14887Schin /***********************************************************************
24887Schin * *
34887Schin * This software is part of the ast package *
4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1985-2010 AT&T Intellectual Property *
54887Schin * and is licensed under the *
64887Schin * Common Public License, Version 1.0 *
78462SApril.Chin@Sun.COM * by AT&T Intellectual Property *
84887Schin * *
94887Schin * A copy of the License is available at *
104887Schin * http://www.opensource.org/licenses/cpl1.0.txt *
114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
124887Schin * *
134887Schin * Information and Software Systems Research *
144887Schin * AT&T Research *
154887Schin * Florham Park NJ *
164887Schin * *
174887Schin * Glenn Fowler <gsf@research.att.com> *
184887Schin * David Korn <dgk@research.att.com> *
194887Schin * Phong Vo <kpv@research.att.com> *
204887Schin * *
214887Schin ***********************************************************************/
224887Schin #if defined(_UWIN) && defined(_BLD_ast)
234887Schin
_STUB_vmclear()244887Schin void _STUB_vmclear(){}
254887Schin
264887Schin #else
274887Schin
284887Schin #include "vmhdr.h"
294887Schin
304887Schin /* Clear out all allocated space.
314887Schin **
324887Schin ** Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
334887Schin */
344887Schin #if __STD_C
vmclear(Vmalloc_t * vm)354887Schin int vmclear(Vmalloc_t* vm)
364887Schin #else
374887Schin int vmclear(vm)
384887Schin Vmalloc_t* vm;
394887Schin #endif
404887Schin {
414887Schin reg Seg_t* seg;
424887Schin reg Seg_t* next;
434887Schin reg Block_t* tp;
444887Schin reg size_t size, s;
454887Schin reg Vmdata_t* vd = vm->data;
468462SApril.Chin@Sun.COM reg int inuse;
474887Schin
488462SApril.Chin@Sun.COM SETINUSE(vd, inuse);
494887Schin if(!(vd->mode&VM_TRUST) )
504887Schin { if(ISLOCK(vd,0))
518462SApril.Chin@Sun.COM { CLRINUSE(vd, inuse);
524887Schin return -1;
538462SApril.Chin@Sun.COM }
544887Schin SETLOCK(vd,0);
554887Schin }
564887Schin
574887Schin vd->free = vd->wild = NIL(Block_t*);
584887Schin vd->pool = 0;
594887Schin
604887Schin if(vd->mode&(VM_MTBEST|VM_MTDEBUG|VM_MTPROFILE) )
614887Schin { vd->root = NIL(Block_t*);
624887Schin for(s = 0; s < S_TINY; ++s)
634887Schin TINY(vd)[s] = NIL(Block_t*);
644887Schin for(s = 0; s <= S_CACHE; ++s)
654887Schin CACHE(vd)[s] = NIL(Block_t*);
664887Schin }
674887Schin
684887Schin for(seg = vd->seg; seg; seg = next)
694887Schin { next = seg->next;
704887Schin
714887Schin tp = SEGBLOCK(seg);
724887Schin size = seg->baddr - ((Vmuchar_t*)tp) - 2*sizeof(Head_t);
734887Schin
744887Schin SEG(tp) = seg;
754887Schin SIZE(tp) = size;
764887Schin if((vd->mode&(VM_MTLAST|VM_MTPOOL)) )
774887Schin seg->free = tp;
784887Schin else
794887Schin { SIZE(tp) |= BUSY|JUNK;
804887Schin LINK(tp) = CACHE(vd)[C_INDEX(SIZE(tp))];
814887Schin CACHE(vd)[C_INDEX(SIZE(tp))] = tp;
824887Schin }
834887Schin
844887Schin tp = BLOCK(seg->baddr);
854887Schin SEG(tp) = seg;
864887Schin SIZE(tp) = BUSY;
874887Schin }
884887Schin
894887Schin CLRLOCK(vd,0);
908462SApril.Chin@Sun.COM CLRINUSE(vd, inuse);
914887Schin return 0;
924887Schin }
934887Schin
944887Schin #endif
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