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