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att
GitHub Repository: att/ast
 Path: blob/master/src/lib/libast/vmalloc/vmwalk.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1985-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#if defined(_UWIN) && defined(_BLD_ast)

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void _STUB_vmwalk(){}

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#else

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#include	"vmhdr.h"

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/*	Walks all segments created in region(s)

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**

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**	Written by Kiem-Phong Vo, [email protected] (02/08/96)

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*/

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#if __STD_C

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int vmwalk(Vmalloc_t* vm, int(*segf)(Vmalloc_t*, Void_t*, size_t, Vmdisc_t*, Void_t*), Void_t* handle )

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#else

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int vmwalk(vm, segf, handle)

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Vmalloc_t*	vm;

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int(*		segf)(/* Vmalloc_t*, Void_t*, size_t, Vmdisc_t*, Void_t* */);

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Void_t*		handle;

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#endif

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{	

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	reg Seg_t	*seg;

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	reg int		rv = 0;

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	if(!vm)

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	{	_vmlock(NIL(Vmalloc_t*), 1);

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		for(vm = Vmheap; vm; vm = vm->next)

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		{	SETLOCK(vm, 0);

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			for(seg = vm->data->seg; seg; seg = seg->next)

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				if((rv = (*segf)(vm, seg->addr, seg->extent, vm->disc, handle)) < 0 )

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					break;

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			CLRLOCK(vm, 0);

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		}

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		_vmlock(NIL(Vmalloc_t*), 0);

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	}

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	else

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	{	SETLOCK(vm, 0);

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		for(seg = vm->data->seg; seg; seg = seg->next)

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			if((rv = (*segf)(vm, seg->addr, seg->extent, vm->disc, handle)) < 0 )

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				break;

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		CLRLOCK(vm, 0);

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	}

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	return rv;

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}

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#endif

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