xref: /onnv-gate/usr/src/lib/libast/common/vmalloc/vmstat.c (revision 12068:08a39a083754)
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_vmstat()244887Schin void _STUB_vmstat(){}
254887Schin 
264887Schin #else
274887Schin 
284887Schin #include	"vmhdr.h"
294887Schin 
304887Schin /*	Get statistics from a region.
314887Schin **
324887Schin **	Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
334887Schin */
344887Schin 
354887Schin #if __STD_C
vmstat(Vmalloc_t * vm,Vmstat_t * st)364887Schin int vmstat(Vmalloc_t* vm, Vmstat_t* st)
374887Schin #else
384887Schin int vmstat(vm, st)
394887Schin Vmalloc_t*	vm;
404887Schin Vmstat_t*	st;
414887Schin #endif
424887Schin {
434887Schin 	reg Seg_t*	seg;
444887Schin 	reg Block_t	*b, *endb;
454887Schin 	reg size_t	s = 0;
468462SApril.Chin@Sun.COM 	reg Vmdata_t*	vd = vm ? vm->data : Vmregion->data;
478462SApril.Chin@Sun.COM 	reg int		inuse;
484887Schin 
498462SApril.Chin@Sun.COM 	SETINUSE(vd, inuse);
504887Schin 	if(!st)
518462SApril.Chin@Sun.COM 	{	CLRINUSE(vd, inuse);
528462SApril.Chin@Sun.COM 		return inuse ? 1 : 0;
538462SApril.Chin@Sun.COM 	}
544887Schin 	if(!(vd->mode&VM_TRUST))
554887Schin 	{	if(ISLOCK(vd,0))
568462SApril.Chin@Sun.COM 		{	CLRINUSE(vd, inuse);
574887Schin 			return -1;
588462SApril.Chin@Sun.COM 		}
594887Schin 		SETLOCK(vd,0);
604887Schin 	}
614887Schin 
624887Schin 	st->n_busy = st->n_free = 0;
634887Schin 	st->s_busy = st->s_free = st->m_busy = st->m_free = 0;
644887Schin 	st->n_seg = 0;
654887Schin 	st->extent = 0;
664887Schin 
674887Schin 	if(vd->mode&VM_MTLAST)
684887Schin 		st->n_busy = 0;
694887Schin 	else if((vd->mode&VM_MTPOOL) && (s = vd->pool) > 0)
704887Schin 	{	s = ROUND(s,ALIGN);
714887Schin 		for(b = vd->free; b; b = SEGLINK(b))
724887Schin 			st->n_free += 1;
734887Schin 	}
744887Schin 
754887Schin 	for(seg = vd->seg; seg; seg = seg->next)
764887Schin 	{	st->n_seg += 1;
774887Schin 		st->extent += seg->extent;
784887Schin 
794887Schin 		b = SEGBLOCK(seg);
804887Schin 		endb = BLOCK(seg->baddr);
814887Schin 
824887Schin 		if(vd->mode&(VM_MTDEBUG|VM_MTBEST|VM_MTPROFILE))
834887Schin 		{	while(b < endb)
844887Schin 			{	s = SIZE(b)&~BITS;
854887Schin 				if(ISJUNK(SIZE(b)) || !ISBUSY(SIZE(b)))
864887Schin 				{	if(s > st->m_free)
874887Schin 						st->m_free = s;
884887Schin 					st->s_free += s;
894887Schin 					st->n_free += 1;
904887Schin 				}
914887Schin 				else	/* get the real size */
924887Schin 				{	if(vd->mode&VM_MTDEBUG)
934887Schin 						s = DBSIZE(DB2DEBUG(DATA(b)));
944887Schin 					else if(vd->mode&VM_MTPROFILE)
954887Schin 						s = PFSIZE(DATA(b));
964887Schin 					if(s > st->m_busy)
974887Schin 						st->m_busy = s;
984887Schin 					st->s_busy += s;
994887Schin 					st->n_busy += 1;
1004887Schin 				}
1014887Schin 
1024887Schin 				b = (Block_t*)((Vmuchar_t*)DATA(b) + (SIZE(b)&~BITS) );
1034887Schin 			}
1044887Schin 		}
1054887Schin 		else if(vd->mode&VM_MTLAST)
1064887Schin 		{	if((s = seg->free ? (SIZE(seg->free) + sizeof(Head_t)) : 0) > 0)
1074887Schin 			{	st->s_free += s;
1084887Schin 				st->n_free += 1;
1094887Schin 			}
1104887Schin 			if((s = ((char*)endb - (char*)b) - s) > 0)
1114887Schin 			{	st->s_busy += s;
1124887Schin 				st->n_busy += 1;
1134887Schin 			}
1144887Schin 		}
1154887Schin 		else if((vd->mode&VM_MTPOOL) && s > 0)
1164887Schin 		{	if(seg->free)
1174887Schin 				st->n_free += (SIZE(seg->free)+sizeof(Head_t))/s;
1184887Schin 			st->n_busy += ((seg->baddr - (Vmuchar_t*)b) - sizeof(Head_t))/s;
1194887Schin 		}
1204887Schin 	}
1214887Schin 
1224887Schin 	if((vd->mode&VM_MTPOOL) && s > 0)
1234887Schin 	{	st->n_busy -= st->n_free;
1244887Schin 		if(st->n_busy > 0)
1254887Schin 			st->s_busy = (st->m_busy = vd->pool)*st->n_busy;
1264887Schin 		if(st->n_free > 0)
1274887Schin 			st->s_free = (st->m_free = vd->pool)*st->n_free;
1284887Schin 	}
1294887Schin 
1304887Schin 	CLRLOCK(vd,0);
1318462SApril.Chin@Sun.COM 	CLRINUSE(vd, inuse);
1328462SApril.Chin@Sun.COM 	return inuse ? 1 : 0;
1334887Schin }
1344887Schin 
1354887Schin #endif
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