X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/cacec1086365a2ab8656e6b33a4ee945ea10e26a..5b9cf50be0a43c599b20b1ed28341971a571d70d:/src/xbt/ex.c diff --git a/src/xbt/ex.c b/src/xbt/ex.c index c1d254653b..29941d5282 100644 --- a/src/xbt/ex.c +++ b/src/xbt/ex.c @@ -1,33 +1,15 @@ -/* -** OSSP ex - Exception Handling (modified to fit into SimGrid) -** Copyright (c) 2005 Martin Quinson -** Copyright (c) 2002-2004 Ralf S. Engelschall -** Copyright (c) 2002-2004 The OSSP Project -** Copyright (c) 2002-2004 Cable & Wireless -** -** This file is part of OSSP ex, an exception handling library -** which can be found at http://www.ossp.org/pkg/lib/ex/. -** -** Permission to use, copy, modify, and distribute this software for -** any purpose with or without fee is hereby granted, provided that -** the above copyright notice and this permission notice appear in all -** copies. -** -** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED -** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF -** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. -** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR -** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF -** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, -** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT -** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -** SUCH DAMAGE. -** -** ex.c: exception handling (compiler part) -*/ +/* $Id$ */ + +/* ex - Exception Handling (modified to fit into SimGrid from OSSP version) */ + +/* Copyright (c) 2005-2006 Martin Quinson */ +/* Copyright (c) 2002-2004 Ralf S. Engelschall */ +/* Copyright (c) 2002-2004 The OSSP Project */ +/* Copyright (c) 2002-2004 Cable & Wireless */ +/* All rights reserved. */ + +/* This program is free software; you can redistribute it and/or modify it + * under the terms of the license (GNU LGPL) which comes with this package. */ #include #include @@ -66,10 +48,11 @@ void xbt_backtrace_display(void) { e.remote=0; xbt_ex_free(e); #else - fprintf(stderr,"No backtrace on this arch"); + ERROR0("No backtrace on this arch"); #endif } + void xbt_ex_setup_backtrace(xbt_ex_t *e) { #if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) int i; @@ -77,7 +60,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { char **backtrace = backtrace_symbols (e->bt, e->used); /* To build the commandline of addr2line */ - char *cmd = xbt_new(char,strlen(ADDR2LINE)+strlen(xbt_binary_name)+20*e->used); + char *cmd = xbt_new(char,strlen(ADDR2LINE)+25+strlen(xbt_binary_name)+32*e->used); char *curr=cmd; /* to extract the addresses from the backtrace */ @@ -90,16 +73,22 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { /* size (in char) of pointers on this arch */ int addr_len=0; - + + /* Some arches only have stubs of backtrace, no implementation (hppa comes to mind) */ + if (!e->used) + return; + /* build the commandline */ curr += sprintf(curr,"%s -f -e %s ",ADDR2LINE,xbt_binary_name); for (i=0; iused;i++) { /* retrieve this address */ + DEBUG2("Retrieving address number %d from '%s'", i, backtrace[i]); snprintf(buff,256,"%s",strchr(backtrace[i],'[')+1); p=strchr(buff,']'); *p='\0'; - addrs[i]=bprintf("%s",buff); - + addrs[i]=bprintf("%s", buff); + DEBUG3("Set up a new address: %d, '%s'(%p)", i, addrs[i], addrs[i]); + /* Add it to the command line args */ curr+=sprintf(curr,"%s ",addrs[i]); } @@ -108,18 +97,22 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { /* parse the output and build a new backtrace */ e->bt_strings = xbt_new(char*,e->used); + VERB1("Fire a first command: '%s'", cmd); pipe = popen(cmd, "r"); if (!pipe) { CRITICAL0("Cannot fork addr2line to display the backtrace"); abort(); } + for (i=0; iused; i++) { + DEBUG2("Looking for symbol %d, addr = '%s'", i, addrs[i]); fgets(line_func,1024,pipe); line_func[strlen(line_func)-1]='\0'; fgets(line_pos,1024,pipe); line_pos[strlen(line_pos)-1]='\0'; if (strcmp("??",line_func)) { + DEBUG2("Found static symbol %s() at %s", line_func, line_pos); e->bt_strings[i] = bprintf("** In %s() at %s (static symbol)", line_func,line_pos); } else { /* Damn. The symbol is in a dynamic library. Let's get wild */ @@ -127,7 +120,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { FILE *maps; char maps_buff[512]; - long int addr,offset; + long int addr,offset=0; char *p,*p2; char *subcmd; @@ -165,12 +158,16 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { DEBUG4("%#lx %s [%#lx-%#lx]", addr, found? "in":"out of",first,last); } - if (!found) - CRITICAL0("Problem while reading the maps file"); - fclose(maps); free(maps_name); + if (!found) { + VERB0("Problem while reading the maps file. Following backtrace will be mangled."); + DEBUG1("No dynamic. Static symbol: %s", backtrace[i]); + e->bt_strings[i] = bprintf("** In ?? (%s)", backtrace[i]); + continue; + } + /* Ok, Found the offset of the maps line containing the searched symbol. We now need to substract this from the address we got from backtrace. */ @@ -185,7 +182,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { p2 = strrchr(p,'('); if (p2) *p2= '\0'; p2 = strrchr(p,' '); - if (p2) *p2= '\0'; + if(p2) *p2= '\0'; /* Here we go, fire an addr2line up */ subcmd = bprintf("%s -f -e %s %s",ADDR2LINE,p, addrs[i]); @@ -205,9 +202,11 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { /* check whether the trick worked */ if (strcmp("??",line_func)) { + DEBUG2("Found dynamic symbol %s() at %s", line_func, line_pos); e->bt_strings[i] = bprintf("** In %s() at %s (dynamic symbol)", line_func,line_pos); } else { /* damn, nothing to do here. Let's print the raw address */ + DEBUG1("Dynamic symbol not found. Raw address = %s", backtrace[i]); e->bt_strings[i] = bprintf("** In ?? (%s)", backtrace[i]); } } @@ -227,10 +226,11 @@ void xbt_ex_display(xbt_ex_t *e) { if (e->remote) bprintf(" on host %s(%ld)",e->host,e->pid); + CRITICAL1("%s",e->msg); fprintf(stderr, "** SimGrid: UNCAUGHT EXCEPTION received on %s(%ld): category: %s; value: %d\n" "** %s\n" - "** Thrown by %s()%s", + "** Thrown by %s()%s\n", gras_os_myname(),gras_os_getpid(), xbt_ex_catname(e->category), e->value, e->msg, e->procname,thrower?thrower:" in this process"); @@ -267,8 +267,9 @@ void __xbt_ex_terminate_default(xbt_ex_t *e) { } /* the externally visible API */ -ex_ctx_cb_t __xbt_ex_ctx = &__xbt_ex_ctx_default; -ex_term_cb_t __xbt_ex_terminate = &__xbt_ex_terminate_default; +ex_ctx_cb_t XBT_PUBLIC_DATA __xbt_ex_ctx = &__xbt_ex_ctx_default; +ex_term_cb_t XBT_PUBLIC_DATA __xbt_ex_terminate = &__xbt_ex_terminate_default; + void xbt_ex_free(xbt_ex_t e) { int i; @@ -286,7 +287,7 @@ void xbt_ex_free(xbt_ex_t e) { free((char*)e.bt_strings[i]); free((char **)e.bt_strings); } -// memset(e,0,sizeof(xbt_ex_t)); + /* memset(e,0,sizeof(xbt_ex_t)); */ } /** \brief returns a short name for the given exception category */ @@ -313,6 +314,7 @@ int backtrace (void **__array, int __size) { #endif #ifdef SIMGRID_TEST +#include #include "xbt/ex.h" XBT_TEST_SUITE("xbt_ex","Exception Handling"); @@ -468,9 +470,10 @@ static void bad_example(void) { /* end_of_bad_example */ } #endif - +typedef struct {char *first;} global_context_t; + static void good_example(void) { - struct {char*first;} *globalcontext; + global_context_t *global_context=malloc(sizeof(global_context_t)); xbt_ex_t ex; /* GOOD_EXAMPLE */ @@ -480,7 +483,7 @@ static void good_example(void) { char * volatile /*03*/ cp3 = NULL /*02*/; TRY { cp1 = mallocex(SMALLAMOUNT); - globalcontext->first = cp1; + global_context->first = cp1; cp1 = NULL /*05 give away*/; cp2 = mallocex(TOOBIG); cp3 = mallocex(SMALLAMOUNT);