X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/25a607b11c442099b3ef353df545d2f0c30f97d5..c56524afd9d8c0c43c7815b1a14cf877de32976c:/src/xbt/ex.c diff --git a/src/xbt/ex.c b/src/xbt/ex.c index 7e6e63fb65..c8d593be17 100644 --- a/src/xbt/ex.c +++ b/src/xbt/ex.c @@ -1,72 +1,196 @@ -/* -** 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/synchro.h" /* xbt_thread_self */ #include "gras/Virtu/virtu_interface.h" /* gras_os_myname */ +#include "xbt/ex_interface.h" + +#if (defined(WIN32) && defined(_M_IX86)) +#include +#endif + +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_ex,xbt,"Exception mecanism"); + +#if (defined(WIN32) && defined(_M_IX86)) + +/* + * Win32 (x86) implementation backtrace, backtrace_symbols, backtrace_symbols_fd + * : support for application self-debugging. + */ + +/* Pointer function to SymInitialize() */ +typedef BOOL (WINAPI *xbt_pfn_sym_initialize_t)(HANDLE, PSTR , BOOL); + +/* Pointer function to SymCleanup() */ +typedef BOOL (WINAPI *xbt_pfn_sym_cleanup_t)(HANDLE hProcess); + +/* Pointer function to SymFunctionTableAccess() */ +typedef PVOID (WINAPI *xbt_pfn_sym_function_table_access_t)(HANDLE, DWORD); + +/* Pointer function to SymGetLineFromAddr() */ +typedef BOOL (WINAPI *xbt_pfn_sym_get_line_from_addr_t)(HANDLE, DWORD, PDWORD , PIMAGEHLP_LINE); + +/* Pointer function to SymGetModuleBase() */ +typedef DWORD (WINAPI *xbt_pfn_sym_get_module_base_t)(HANDLE,DWORD); + +/* Pointer function to SymGetOptions() */ +typedef DWORD (WINAPI *xbt_pfn_sym_get_options_t)(VOID); + +/* Pointer function to SymGetSymFromAddr() */ +typedef BOOL (WINAPI *xbt_pfn_sym_get_sym_from_addr_t)(HANDLE, DWORD, PDWORD , OUT PIMAGEHLP_SYMBOL); + +/* Pointer function to SymSetOptions() */ +typedef DWORD (WINAPI *xbt_pfn_sym_set_options_t)(DWORD); + +/* Pointer function to StackWalk() */ +typedef BOOL (WINAPI *xbt_pfn_stack_walk_t)(DWORD, HANDLE, HANDLE ,LPSTACKFRAME, PVOID,PREAD_PROCESS_MEMORY_ROUTINE, PFUNCTION_TABLE_ACCESS_ROUTINE, PGET_MODULE_BASE_ROUTINE, PTRANSLATE_ADDRESS_ROUTINE); + +/* This structure representes the debug_help library used interface */ +typedef struct s_xbt_debug_help +{ + HINSTANCE instance; + HANDLE process_handle; + xbt_pfn_sym_initialize_t sym_initialize; + xbt_pfn_sym_cleanup_t sym_cleanup; + xbt_pfn_sym_function_table_access_t sym_function_table_access; + xbt_pfn_sym_get_line_from_addr_t sym_get_line_from_addr; + xbt_pfn_sym_get_module_base_t sym_get_module_base; + xbt_pfn_sym_get_options_t sym_get_options; + xbt_pfn_sym_get_sym_from_addr_t sym_get_sym_from_addr; + xbt_pfn_sym_set_options_t sym_set_options; + xbt_pfn_stack_walk_t stack_walk; +}s_xbt_debug_hlp_t,* xbt_debug_hlp_t; + + +/* the address to the unique reference to the debug help library interface */ +static xbt_debug_hlp_t +dbg_hlp = NULL; + +/* initialize the debug help library */ +static int +dbg_hlp_init(HANDLE process_handle); + +/* finalize the debug help library */ +static int +dbg_hlp_finalize(void); + +/* + * backtrace() function. + * + * Returns a backtrace for the calling program, in the array + * pointed to by buffer. A backtrace is the series of currently active + * function calls for the program. Each item in the array pointed to by + * buffer is of type void *, and is the return address from the corre- + * sponding stack frame. The size argument specifies the maximum number + * of addresses that can be stored in buffer. If the backtrace is larger + * than size, then the addresses corresponding to the size most recent + * function calls are returned; to obtain the complete backtrace, make + * sure that buffer and size are large enough. + */ + +int +backtrace (void **buffer, int size); + +/* + * backtrace_symbols() function. + * + * Given the set of addresses returned by backtrace() in buffer, back- + * trace_symbols() translates the addresses into an array of strings containing + * the name, the source file and the line number or the las called functions. + */ +char ** +backtrace_symbols (void *const *buffer, int size); + +/* + * backtrace_symbols_fd() function. + * + * Same as backtrace_symbols() function but, the the array of strings is wrotten + * in a file (fd is the file descriptor of this file) + */ +void +backtrace_symbols_fd(void *const *buffer, int size, int fd); +#endif /* 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); -/** \brief show the backtrace of the current point (lovely while debuging) */ -void xbt_display_backtrace(void) { -#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) - xbt_ex_t e; - int i; +void xbt_backtrace_current(xbt_ex_t *e) { +#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) || (defined(WIN32) && defined(_M_IX86)) + e->used = backtrace((void**)e->bt,XBT_BACKTRACE_SIZE); + e->bt_strings = NULL; + xbt_ex_setup_backtrace(e); +#endif +} - e.used = backtrace((void**)e.bt,XBT_BACKTRACE_SIZE); - e.bt_strings = NULL; - xbt_ex_setup_backtrace(&e); - for (i=1; iused == 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); + } + + /* don't fool xbt_ex_free with uninitialized msg field */ + e->msg=NULL; + e->remote=0; + xbt_ex_free(*e); #else - fprintf(stderr,"No backtrace on this arch"); + + 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); +} + +#ifndef WIN32 +extern char **environ; /* the environment, as specified by the opengroup */ +#endif + void xbt_ex_setup_backtrace(xbt_ex_t *e) { #if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE) int i; @@ -74,8 +198,7 @@ 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 *curr=cmd; + char *cmd, *curr; /* to extract the addresses from the backtrace */ char **addrs=xbt_new(char*,e->used); @@ -87,42 +210,98 @@ void xbt_ex_setup_backtrace(xbt_ex_t *e) { /* size (in char) of pointers on this arch */ int addr_len=0; - + + /* To search for the right executable path when not trivial */ + struct stat stat_buf; + char *binary_name = NULL; + + /* 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); + if (stat(xbt_binary_name,&stat_buf)) { + /* Damn. binary not in current dir. We'll have to dig the PATH to find it */ + int i; + for (i=0; environ[i]; i++) { + if (!strncmp("PATH=",environ[i], 5)) { + xbt_dynar_t path=xbt_str_split(environ[i] + 5, ":"); + unsigned int cpt; + char *data; + xbt_dynar_foreach(path, cpt, data) { + if (binary_name) + free(binary_name); + binary_name = bprintf("%s/%s",data,xbt_binary_name); + if (!stat(binary_name,&stat_buf)) { + /* Found. */ + DEBUG1("Looked in the PATH for the binary. Found %s",binary_name); + xbt_dynar_free(&path); + break; + } + } + if (stat(binary_name,&stat_buf)) { + /* not found */ + e->used = 1; + e->bt_strings = xbt_new(char*,1); + e->bt_strings[0] = bprintf("(binary '%s' not found the path)",xbt_binary_name); + return; + } + xbt_dynar_free(&path); + break; + } + } + } else { + binary_name = xbt_strdup(xbt_binary_name); + } + cmd = curr = xbt_new(char,strlen(ADDR2LINE)+25+strlen(binary_name)+32*e->used); + + curr += sprintf(curr,"%s -f -e %s ",ADDR2LINE,binary_name); + free(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); - + if (strcmp(buff,"(nil)")) + addrs[i]=bprintf("%s", buff); + else + addrs[i]=bprintf("0x0"); + 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]); - } + } addr_len = strlen(addrs[0]); /* 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"); - // 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++) { + 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)) { - e->bt_strings[i] = bprintf("** At %s: %s (%s)", - addrs[i], line_func,line_pos); + DEBUG2("Found static symbol %s() at %s", line_func, line_pos); + e->bt_strings[i] = bprintf("** In %s() at %s", 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; @@ -133,84 +312,158 @@ 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; + } + if (found) { + DEBUG3("%#lx in [%#lx-%#lx]", addr, first,last); + DEBUG0("Symbol found, map lines not further displayed (even if looking for next ones)"); + } } - 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."); + 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. */ - 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 */ p = xbt_strdup(backtrace[i]); - p2 = strrchr(p,'('); - if (p2) *p2= '\0'; - p2 = strrchr(p,' '); - if (p2) *p2= '\0'; + if (p[0]=='[') { + /* library path not displayed in the map file either... */ + free(p); + sprintf(line_func,"??"); + } else { + 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); + /* 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); + DEBUG2("Found dynamic symbol %s() at %s", line_func, line_pos); + e->bt_strings[i] = bprintf("** In %s() at %s", 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); + DEBUG1("Dynamic symbol not found. Raw address = %s", backtrace[i]); + e->bt_strings[i] = bprintf("** In ?? at %s", backtrace[i]); } + } free(addrs[i]); + + /* Mask the bottom of the stack */ + if (!strncmp("main",line_func,strlen("main")) || + !strncmp("xbt_thread_context_wrapper",line_func,strlen("xbt_thread_context_wrapper"))) { + int j; + for (j=i+1; jused; j++) + free(addrs[j]); + e->used = i; + + if (!strncmp("xbt_thread_context_wrapper",line_func,strlen("xbt_thread_context_wrapper"))) { + e->used++; + e->bt_strings[i] = bprintf("** (in a separate thread)"); + } + } + + } pclose(pipe); free(addrs); free(backtrace); free(cmd); +#elif (defined(WIN32) && defined (_M_IX86)) +int i; + /* to get the backtrace from the libc */ + char **backtrace = backtrace_symbols (e->bt, e->used); + + /* parse the output and build a new backtrace */ + e->bt_strings = xbt_new(char*,e->used); + + + for(i=0; iused; i++) + { + e->bt_strings[i] = strdup(backtrace[i]); + free(backtrace[i]); + } + + free(backtrace); #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) +#if (defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE)) || (defined(WIN32) && defined(_M_IX86)) /* We have everything to build neat backtraces */ { int i; @@ -224,7 +477,7 @@ 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); } @@ -236,26 +489,27 @@ 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); - 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; i sur le dernier élément déposé dans la pile (l'élément courant) */ + _asm call $+5 + _asm pop eax + _asm mov context.Eip, eax + _asm mov eax, esp + _asm mov context.Esp, eax + _asm mov context.Ebp, ebp + + dbg_hlp_init(GetCurrentProcess()); + + if((NULL == dbg_hlp) || (size <= 0) || (NULL == buffer)) + { + errno = EINVAL; + return 0; + } + + for(pos = 0; pos < size; pos++) + buffer[pos] = NULL; + + pos = 0; + + while(pos < size) + { + stack_frame = (void*)calloc(1,sizeof(STACKFRAME)); + + if(!stack_frame) + { + errno = ENOMEM; + break; + } + + stack_frame->AddrPC.Offset = context.Eip; + stack_frame->AddrPC.Mode = AddrModeFlat; + + stack_frame->AddrFrame.Offset = context.Ebp; + stack_frame->AddrFrame.Mode = AddrModeFlat; + + stack_frame->AddrStack.Offset = context.Esp; + stack_frame->AddrStack.Mode = AddrModeFlat; + + if((*(dbg_hlp->stack_walk))( + IMAGE_FILE_MACHINE_I386, + dbg_hlp->process_handle, + GetCurrentThread(), + stack_frame, + &context, + NULL, + dbg_hlp->sym_function_table_access, + dbg_hlp->sym_get_module_base, + NULL) + && !first) + { + if(stack_frame->AddrReturn.Offset) + buffer[pos++] = (void*)stack_frame; + else + { + free(stack_frame); /* no symbol */ + break; + } + } + else + { + free(stack_frame); + + if(first) + first = 0; + else + break; + } + } + + return pos; +} + +char ** +backtrace_symbols (void *const *buffer, int size) +{ + int pos; + int success = 0; + char** strings; + STACKFRAME* stack_frame; + char str[MAX_SYM_NAME] = {0}; + IMAGEHLP_SYMBOL * pSym; + unsigned long displacement = 0; + IMAGEHLP_LINE line_info = {0}; + IMAGEHLP_MODULE module = {0}; + byte __buffer[(sizeof(SYMBOL_INFO) +MAX_SYM_NAME * sizeof(TCHAR) + sizeof(ULONG64) - 1) / sizeof(ULONG64)]; + + if((NULL == dbg_hlp) || (size <= 0) || (NULL == buffer)) + { + errno = EINVAL; + return NULL; + } + + strings = (char**)calloc(size,sizeof(char*)); + + if(NULL == strings) + { + errno = ENOMEM; + return NULL; + } + + pSym = (IMAGEHLP_SYMBOL*)__buffer; + + pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL); + pSym->MaxNameLength = MAX_SYM_NAME; + + + line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE); + module.SizeOfStruct = sizeof(IMAGEHLP_MODULE); + + for(pos = 0; pos < size; pos++) + { + stack_frame = (STACKFRAME*)(buffer[pos]); + + if(NULL != stack_frame) + { + + if((*(dbg_hlp->sym_get_sym_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &displacement,pSym)) + { + if((*(dbg_hlp->sym_get_line_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &displacement,&line_info)) + { + + sprintf(str,"** In %s() at %s:%d", pSym->Name,line_info.FileName,line_info.LineNumber); + + strings[pos] = strdup(str); + memset(str,0,MAX_SYM_NAME); + + success = 1; + } + } + + free(stack_frame); + } + else + break; + } + + if(!success) + { + free(strings); + strings = NULL; + } + + dbg_hlp_finalize(); + + return strings; +} + +void +backtrace_symbols_fd(void *const *buffer, int size, int fd) +{ + int pos; + int success = 0; + STACKFRAME* stack_frame; + char str[MAX_SYM_NAME] = {0}; + IMAGEHLP_SYMBOL * pSym; + unsigned long displacement = 0; + IMAGEHLP_LINE line_info = {0}; + IMAGEHLP_MODULE module = {0}; + + byte __buffer[(sizeof(SYMBOL_INFO) +MAX_SYM_NAME * sizeof(TCHAR) + sizeof(ULONG64) - 1) / sizeof(ULONG64)]; + + if((NULL == dbg_hlp) || (size <= 0) || (NULL == buffer) || (-1 == fd)) + { + errno = EINVAL; + return; + } + + pSym = (IMAGEHLP_SYMBOL*)__buffer; + + pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL); + pSym->MaxNameLength = MAX_SYM_NAME; + + + line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE); + module.SizeOfStruct = sizeof(IMAGEHLP_MODULE); + + for(pos = 0; pos < size; pos++) + { + stack_frame = (STACKFRAME*)(buffer[pos]); + + if(NULL != stack_frame) + { + + if((*(dbg_hlp->sym_get_sym_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &displacement,pSym)) + { + if((*(dbg_hlp->sym_get_line_from_addr))(dbg_hlp->process_handle,stack_frame->AddrPC.Offset, &displacement,&line_info)) + { + + + sprintf(str,"** In %s() at %s:%d\n", pSym->Name,line_info.FileName,line_info.LineNumber); + + if(-1 == write(fd,str,strlen(str))) + break; + + memset(str,0,MAX_SYM_NAME); + + success = 1; + } + } + + free(stack_frame); + } + else + break; + } + + dbg_hlp_finalize(); + +} + +static int +dbg_hlp_init(HANDLE process_handle) +{ + if(dbg_hlp) + { + /* debug help is already loaded */ + return 0; + } + + /* allocation */ + dbg_hlp = (xbt_debug_hlp_t)calloc(1,sizeof(s_xbt_debug_hlp_t)); + + if(!dbg_hlp) + return ENOMEM; + + /* load the library */ + dbg_hlp->instance = LoadLibraryA("Dbghelp.dll"); + + if(!(dbg_hlp->instance)) + { + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + /* get the pointers to debug help library exported functions */ + + if(!((dbg_hlp->sym_initialize) = (xbt_pfn_sym_initialize_t)GetProcAddress(dbg_hlp->instance,"SymInitialize"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + if(!((dbg_hlp->sym_cleanup) = (xbt_pfn_sym_cleanup_t)GetProcAddress(dbg_hlp->instance,"SymCleanup"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + if(!((dbg_hlp->sym_function_table_access) = (xbt_pfn_sym_function_table_access_t)GetProcAddress(dbg_hlp->instance,"SymFunctionTableAccess"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + if(!((dbg_hlp->sym_get_line_from_addr) = (xbt_pfn_sym_get_line_from_addr_t)GetProcAddress(dbg_hlp->instance,"SymGetLineFromAddr"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + if(!((dbg_hlp->sym_get_module_base) = (xbt_pfn_sym_get_module_base_t)GetProcAddress(dbg_hlp->instance,"SymGetModuleBase"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + if(!((dbg_hlp->sym_get_options) = (xbt_pfn_sym_get_options_t)GetProcAddress(dbg_hlp->instance,"SymGetOptions"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + if(!((dbg_hlp->sym_get_sym_from_addr) = (xbt_pfn_sym_get_sym_from_addr_t)GetProcAddress(dbg_hlp->instance,"SymGetSymFromAddr"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + if(!((dbg_hlp->sym_set_options) = (xbt_pfn_sym_set_options_t)GetProcAddress(dbg_hlp->instance,"SymSetOptions"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + if(!((dbg_hlp->stack_walk) = (xbt_pfn_stack_walk_t)GetProcAddress(dbg_hlp->instance,"StackWalk"))) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + dbg_hlp->process_handle = process_handle; + + (*(dbg_hlp->sym_set_options))((*(dbg_hlp->sym_get_options))() | SYMOPT_LOAD_LINES | SYMOPT_DEFERRED_LOADS); + + if(!(*(dbg_hlp->sym_initialize))(dbg_hlp->process_handle,0,1)) + { + FreeLibrary(dbg_hlp->instance); + free(dbg_hlp); + dbg_hlp = NULL; + return (int)GetLastError(); + } + + + return 0; +} + +static int +dbg_hlp_finalize(void) +{ + if(!dbg_hlp) + return EINVAL; + + if(!(*(dbg_hlp->sym_cleanup))(dbg_hlp->process_handle)) + return (int)GetLastError(); + + if(!FreeLibrary(dbg_hlp->instance)) + return (int)GetLastError(); + + free(dbg_hlp); + dbg_hlp = NULL; + + return 0; +} +# endif +#else /* dummy implementation. We won't use the result, but ex.h needs it to be defined */ int backtrace (void **__array, int __size) { - return 0; + return 0; } #endif #ifdef SIMGRID_TEST +#include #include "xbt/ex.h" XBT_TEST_SUITE("xbt_ex","Exception Handling"); @@ -305,7 +918,7 @@ XBT_TEST_UNIT("controlflow",test_controlflow, "basic nested control flow") { if (n != 3) xbt_test_fail1("M3: n=%d (!= 3)", n); n++; - xbt_ex_free(&ex); + xbt_ex_free(ex); } n++; TRY { @@ -326,7 +939,7 @@ XBT_TEST_UNIT("controlflow",test_controlflow, "basic nested control flow") { if (n != 7) xbt_test_fail1("M4: n=%d (!= 7)", n); n++; - xbt_ex_free(&ex); + xbt_ex_free(ex); } if (n != 8) xbt_test_fail1("M5: n=%d (!= 8)", n); @@ -345,7 +958,7 @@ 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); } } @@ -368,7 +981,7 @@ 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); } } @@ -393,7 +1006,7 @@ 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"); @@ -437,9 +1050,10 @@ 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 */ @@ -449,7 +1063,7 @@ 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);