зеркало из https://github.com/mozilla/gecko-dev.git
119 строки
4.7 KiB
C
119 строки
4.7 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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/*******************************************************************************
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S P O R T M O D E L
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_____
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____/_____\____
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/__o____o____o__\ __
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\_______________/ (@@)/
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/\_____|_____/\ x~[]~
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~~~~~~~~~~~/~~~~~~~|~~~~~~~\~~~~~~~~/\~~~~~~~~~
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Advanced Technology Garbage Collector
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Copyright (c) 1997 Netscape Communications, Inc. All rights reserved.
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Recovered by: Warren Harris
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*******************************************************************************/
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#ifndef __SMGEN__
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#define __SMGEN__
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#include "smpool.h"
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#include "smobj.h"
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SM_BEGIN_EXTERN_C
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/*******************************************************************************
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* Generations
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******************************************************************************/
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#define SM_GEN_COUNT (SMGenNum_Static - SMGenNum_Freshman + 1)
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#define SM_IS_GC_SPACE(genNum) ((genNum) < SMGenNum_Malloc)
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#define SM_IS_MALLOC_SPACE(genNum) ((genNum) == SMGenNum_Malloc)
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#define SM_IS_FREE_SPACE(genNum) ((genNum) == SMGenNum_Free)
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typedef struct SMGen {
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SMPool pool;
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PRUword allocThreshold;
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PRUword collectCount;
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} SMGen;
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#define SM_DEFAULT_ALLOC_THRESHOLD (16 * 1024) /* XXX ??? */
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extern PRStatus
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sm_InitGen(SMGen* gen, PRUword allocThreshold);
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extern void
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sm_FiniGen(SMGen* gen);
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/* Like sm_PoolAllocObj, but is only used to allocate an object in a new
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generation during gc. */
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extern SMObjStruct*
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sm_GenPromoteObj(SMGen* gen, SMBucket bucket);
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/*******************************************************************************
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* Generation Operations
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*
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* Unlike their pool equivalents, these operations update the card-table.
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******************************************************************************/
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#define SM_GEN_ALLOC_OBJ(result, gen, bucket) \
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(result = (SMObjStruct*)sm_PoolAllocObj(&(gen)->pool, bucket), \
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(result ? SM_DIRTY_PAGE(result) : (void)0)) \
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#define SM_GEN_DESTROY_PAGE(gen, freePd) \
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{ \
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SMPageDesc* _pd1 = (freePd); \
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SMPage* _page1 = SM_PAGEDESC_PAGE(_pd1); \
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SM_CLEAN_PAGE(_page1); \
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SM_POOL_DESTROY_PAGE(&(gen)->pool, _pd1); \
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} \
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#define SM_GEN_ALLOC_LARGE_OBJ(result, gen, genNum, size) \
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(result = (SMObjStruct*)sm_PoolAllocLargeObj(&(gen)->pool, genNum, size), \
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(result ? SM_DIRTY_PAGE(result) : (void)0)) \
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#define SM_GEN_FREE_LARGE_OBJ(gen, obj) \
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{ \
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SMObjStruct* _obj1 = (obj); \
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SMPage* _page1 = (SMPage*)_obj1; \
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SM_CLEAN_PAGE(_page1); \
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SM_POOL_FREE_LARGE_OBJ(&(gen)->pool, _obj1); \
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} \
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/******************************************************************************/
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#ifdef DEBUG
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extern PRUword
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sm_GenSpaceAvailable(SMGenNum genNum);
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#endif /* DEBUG */
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/******************************************************************************/
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SM_END_EXTERN_C
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#endif /* __SMGEN__ */
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/******************************************************************************/
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