1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin *                                                                      *
3da2e3ebdSchin *               This software is part of the ast package               *
4*b30d1939SAndy Fiddaman *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5da2e3ebdSchin *                      and is licensed under the                       *
6*b30d1939SAndy Fiddaman *                 Eclipse Public License, Version 1.0                  *
77c2fbfb3SApril Chin *                    by AT&T Intellectual Property                     *
8da2e3ebdSchin *                                                                      *
9da2e3ebdSchin *                A copy of the License is available at                 *
10*b30d1939SAndy Fiddaman *          http://www.eclipse.org/org/documents/epl-v10.html           *
11*b30d1939SAndy Fiddaman *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12da2e3ebdSchin *                                                                      *
13da2e3ebdSchin *              Information and Software Systems Research               *
14da2e3ebdSchin *                            AT&T Research                             *
15da2e3ebdSchin *                           Florham Park NJ                            *
16da2e3ebdSchin *                                                                      *
17da2e3ebdSchin *                 Glenn Fowler <gsf@research.att.com>                  *
18da2e3ebdSchin *                  David Korn <dgk@research.att.com>                   *
19da2e3ebdSchin *                   Phong Vo <kpv@research.att.com>                    *
20da2e3ebdSchin *                                                                      *
21da2e3ebdSchin ***********************************************************************/
22da2e3ebdSchin #pragma prototyped
23da2e3ebdSchin 
24da2e3ebdSchin /*
25da2e3ebdSchin  * install error message handler for fatal malloc exceptions
26da2e3ebdSchin  */
27da2e3ebdSchin 
28da2e3ebdSchin #include <ast.h>
29da2e3ebdSchin #include <error.h>
30da2e3ebdSchin #include <vmalloc.h>
31da2e3ebdSchin 
32da2e3ebdSchin #include "FEATURE/vmalloc"
33da2e3ebdSchin 
34da2e3ebdSchin #if _std_malloc
35da2e3ebdSchin 
36da2e3ebdSchin void
memfatal(void)37da2e3ebdSchin memfatal(void)
38da2e3ebdSchin {
39da2e3ebdSchin }
40da2e3ebdSchin 
41da2e3ebdSchin #else
42da2e3ebdSchin 
43da2e3ebdSchin /*
44da2e3ebdSchin  * print message and fail on VM_BADADDR,VM_NOMEM
45da2e3ebdSchin  */
46da2e3ebdSchin 
47da2e3ebdSchin static int
nomalloc(Vmalloc_t * region,int type,void * obj,Vmdisc_t * disc)48da2e3ebdSchin nomalloc(Vmalloc_t* region, int type, void* obj, Vmdisc_t* disc)
49da2e3ebdSchin {
50da2e3ebdSchin 	Vmstat_t	st;
51da2e3ebdSchin 
52da2e3ebdSchin 	NoP(disc);
53da2e3ebdSchin 	switch (type)
54da2e3ebdSchin 	{
55*b30d1939SAndy Fiddaman #ifdef VM_BADADDR
56da2e3ebdSchin 	case VM_BADADDR:
57da2e3ebdSchin 		error(ERROR_SYSTEM|3, "invalid pointer %p passed to free or realloc", obj);
58da2e3ebdSchin 		return(-1);
59*b30d1939SAndy Fiddaman #endif
60da2e3ebdSchin 	case VM_NOMEM:
61da2e3ebdSchin 		vmstat(region, &st);
62da2e3ebdSchin 		error(ERROR_SYSTEM|3, "storage allocator out of space on %lu byte request ( region %lu segments %lu busy %lu:%lu:%lu free %lu:%lu:%lu )", (size_t)obj, st.extent, st.n_seg, st.n_busy, st.s_busy, st.m_busy, st.n_free, st.s_free, st.m_free);
63da2e3ebdSchin 		return(-1);
64da2e3ebdSchin 	}
65da2e3ebdSchin 	return(0);
66da2e3ebdSchin }
67da2e3ebdSchin 
68da2e3ebdSchin /*
69da2e3ebdSchin  * initialize the malloc exception handler
70da2e3ebdSchin  */
71da2e3ebdSchin 
72da2e3ebdSchin void
memfatal(void)73da2e3ebdSchin memfatal(void)
74da2e3ebdSchin {
75da2e3ebdSchin 	Vmdisc_t*	disc;
76da2e3ebdSchin 
7734f9b3eeSRoland Mainz 	malloc(0);
7834f9b3eeSRoland Mainz 	if (disc = vmdisc(Vmregion, NiL))
79da2e3ebdSchin 		disc->exceptf = nomalloc;
80da2e3ebdSchin }
81da2e3ebdSchin 
82da2e3ebdSchin #endif
83