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98 lines
3.4 KiB
C
98 lines
3.4 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape Portable Runtime (NSPR).
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef PLARENAS_H
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#define PLARENAS_H
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PR_BEGIN_EXTERN_C
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typedef struct PLArenaPool PLArenaPool;
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/*
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** Initialize an arena pool with the given name for debugging and metering,
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** with a minimum gross size per arena of size bytes. The net size per arena
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** is smaller than the gross size by a header of four pointers plus any
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** necessary padding for alignment.
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**
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** Note: choose a gross size that's a power of two to avoid the heap allocator
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** rounding the size up.
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**/
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PR_EXTERN(void) PL_InitArenaPool(
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PLArenaPool *pool, const char *name, PRUint32 size, PRUint32 align);
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/*
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** Finish using arenas, freeing all memory associated with them.
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**/
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PR_EXTERN(void) PL_ArenaFinish(void);
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/*
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** Free the arenas in pool. The user may continue to allocate from pool
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** after calling this function. There is no need to call PL_InitArenaPool()
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** again unless PL_FinishArenaPool(pool) has been called.
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**/
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PR_EXTERN(void) PL_FreeArenaPool(PLArenaPool *pool);
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/*
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** Free the arenas in pool and finish using it altogether.
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**/
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PR_EXTERN(void) PL_FinishArenaPool(PLArenaPool *pool);
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/*
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** Compact all of the arenas in a pool so that no space is wasted.
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** NOT IMPLEMENTED. Do not use.
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**/
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PR_EXTERN(void) PL_CompactArenaPool(PLArenaPool *pool);
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/*
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** Friend functions used by the PL_ARENA_*() macros.
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**/
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PR_EXTERN(void *) PL_ArenaAllocate(PLArenaPool *pool, PRUint32 nb);
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PR_EXTERN(void *) PL_ArenaGrow(
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PLArenaPool *pool, void *p, PRUint32 size, PRUint32 incr);
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PR_EXTERN(void) PL_ArenaRelease(PLArenaPool *pool, char *mark);
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/*
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** memset contents of all arenas in pool to pattern
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*/
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PR_EXTERN(void) PL_ClearArenaPool(PLArenaPool *pool, PRInt32 pattern);
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PR_END_EXTERN_C
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#endif /* PLARENAS_H */
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