1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 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 36 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 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 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 70 void 71 memfatal(void) 72 { 73 Vmdisc_t* disc; 74 75 if (disc = vmdisc(Vmheap, NiL)) 76 disc->exceptf = nomalloc; 77 } 78 79 #endif 80