X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c3eaaf1a8869a1d2fb0364b7dc68e8b6d42ffec1..08aaedd334e95fc144248a31cf6411ecf1b08052:/src/xbt/ex.c diff --git a/src/xbt/ex.c b/src/xbt/ex.c index 7c4b18fa1a..4eeaba0f6a 100644 --- a/src/xbt/ex.c +++ b/src/xbt/ex.c @@ -1,125 +1,128 @@ -/* -** 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; } -void xbt_ex_setup_backtrace(xbt_ex_t *e) { -#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) +/* Change raw libc symbols to file names and line numbers */ +void xbt_ex_setup_backtrace(xbt_ex_t *e); + +void xbt_backtrace_current(xbt_ex_t *e) { +#ifdef HAVE_BACKTRACE + xbt_ex_setup_backtrace(e); +#endif +} + +void xbt_backtrace_display(xbt_ex_t *e) { +#ifdef HAVE_BACKTRACE int i; - /* to get the backtrace from the libc */ - 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 *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]; - - /* 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]); - } - - /* 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 { - char *p=bprintf("%s",backtrace[i]); - char *pos=strrchr(p,' '); - *pos = '\0'; - e->bt_strings[i] = bprintf("** At %s: ?? (%s)", addrs[i], p); - free(p); - } - free(addrs[i]); + + if (e->used == 0) { + fprintf(stderr,"(backtrace not set)\n"); + } else { + 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); } - free(addrs); - free(backtrace); - free(cmd); + + /* 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_current(void) { + xbt_ex_t e; + xbt_backtrace_current(&e); + xbt_backtrace_display(&e); +} + +#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) +# 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; @@ -133,7 +136,7 @@ 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); } @@ -145,26 +148,27 @@ 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) { +void xbt_ex_free(xbt_ex_t e) { int i; - if (e->msg) free(e->msg); - free(e->procname); - if (e->remote) { - 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(e->bt_strings[i]); - free(e->bt_strings); - e->bt_strings = NULL; + + if (e.bt_strings) { + for (i=0; i #include "xbt/ex.h" XBT_TEST_SUITE("xbt_ex","Exception Handling"); @@ -212,20 +210,33 @@ XBT_TEST_UNIT("controlflow",test_controlflow, "basic nested control flow") { THROW0(unknown_error,0,"something"); } CATCH (ex) { if (n != 3) - xbt_test_fail1("M3: n=%d (!= 1)", n); + xbt_test_fail1("M3: n=%d (!= 3)", n); + n++; + xbt_ex_free(ex); + } + n++; + TRY { + if (n != 5) + xbt_test_fail1("M2: n=%d (!= 5)", n); + n++; + THROW0(unknown_error,0,"something"); + } CATCH (ex) { + if (n != 6) + xbt_test_fail1("M3: n=%d (!= 6)", n); n++; RETHROW; + n++; } xbt_test_fail1("MX: n=%d (shouldn't reach this point)", n); } CATCH(ex) { - if (n != 4) - xbt_test_fail1("M4: n=%d (!= 4)", n); + if (n != 7) + xbt_test_fail1("M4: n=%d (!= 7)", n); n++; - xbt_ex_free(&ex); + xbt_ex_free(ex); } - if (n != 5) - xbt_test_fail1("M5: n=%d (!= 5)", n); + if (n != 8) + xbt_test_fail1("M5: n=%d (!= 8)", n); } XBT_TEST_UNIT("value",test_value,"exception value passing") { @@ -241,7 +252,7 @@ XBT_TEST_UNIT("value",test_value,"exception value passing") { xbt_test_fail1("value=%d (!= 2)", ex.value); if (strcmp(ex.msg,"toto")) xbt_test_fail1("message=%s (!= toto)", ex.msg); - xbt_ex_free(&ex); + xbt_ex_free(ex); } } @@ -264,7 +275,7 @@ XBT_TEST_UNIT("variables",test_variables,"variable value preservation") { /* r2 is allowed to be destroyed because not volatile */ if (v2 != 5678) xbt_test_fail1("v2=%d (!= 5678)", v2); - xbt_ex_free(&ex); + xbt_ex_free(ex); } } @@ -289,7 +300,7 @@ XBT_TEST_UNIT("cleanup",test_cleanup,"cleanup handling") { xbt_test_fail1("v1 = %d (!= 5678)", v1); if (!(ex.category == 1 && ex.value == 2 && !strcmp(ex.msg,"blah"))) xbt_test_fail0("unexpected exception contents"); - xbt_ex_free(&ex); + xbt_ex_free(ex); } if (!c) xbt_test_fail0("xbt_ex_free not executed"); @@ -333,9 +344,10 @@ 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 */ @@ -345,7 +357,7 @@ 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);