1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1985-2010 AT&T Intellectual Property * 5* and is licensed under the * 6* Common Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.opensource.org/licenses/cpl1.0.txt * 11* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 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 case VM_BADADDR: 56 error(ERROR_SYSTEM|3, "invalid pointer %p passed to free or realloc", obj); 57 return(-1); 58 case VM_NOMEM: 59 vmstat(region, &st); 60 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); 61 return(-1); 62 } 63 return(0); 64} 65 66/* 67 * initialize the malloc exception handler 68 */ 69 70void 71memfatal(void) 72{ 73 Vmdisc_t* disc; 74 75 malloc(0); 76 if (disc = vmdisc(Vmregion, NiL)) 77 disc->exceptf = nomalloc; 78} 79 80#endif 81