X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/3c11bfaf6f2479fae9965f23d202d184627d2c8b..6ce033605df0be7e58fc5644d9b082ca8bc982f9:/src/xbt/backtrace_linux.c diff --git a/src/xbt/backtrace_linux.c b/src/xbt/backtrace_linux.c index 9704bc0560..e1de958cda 100644 --- a/src/xbt/backtrace_linux.c +++ b/src/xbt/backtrace_linux.c @@ -1,17 +1,26 @@ /* backtrace_linux - backtrace displaying on linux platform */ /* This file is included by ex.c on need (have execinfo.h, popen & addrline)*/ -/* Copyright (c) 2008, 2009, 2010. The SimGrid Team. +/* Copyright (c) 2008-2015. The SimGrid Team. * 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 + /* This file is to be included in ex.c, so the following headers are not mandatory, but it's to make sure that eclipse see them too */ #include "xbt/ex.h" +#include "xbt/log.h" #include "xbt/str.h" #include "xbt/module.h" /* xbt_binary_name */ -#include "xbt_modinter.h" /* backtrace initialization headers */ +#include "src/xbt_modinter.h" /* backtrace initialization headers */ +#if HAVE_MC +#define UNW_LOCAL_ONLY +#include +#endif /* end of "useless" inclusions */ extern char **environ; /* the environment, as specified by the opengroup */ @@ -58,6 +67,10 @@ backtrace_helper (struct _Unwind_Context *ctx, void *a) * */ int xbt_backtrace_no_malloc(void **array, int size) { + int i = 0; + for(i=0; i < size; i++) + array[i] = NULL; + struct trace_arg arg = { .array = array, .size = size, .cnt = -1 }; if (size >= 1) @@ -75,13 +88,13 @@ void xbt_backtrace_current(xbt_ex_t * e) e->used = backtrace((void **) e->bt, XBT_BACKTRACE_SIZE); if (e->used == 0) { fprintf(stderr, "The backtrace() function failed, which probably means that the memory is exhausted. Here is a crude dump of the exception that I was trying to build:"); - fprintf(stderr, "%s:%s(%d) [%s:%d] %s", e->host,e->procname,e->pid, e->file,e->line,e->msg); + fprintf(stderr, "%s(%d) [%s:%d] %s", + e->procname, e->pid, e->file, e->line, e->msg); fprintf(stderr, "Bailing out now since there is nothing I can do without a decent amount of memory. Please go fix the memleaks\n"); exit(1); } } - void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly improved/simplifyied with http://cairo.sourcearchive.com/documentation/1.9.4/backtrace-symbols_8c-source.html { int i; @@ -111,7 +124,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im e->bt_strings = NULL; - if (!xbt_binary_name) /* no binary name, nothing to do */ + if (xbt_binary_name == NULL) /* no binary name, nothing to do */ return; if (e->used <= 1) @@ -137,8 +150,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im binary_name = bprintf("%s/%s", data, xbt_binary_name); if (!stat(binary_name, &stat_buf)) { /* Found. */ - XBT_DEBUG("Looked in the PATH for the binary. Found %s", - binary_name); + XBT_DEBUG("Looked in the PATH for the binary. Found %s", binary_name); break; } } @@ -148,8 +160,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im e->used = 1; e->bt_strings = xbt_new(char *, 1); - e->bt_strings[0] = - bprintf("(binary '%s' not found the path)", xbt_binary_name); + e->bt_strings[0] = bprintf("(binary '%s' not found in the PATH)", xbt_binary_name); free(backtrace_syms); return; } @@ -159,9 +170,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im } else { binary_name = xbt_strdup(xbt_binary_name); } - cmd = curr = - xbt_new(char, - strlen(ADDR2LINE) + 25 + strlen(binary_name) + 32 * e->used); + 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); @@ -191,27 +200,25 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im XBT_VERB("Fire a first command: '%s'", cmd); pipe = popen(cmd, "r"); if (!pipe) { - XBT_CRITICAL("Cannot fork addr2line to display the backtrace"); - abort(); + xbt_die("Cannot fork addr2line to display the backtrace"); } for (i = 0; i < e->used; i++) { - char *fgets_res; XBT_DEBUG("Looking for symbol %d, addr = '%s'", i, addrs[i]); - fgets_res = fgets(line_func, 1024, pipe); - if (fgets_res == NULL) - THROWF(system_error, 0, - "Cannot run fgets to look for symbol %d, addr %s", i, - addrs[i]); - line_func[strlen(line_func) - 1] = '\0'; - fgets_res = fgets(line_pos, 1024, pipe); - if (fgets_res == NULL) - THROWF(system_error, 0, - "Cannot run fgets to look for symbol %d, addr %s", i, - addrs[i]); - line_pos[strlen(line_pos) - 1] = '\0'; - - if (strcmp("??", line_func)) { + if (fgets(line_func, 1024, pipe)) { + line_func[strlen(line_func) - 1] = '\0'; + } else { + XBT_VERB("Cannot run fgets to look for symbol %d, addr %s", i, addrs[i]); + strcpy(line_func, "???"); + } + if (fgets(line_pos, 1024, pipe)) { + line_pos[strlen(line_pos) - 1] = '\0'; + } else { + XBT_VERB("Cannot run fgets to look for symbol %d, addr %s", i, addrs[i]); + strcpy(line_pos, backtrace_syms[i]); + } + + if (strcmp("??", line_func) != 0) { XBT_DEBUG("Found static symbol %s() at %s", line_func, line_pos); e->bt_strings[i] = bprintf("** In %s() at %s", line_func, line_pos); @@ -234,8 +241,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im addr = strtol(addrs[i], &p, 16); if (*p != '\0') { - XBT_CRITICAL("Cannot parse backtrace address '%s' (addr=%#lx)", - addrs[i], addr); + XBT_CRITICAL("Cannot parse backtrace address '%s' (addr=%#lx)", addrs[i], addr); } XBT_DEBUG("addr=%s (as string) =%#lx (as number)", addrs[i], addr); @@ -257,8 +263,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im } if (found) { XBT_DEBUG("%#lx in [%#lx-%#lx]", addr, first, last); - XBT_DEBUG - ("Symbol found, map lines not further displayed (even if looking for next ones)"); + XBT_DEBUG("Symbol found, map lines not further displayed (even if looking for next ones)"); } } fclose(maps); @@ -266,8 +271,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im free(addrs[i]); if (!found) { - XBT_VERB - ("Problem while reading the maps file. Following backtrace will be mangled."); + XBT_VERB("Problem while reading the maps file. Following backtrace will be mangled."); XBT_DEBUG("No dynamic. Static symbol: %s", backtrace_syms[i]); e->bt_strings[i] = bprintf("** In ?? (%s)", backtrace_syms[i]); continue; @@ -280,8 +284,7 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im addrs[i] = bprintf("0x%0*lx", addr_len - 2, addr - offset); XBT_DEBUG("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 */ + /* Got it. We have our new address. Let's get the library path and we are set */ p = xbt_strdup(backtrace_syms[i]); if (p[0] == '[') { /* library path not displayed in the map file either... */ @@ -301,19 +304,20 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im XBT_VERB("Fire a new command: '%s'", subcmd); subpipe = popen(subcmd, "r"); if (!subpipe) { - XBT_CRITICAL("Cannot fork addr2line to display the backtrace"); - abort(); + xbt_die("Cannot fork addr2line to display the backtrace"); + } + if (fgets(line_func, 1024, subpipe)) { + line_func[strlen(line_func) - 1] = '\0'; + } else { + XBT_VERB("Cannot read result of subcommand %s", subcmd); + strcpy(line_func, "???"); + } + if (fgets(line_pos, 1024, subpipe)) { + line_pos[strlen(line_pos) - 1] = '\0'; + } else { + XBT_VERB("Cannot read result of subcommand %s", subcmd); + strcpy(line_pos, backtrace_syms[i]); } - fgets_res = fgets(line_func, 1024, subpipe); - if (fgets_res == NULL) - THROWF(system_error, 0, "Cannot read result of subcommand %s", - subcmd); - line_func[strlen(line_func) - 1] = '\0'; - fgets_res = fgets(line_pos, 1024, subpipe); - if (fgets_res == NULL) - THROWF(system_error, 0, "Cannot read result of subcommand %s", - subcmd); - line_pos[strlen(line_pos) - 1] = '\0'; pclose(subpipe); free(subcmd); } @@ -321,24 +325,19 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im /* check whether the trick worked */ if (strcmp("??", line_func)) { XBT_DEBUG("Found dynamic symbol %s() at %s", line_func, line_pos); - e->bt_strings[i] = - bprintf("** In %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 */ - XBT_DEBUG("Dynamic symbol not found. Raw address = %s", - backtrace_syms[i]); + XBT_DEBUG("Dynamic symbol not found. Raw address = %s", backtrace_syms[i]); e->bt_strings[i] = bprintf("** In ?? at %s", backtrace_syms[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")) - || !strncmp("smx_ctx_sysv_wrapper", line_func, - strlen("smx_ctx_sysv_wrapper"))) { + !strncmp("xbt_thread_context_wrapper", line_func, strlen("xbt_thread_context_wrapper")) + || !strncmp("smx_ctx_sysv_wrapper", line_func, strlen("smx_ctx_sysv_wrapper"))) { int j; for (j = i + 1; j < e->used; j++) @@ -346,17 +345,42 @@ void xbt_ex_setup_backtrace(xbt_ex_t * e) //FIXME: This code could be greatly im e->used = i + 1; if (!strncmp - ("xbt_thread_context_wrapper", line_func, - strlen("xbt_thread_context_wrapper"))) { + ("xbt_thread_context_wrapper", line_func, strlen("xbt_thread_context_wrapper"))) { free(e->bt_strings[i]); e->bt_strings[i] = xbt_strdup("** (in a separate thread)"); } } - - } pclose(pipe); free(addrs); free(backtrace_syms); free(cmd); } + +#if HAVE_MC +int xbt_libunwind_backtrace(void* bt[XBT_BACKTRACE_SIZE], int size){ + int i = 0; + for(i=0; i < size; i++) + bt[i] = NULL; + + i=0; + + unw_cursor_t c; + unw_context_t uc; + + unw_getcontext (&uc); + unw_init_local (&c, &uc); + + unw_word_t ip; + + unw_step(&c); + + while(unw_step(&c) >= 0 && i < size){ + unw_get_reg(&c, UNW_REG_IP, &ip); + bt[i] = (void*)(long)ip; + i++; + } + + return i; +} +#endif