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
36 void
memfatal(void)37 memfatal(void)
38 {
39 }
40
41 #else
42
43 /*
44 * print message and fail on VM_BADADDR,VM_NOMEM
45 */
46
47 static int
nomalloc(Vmalloc_t * region,int type,void * obj,Vmdisc_t * disc)48 nomalloc(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
72 void
memfatal(void)73 memfatal(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