X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/ac9b849c157154d379961e139bf8e1a436eb0bc1..4725d7a4bc5ac1fdae3e86222cdc23eaaf6fb226:/src/xbt/ex.c diff --git a/src/xbt/ex.c b/src/xbt/ex.c index 18de35efee..7c0714fcf8 100644 --- a/src/xbt/ex.c +++ b/src/xbt/ex.c @@ -1,73 +1,138 @@ -/* -** 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_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) { - static ex_ctx_t ctx = XBT_CTX_INITIALIZER; + /* 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; - return &ctx; + 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_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" - "** %s\n" - "** Thrown by %s%s%s at %s:%d:%s\n", - gras_os_myname(), - xbt_ex_catname(e->category), e->value, e->msg, - e->procname, (e->host?"@":""),(e->host?e->host:""),//localhost"), - e->file,e->line,e->func); - -#ifdef HAVE_EXECINFO_H - { - int i; + "** SimGrid: UNCAUGHT EXCEPTION received on %s(%d): category: %s; value: %d\n" + "** %s\n" + "** Thrown by %s()%s\n", + gras_os_myname(),(*xbt_getpid)(), + xbt_ex_catname(e->category), e->value, e->msg, + 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); + +#ifdef HAVE_BACKTRACE + /* We have everything to build neat backtraces */ + { + int i; - fprintf(stderr,"** Backtrace:\n"); - if (!e->bt_strings) - e->bt_strings = backtrace_symbols (e->bt, e->used); + fprintf(stderr,"\n"); + for (i=0; iused; i++) + fprintf(stderr,"%s\n",e->bt_strings[i]); - for (i = 0; i < e->used; i++) - printf (" %s\n", e->bt_strings[i]); - } + } +#else + fprintf(stderr," at %s:%d:%s (no backtrace available on that arch)\n", + e->file,e->line,e->func); #endif + xbt_ex_free(*e); } @@ -79,162 +144,170 @@ 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; if (e.msg) free(e.msg); - free(e.procname); - if (e.host) { + if (e.remote) { + free(e.procname); free(e.file); free(e.func); - for (i=0; i #include "xbt/ex.h" XBT_TEST_SUITE("xbt_ex","Exception Handling"); XBT_TEST_UNIT("controlflow",test_controlflow, "basic nested control flow") { - xbt_ex_t ex; - volatile int n=1; + xbt_ex_t ex; + volatile int n=1; - xbt_test_add0("basic nested control flow"); + xbt_test_add0("basic nested control flow"); + TRY { + if (n != 1) + xbt_test_fail1("M1: n=%d (!= 1)", n); + n++; TRY { - if (n != 1) - xbt_test_fail1("M1: n=%d (!= 1)", n); - n++; - TRY { - if (n != 2) - xbt_test_fail1("M2: n=%d (!= 2)", n); - n++; - THROW0(unknown_error,0,"something"); - } CATCH (ex) { - if (n != 3) - xbt_test_fail1("M3: n=%d (!= 1)", n); - n++; - RETHROW; - } - xbt_test_fail1("MX: n=%d (shouldn't reach this point)", n); + if (n != 2) + xbt_test_fail1("M2: n=%d (!= 2)", n); + n++; + THROW0(unknown_error,0,"something"); + } CATCH (ex) { + if (n != 3) + xbt_test_fail1("M3: n=%d (!= 3)", n); + n++; + xbt_ex_free(ex); } - CATCH(ex) { - if (n != 4) - xbt_test_fail1("M4: n=%d (!= 4)", 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++; } - if (n != 5) - xbt_test_fail1("M5: n=%d (!= 5)", n); + xbt_test_fail1("MX: n=%d (shouldn't reach this point)", n); + } + CATCH(ex) { + if (n != 7) + xbt_test_fail1("M4: n=%d (!= 7)", n); + n++; + xbt_ex_free(ex); + } + if (n != 8) + xbt_test_fail1("M5: n=%d (!= 8)", n); } XBT_TEST_UNIT("value",test_value,"exception value passing") { - xbt_ex_t ex; + xbt_ex_t ex; - TRY { - THROW0(unknown_error, 2, "toto"); - } CATCH(ex) { - xbt_test_add0("exception value passing"); - if (ex.category != unknown_error) - xbt_test_fail1("category=%d (!= 1)", ex.category); - if (ex.value != 2) - 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); - } + TRY { + THROW0(unknown_error, 2, "toto"); + } CATCH(ex) { + xbt_test_add0("exception value passing"); + if (ex.category != unknown_error) + xbt_test_fail1("category=%d (!= 1)", ex.category); + if (ex.value != 2) + 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_TEST_UNIT("variables",test_variables,"variable value preservation") { - xbt_ex_t ex; - int r1, r2; - volatile int v1, v2; + xbt_ex_t ex; + int r1, r2; + volatile int v1, v2; - r1 = r2 = v1 = v2 = 1234; - TRY { - r2 = 5678; - v2 = 5678; - THROW0(unknown_error, 0, "toto"); - } CATCH(ex) { - xbt_test_add0("variable preservation"); - if (r1 != 1234) - xbt_test_fail1("r1=%d (!= 1234)", r1); - if (v1 != 1234) - xbt_test_fail1("v1=%d (!= 1234)", v1); - /* r2 is allowed to be destroyed because not volatile */ - if (v2 != 5678) - xbt_test_fail1("v2=%d (!= 5678)", v2); - xbt_ex_free(ex); - } + r1 = r2 = v1 = v2 = 1234; + TRY { + r2 = 5678; + v2 = 5678; + THROW0(unknown_error, 0, "toto"); + } CATCH(ex) { + xbt_test_add0("variable preservation"); + if (r1 != 1234) + xbt_test_fail1("r1=%d (!= 1234)", r1); + if (v1 != 1234) + xbt_test_fail1("v1=%d (!= 1234)", v1); + /* r2 is allowed to be destroyed because not volatile */ + if (v2 != 5678) + xbt_test_fail1("v2=%d (!= 5678)", v2); + xbt_ex_free(ex); + } } XBT_TEST_UNIT("cleanup",test_cleanup,"cleanup handling") { - xbt_ex_t ex; - volatile int v1; - int c; + xbt_ex_t ex; + volatile int v1; + int c; - xbt_test_add0("cleanup handling"); + xbt_test_add0("cleanup handling"); - v1 = 1234; - c = 0; - TRY { - v1 = 5678; - THROW0(1, 2, "blah"); - } CLEANUP { - if (v1 != 5678) - xbt_test_fail1("v1 = %d (!= 5678)", v1); - c = 1; - } CATCH(ex) { - if (v1 != 5678) - 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); - } - if (!c) - xbt_test_fail0("xbt_ex_free not executed"); + v1 = 1234; + c = 0; + TRY { + v1 = 5678; + THROW0(1, 2, "blah"); + } CLEANUP { + if (v1 != 5678) + xbt_test_fail1("v1 = %d (!= 5678)", v1); + c = 1; + } CATCH(ex) { + if (v1 != 5678) + 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); + } + if (!c) + xbt_test_fail0("xbt_ex_free not executed"); } /* - * The following is the example included in the documentation. It's a good + * The following is the example included in the documentation. It's a good * idea to check its syntax even if we don't try to run it. * And actually, it allows to put comments in the code despite doxygen. - */ + */ static char *mallocex(int size) { return NULL; } @@ -249,7 +322,7 @@ static void bad_example(void) { /* BAD_EXAMPLE */ TRY { char *cp1, *cp2, *cp3; - + cp1 = mallocex(SMALLAMOUNT); globalcontext->first = cp1; cp2 = mallocex(TOOBIG); @@ -267,9 +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 */ @@ -279,7 +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); @@ -288,9 +362,9 @@ static void good_example(void) { } CLEANUP { /*04*/ printf("cp3=%s", cp3 == NULL /*02*/ ? "" : cp3); if (cp3 != NULL) - free(cp3); + free(cp3); if (cp2 != NULL) - free(cp2); + free(cp2); /*05 cp1 was given away */ } CATCH(ex) { /*05 global context untouched */