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 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 #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 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