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Added a cleanup function for the (un)shared region list, so that it does

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not grow forever.
This commit is contained in:
manu 2002-10-23 21:30:46 +00:00
parent 13a3d2ed82
commit f8aec0fd04
1 changed files with 51 additions and 2 deletions
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53
sys/compat/irix/irix_prctl.c
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@ -1,4 +1,4 @@
/* $NetBSD: irix_prctl.c,v 1.18 2002/10/14 21:14:25 manu Exp $ */
/* $NetBSD: irix_prctl.c,v 1.19 2002/10/23 21:30:46 manu Exp $ */
/*-
* Copyright (c) 2001-2002 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: irix_prctl.c,v 1.18 2002/10/14 21:14:25 manu Exp $");
__KERNEL_RCSID(0, "$NetBSD: irix_prctl.c,v 1.19 2002/10/23 21:30:46 manu Exp $");
#include <sys/errno.h>
#include <sys/types.h>
@ -85,6 +85,7 @@ static struct irix_shared_regions_rec *irix_isrr_create __P((vaddr_t,
#ifdef DEBUG_IRIX
static void irix_isrr_debug __P((struct proc *));
#endif
static void irix_isrr_cleanup __P((struct proc *));
int
irix_sys_prctl(p, v, retval)
@ -851,6 +852,10 @@ irix_isrr_insert(start, len, shared, p)
/* Nothing more to do, exit now */
#ifdef DEBUG_IRIX
irix_isrr_debug(p);
#endif
irix_isrr_cleanup(p);
#ifdef DEBUG_IRIX
irix_isrr_debug(p);
#endif
return;
}
@ -901,10 +906,54 @@ irix_isrr_insert(start, len, shared, p)
}
#ifdef DEBUG_IRIX
irix_isrr_debug(p);
#endif
irix_isrr_cleanup(p);
#ifdef DEBUG_IRIX
irix_isrr_debug(p);
#endif
return;
}
/*
* Cleanup the region list by
* (1) removing regions with length 0, and
* (2) merging contiguous regions with the same status
*/
static void
irix_isrr_cleanup(p)
struct proc *p;
{
struct irix_emuldata *ied = (struct irix_emuldata *)p->p_emuldata;
struct irix_shared_regions_rec *isrr;
struct irix_shared_regions_rec *new_isrr;
isrr = LIST_FIRST(&ied->ied_shared_regions);
do {
new_isrr = LIST_NEXT(isrr, isrr_list);
if (isrr->isrr_len == 0) {
LIST_REMOVE(isrr, isrr_list);
free(isrr, M_EMULDATA);
isrr = new_isrr;
if (isrr == NULL)
break;
}
if (new_isrr == NULL)
break;
if (isrr->isrr_shared == new_isrr->isrr_shared) {
isrr->isrr_len += new_isrr->isrr_len;
new_isrr->isrr_len = 0;
}
isrr = new_isrr;
} while (1);
return;
}
#ifdef DEBUG_IRIX
static void
irix_isrr_debug(p)