X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/25a607b11c442099b3ef353df545d2f0c30f97d5..3e33945312989c2b5a84a31efafd429185ece096:/src/xbt/ex.c diff --git a/src/xbt/ex.c b/src/xbt/ex.c index 7e6e63fb65..48ab1de9f1 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 @@ -39,6 +21,9 @@ #include "gras/Virtu/virtu_interface.h" /* gras_os_myname */ +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_ex,xbt,"Exception mecanism"); + + /* default __ex_ctx callback function */ ex_ctx_t *__xbt_ex_ctx_default(void) { static ex_ctx_t ctx = XBT_CTX_INITIALIZER; @@ -48,7 +33,7 @@ ex_ctx_t *__xbt_ex_ctx_default(void) { /** \brief show the backtrace of the current point (lovely while debuging) */ -void xbt_display_backtrace(void) { +void xbt_backtrace_display(void) { #if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) xbt_ex_t e; int i; @@ -61,9 +46,9 @@ void xbt_display_backtrace(void) { e.msg=NULL; e.remote=0; - xbt_ex_free(&e); + xbt_ex_free(e); #else - fprintf(stderr,"No backtrace on this arch"); + ERROR0("No backtrace on this arch"); #endif } @@ -87,7 +72,11 @@ 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++) { @@ -106,7 +95,10 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { e->bt_strings = xbt_new(char*,e->used); pipe = popen(cmd, "r"); - // xbt_assert(pipe);//,"Cannot fork addr2line to display the backtrace"); + if (!pipe) { + CRITICAL0("Cannot fork addr2line to display the backtrace"); + abort(); + } for (i=0; iused; i++) { fgets(line_func,1024,pipe); line_func[strlen(line_func)-1]='\0'; @@ -114,15 +106,14 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { line_pos[strlen(line_pos)-1]='\0'; if (strcmp("??",line_func)) { - e->bt_strings[i] = bprintf("** At %s: %s (%s)", - addrs[i], 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 */ char *maps_name; FILE *maps; char maps_buff[512]; - long int addr,offset,offset_save; + long int addr,offset=0; char *p,*p2; char *subcmd; @@ -133,28 +124,49 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { maps_name=bprintf("/proc/%d/maps",(int)getpid()); maps=fopen(maps_name,"r"); - addr=strtol(addrs[i]+2, NULL,16); + sscanf(addrs[i],"%lx",&addr); + sprintf(maps_buff,"%#lx",addr); + + if (strcmp(addrs[i],maps_buff)) { + CRITICAL2("Cannot parse backtrace address '%s' (addr=%#lx)", + addrs[i], addr); + } + DEBUG2("addr=%s (as string) =%#lx (as number)",addrs[i],addr); while (!found) { + long int first, last; if (fgets(maps_buff,512,maps) == NULL) break; - offset_save = offset; - offset=strtol(maps_buff,NULL,16); - if (offset > addr) + if (i==0) { + maps_buff[strlen(maps_buff) -1]='\0'; + DEBUG1("map line: %s", maps_buff); + } + sscanf(maps_buff,"%lx",&first); + p=strchr(maps_buff,'-')+1; + sscanf(p,"%lx",&last); + if (first < addr && addr < last) { + offset = first; found=1; + } + DEBUG4("%#lx %s [%#lx-%#lx]", + addr, found? "in":"out of",first,last); } - fclose(maps); free(maps_name); - /* Ok, the maps line we just read is beyond the searched symbol. Got it, - the symbol is in previous map, which offset is in offset_save. + if (!found) { + VERB0("Problem while reading the maps file. Following backtrace will be mangled."); + 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. */ - offset=offset_save; free(addrs[i]); addrs[i] = bprintf("0x%0*lx",addr_len-2,addr-offset); + DEBUG2("offset=%#lx new addr=%s",offset,addrs[i]); /* Got it. We have our new address. Let's get the library path and we are set */ @@ -167,24 +179,25 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { /* Here we go, fire an addr2line up */ subcmd = bprintf("%s -f -e %s %s",ADDR2LINE,p, addrs[i]); free(p); + VERB1("Fire a new command: '%s'",subcmd); subpipe = popen(subcmd,"r"); + if (!subpipe) { + CRITICAL0("Cannot fork addr2line to display the backtrace"); + abort(); + } fgets(line_func,1024,subpipe); line_func[strlen(line_func)-1]='\0'; fgets(line_pos,1024,subpipe); line_pos[strlen(line_pos)-1]='\0'; pclose(subpipe); + free(subcmd); /* check whether the trick worked */ if (strcmp("??",line_func)) { - e->bt_strings[i] = bprintf("** At %s: %s (%s)", - addrs[i], 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 */ - p = bprintf("%s",backtrace[i]); - p2 = strrchr(p,' '); - *p2= '\0'; - e->bt_strings[i] = bprintf("** At %s: ?? (%s)", addrs[i], p); - free(p); + e->bt_strings[i] = bprintf("** In ?? (%s)", backtrace[i]); } } free(addrs[i]); @@ -198,14 +211,22 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { /** @brief shows an exception content and the associated stack if available */ void xbt_ex_display(xbt_ex_t *e) { + char *thrower=NULL; + if (e->remote) + bprintf(" on host %s(%ld)",e->host,e->pid); + + CRITICAL1("%s",e->msg); fprintf(stderr, - "** SimGrid: UNCAUGHT EXCEPTION on %s: category: %s; value: %d\n" + "** SimGrid: UNCAUGHT EXCEPTION received on %s(%ld): category: %s; value: %d\n" "** %s\n" - "** Thrown by %s%s%s", - gras_os_myname(), + "** Thrown by %s()%s\n", + gras_os_myname(),gras_os_getpid(), xbt_ex_catname(e->category), e->value, e->msg, - e->procname, (e->host?"@":""),(e->host?e->host:"")); + e->procname,thrower?thrower:" in this process"); + + if (thrower) + free(thrower); if (!e->remote && !e->bt_strings) xbt_ex_setup_backtrace(e); @@ -224,7 +245,7 @@ void xbt_ex_display(xbt_ex_t *e) { fprintf(stderr," at %s:%d:%s (no backtrace available on that arch)\n", e->file,e->line,e->func); #endif - xbt_ex_free(e); + xbt_ex_free(*e); } @@ -239,23 +260,23 @@ void __xbt_ex_terminate_default(xbt_ex_t *e) { ex_ctx_cb_t __xbt_ex_ctx = &__xbt_ex_ctx_default; ex_term_cb_t __xbt_ex_terminate = &__xbt_ex_terminate_default; -void xbt_ex_free(xbt_ex_t *e) { +void xbt_ex_free(xbt_ex_t e) { int i; - if (e->msg) free(e->msg); - if (e->remote) { - free(e->procname); - free(e->file); - free(e->func); - free(e->host); + if (e.msg) free(e.msg); + if (e.remote) { + free(e.procname); + free(e.file); + free(e.func); + free(e.host); } - if (e->bt_strings) { - for (i=0; iused; i++) - free((char*)e->bt_strings[i]); - free((char **)e->bt_strings); + if (e.bt_strings) { + for (i=0; ifirst = cp1; + global_context->first = cp1; cp1 = NULL /*05 give away*/; cp2 = mallocex(TOOBIG); cp3 = mallocex(SMALLAMOUNT);