| 47 ** Allocate an arena pool as specified by the parameters. |
| 48 ** |
| 49 ** This is equivelant to allocating the space yourself and then |
| 50 ** calling PL_InitArenaPool(). |
| 51 ** |
| 52 ** This function may fail (and return a NULL) for a variety of |
| 53 ** reasons. The reason for a particular failure can be discovered |
| 54 ** by calling PR_GetError(). |
| 55 */ |
| 56 #if 0 /* Not implemented */ |
| 57 PR_EXTERN(PLArenaPool*) PL_AllocArenaPool( |
| 58 const char *name, PRUint32 size, PRUint32 align); |
| 59 #endif |
| 60 |
| 61 /* |
| 62 ** Destroy an arena pool previously allocated by PL_AllocArenaPool(). |
| 63 ** |
| 64 ** This function may fail if the arena is not empty and the caller |
| 65 ** wishes to check for empty upon descruction. |
| 66 */ |
| 67 #if 0 /* Not implemented */ |
| 68 PR_EXTERN(PRStatus) PL_DestroyArenaPool(PLArenaPool *pool, PRBool checkEmpty); |
| 69 #endif |
| 70 |
| 71 |
| 72 /* |
| 73 ** Initialize an arena pool with the given name for debugging and metering, |
| 74 ** with a minimum size per arena of size bytes. |
| 75 **/ |
| 76 PR_EXTERN(void) PL_InitArenaPool( |
| 77 PLArenaPool *pool, const char *name, PRUint32 size, PRUint32 align); |
| 78 |
| 79 /* |
| 80 ** Finish using arenas, freeing all memory associated with them. |
| 81 **/ |
| 82 PR_EXTERN(void) PL_ArenaFinish(void); |
| 83 |
| 84 /* |
| 85 ** Free the arenas in pool. The user may continue to allocate from pool |
| 86 ** after calling this function. There is no need to call PL_InitArenaPool() |
| 87 ** again unless PL_FinishArenaPool(pool) has been called. |
| 88 **/ |
| 89 PR_EXTERN(void) PL_FreeArenaPool(PLArenaPool *pool); |
| 90 |
| 91 /* |
| 92 ** Free the arenas in pool and finish using it altogether. |
| 93 **/ |
| 94 PR_EXTERN(void) PL_FinishArenaPool(PLArenaPool *pool); |
| 95 |
| 96 /* |
| 97 ** Compact all of the arenas in a pool so that no space is wasted. |
| 98 **/ |
| 99 PR_EXTERN(void) PL_CompactArenaPool(PLArenaPool *pool); |
| 100 |
| 101 /* |
| 102 ** Friend functions used by the PL_ARENA_*() macros. |
| 103 **/ |
| 104 PR_EXTERN(void *) PL_ArenaAllocate(PLArenaPool *pool, PRUint32 nb); |
| 105 |
| 106 PR_EXTERN(void *) PL_ArenaGrow( |
| 107 PLArenaPool *pool, void *p, PRUint32 size, PRUint32 incr); |
| 108 |
| 109 PR_EXTERN(void) PL_ArenaRelease(PLArenaPool *pool, char *mark); |
| 110 |
| 111 PR_END_EXTERN_C |
| 112 |
| 113 #endif /* defined(PLARENAS_H) */ |
| 114 |
| 115 /* plarenas */ |
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