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