X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e40d8a3c090b9106352693e52ea61e63ecbbe93d..c2b67da53caa5f63793426f332a783d00fc5ccf2:/src/xbt/ex.c diff --git a/src/xbt/ex.c b/src/xbt/ex.c index b92e0c1caa..c93ea855b2 100644 --- a/src/xbt/ex.c +++ b/src/xbt/ex.c @@ -1,217 +1,124 @@ -/* -** 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, 2007 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 #include "portable.h" /* execinfo when available */ #include "xbt/ex.h" +#include "xbt/str.h" #include "xbt/module.h" /* xbt_binary_name */ -#include "xbt/ex_interface.h" +#include "xbt_modinter.h" /* backtrace initialization headers */ +#include "xbt/synchro.h" /* xbt_thread_self */ #include "gras/Virtu/virtu_interface.h" /* gras_os_myname */ +#include "xbt/ex_interface.h" + +#undef HAVE_BACKTRACE +#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) +# define HAVE_BACKTRACE 1 /* Hello linux box */ +#endif + +#if defined(WIN32) && defined(_M_IX86) && !defined(__GNUC__) +# define HAVE_BACKTRACE 1 /* Hello x86 windows box */ +#endif + + +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_ex,xbt,"Exception mecanism"); /* default __ex_ctx callback function */ ex_ctx_t *__xbt_ex_ctx_default(void) { + /* Don't scream: this is a default which is never used (so, yes, + there is one setjump container by running entity). + + This default gets overriden in xbt/xbt_os_thread.c so that it works in + real life and in simulation when using threads to implement the simulation + processes (ie, with pthreads and on windows). + + It also gets overriden in xbt/context.c when using ucontextes (as well as + in Java for now, but after the java overhaul, it will get cleaned out) + */ static ex_ctx_t ctx = XBT_CTX_INITIALIZER; return &ctx; } +/* Change raw libc symbols to file names and line numbers */ +void xbt_ex_setup_backtrace(xbt_ex_t *e); + +void xbt_backtrace_display(xbt_ex_t *e) { + xbt_ex_setup_backtrace(e); + +#ifdef HAVE_BACKTRACE + if (e->used == 0) { + fprintf(stderr,"(backtrace not set)\n"); + } else { + int i; + + fprintf(stderr,"Backtrace (displayed in thread %p):\n", + (void*)xbt_thread_self()); + for (i=1; iused; i++) /* no need to display "xbt_display_backtrace" */ + fprintf(stderr,"---> %s\n",e->bt_strings[i] +4); + } + + /* don't fool xbt_ex_free with uninitialized msg field */ + e->msg=NULL; + e->remote=0; + xbt_ex_free(*e); +#else + + ERROR0("No backtrace on this arch"); +#endif +} /** \brief show the backtrace of the current point (lovely while debuging) */ -void xbt_backtrace_display(void) { -#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) +void xbt_backtrace_display_current(void) { xbt_ex_t e; - int i; - - e.used = backtrace((void**)e.bt,XBT_BACKTRACE_SIZE); - e.bt_strings = NULL; - xbt_ex_setup_backtrace(&e); - for (i=1; ibt, e->used); - - /* To build the commandline of addr2line */ - char *cmd = xbt_new(char,strlen(ADDR2LINE)+strlen(xbt_binary_name)+20*e->used); - char *curr=cmd; - - /* to extract the addresses from the backtrace */ - char **addrs=xbt_new(char*,e->used); - char buff[256],*p; - - /* To read the output of addr2line */ - FILE *pipe; - char line_func[1024],line_pos[1024]; - - /* size (in char) of pointers on this arch */ - int addr_len=0; - - /* build the commandline */ - curr += sprintf(curr,"%s -f -e %s ",ADDR2LINE,xbt_binary_name); - for (i=0; iused;i++) { - /* retrieve this address */ - snprintf(buff,256,"%s",strchr(backtrace[i],'[')+1); - p=strchr(buff,']'); - *p='\0'; - addrs[i]=bprintf("%s",buff); - - /* Add it to the command line args */ - curr+=sprintf(curr,"%s ",addrs[i]); - } - addr_len = strlen(addrs[0]); - - /* parse the output and build a new backtrace */ - e->bt_strings = xbt_new(char*,e->used); - - pipe = popen(cmd, "r"); - // xbt_assert(pipe);//,"Cannot fork addr2line to display the backtrace"); - for (i=0; iused; 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)) { - e->bt_strings[i] = bprintf("** At %s: %s (%s)", - addrs[i], 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; - char *p,*p2; - - char *subcmd; - FILE *subpipe; - int found=0; - - /* let's look for the offset of this library in our addressing space */ - maps_name=bprintf("/proc/%d/maps",(int)getpid()); - maps=fopen(maps_name,"r"); - - addr=strtol(addrs[i]+2, NULL,16); - - while (!found) { - if (fgets(maps_buff,512,maps) == NULL) - break; - offset_save = offset; - offset=strtol(maps_buff,NULL,16); - if (offset > addr) - found=1; - } - - 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. - 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); - - /* Got it. We have our new address. Let's get the library path and we - are set */ - p = xbt_strdup(backtrace[i]); - p2 = strrchr(p,'('); - if (p2) *p2= '\0'; - p2 = strrchr(p,' '); - if (p2) *p2= '\0'; - - /* Here we go, fire an addr2line up */ - subcmd = bprintf("%s -f -e %s %s",ADDR2LINE,p, addrs[i]); - free(p); - subpipe = popen(subcmd,"r"); - 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); - } 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); - } - } - free(addrs[i]); - } - pclose(pipe); - free(addrs); - free(backtrace); - free(cmd); +# include "backtrace_linux.c" +#elif (defined(WIN32) && defined (_M_IX86)) && !defined(__GNUC__) +# include "backtrace_windows.c" +#else +# include "backtrace_dummy.c" #endif -} /** @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) + thrower = bprintf(" on host %s(%d)",e->host,e->pid); fprintf(stderr, - "** SimGrid: UNCAUGHT EXCEPTION on %s: category: %s; value: %d\n" + "** SimGrid: UNCAUGHT EXCEPTION received on %s(%d): category: %s; value: %d\n" "** %s\n" - "** Thrown by %s%s%s", - gras_os_myname(), + "** Thrown by %s()%s\n", + gras_os_myname(),(*xbt_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"); + CRITICAL1("%s",e->msg); + + if (thrower) + free(thrower); if (!e->remote && !e->bt_strings) xbt_ex_setup_backtrace(e); -#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) +#ifdef HAVE_BACKTRACE /* We have everything to build neat backtraces */ { int i; @@ -237,8 +144,9 @@ 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; +XBT_EXPORT_NO_IMPORT(ex_ctx_cb_t) __xbt_ex_ctx = &__xbt_ex_ctx_default; +XBT_EXPORT_NO_IMPORT(ex_term_cb_t) __xbt_ex_terminate = &__xbt_ex_terminate_default; + void xbt_ex_free(xbt_ex_t e) { int i; @@ -256,7 +164,7 @@ 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 */ @@ -274,15 +182,9 @@ const char * xbt_ex_catname(xbt_errcat_t cat) { } } -#ifndef HAVE_EXECINFO_H -/* dummy implementation. We won't use the result, but ex.h needs it to be defined */ -int backtrace (void **__array, int __size) { - return 0; -} - -#endif #ifdef SIMGRID_TEST +#include #include "xbt/ex.h" XBT_TEST_SUITE("xbt_ex","Exception Handling"); @@ -438,9 +340,10 @@ 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 */ @@ -450,7 +353,7 @@ 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);