106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: vmclear.c /main/2 1996/05/08 20:01:27 drk $ */
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/***************************************************************
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* *
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* AT&T - PROPRIETARY *
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* *
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* THIS IS PROPRIETARY SOURCE CODE LICENSED BY *
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* AT&T CORP. *
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* *
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* Copyright (c) 1995 AT&T Corp. *
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* All Rights Reserved *
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* *
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* This software is licensed by AT&T Corp. *
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* under the terms and conditions of the license in *
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* http://www.research.att.com/orgs/ssr/book/reuse *
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* *
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* This software was created by the *
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* Software Engineering Research Department *
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* AT&T Bell Laboratories *
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* *
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* For further information contact *
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* gsf@research.att.com *
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* *
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***************************************************************/
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#include "vmhdr.h"
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/* Clear out all allocated space.
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**
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** Written by (Kiem-)Phong Vo, kpv@research.att.com, 01/16/94.
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*/
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#if __STD_C
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int vmclear(Vmalloc_t* vm)
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#else
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vmclear(vm)
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Vmalloc_t* vm;
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#endif
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{
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reg Seg_t* seg;
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reg Seg_t* next;
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reg Block_t* tp;
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reg size_t size, s;
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reg Vmdata_t* vd = vm->data;
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if(!(vd->mode&VM_TRUST) )
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{ if(ISLOCK(vd,0))
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return -1;
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SETLOCK(vd,0);
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}
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vd->free = vd->wild = NIL(Block_t*);
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vd->pool = 0;
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if(vd->mode&(VM_MTBEST|VM_MTDEBUG|VM_MTPROFILE) )
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{ vd->root = NIL(Block_t*);
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for(s = 0; s < S_TINY; ++s)
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TINY(vd)[s] = NIL(Block_t*);
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for(s = 0; s <= S_CACHE; ++s)
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CACHE(vd)[s] = NIL(Block_t*);
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}
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for(seg = vd->seg; seg; seg = next)
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{ next = seg->next;
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tp = SEGBLOCK(seg);
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size = seg->baddr - ((uchar*)tp) - 2*sizeof(Head_t);
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SEG(tp) = seg;
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SIZE(tp) = size;
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if((vd->mode&(VM_MTLAST|VM_MTPOOL)) )
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seg->free = tp;
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else
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{ SIZE(tp) |= BUSY|JUNK;
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LINK(tp) = CACHE(vd)[C_INDEX(SIZE(tp))];
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CACHE(vd)[C_INDEX(SIZE(tp))] = tp;
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}
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tp = BLOCK(seg->baddr);
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SEG(tp) = seg;
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SIZE(tp) = BUSY;
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}
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CLRLOCK(vd,0);
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return 0;
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}
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