/* 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 <execinfo.h>
+#include <sys/stat.h>
+
/* 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 */
+#ifdef HAVE_MC
+#define UNW_LOCAL_ONLY
+#include <libunwind.h>
+#endif
/* end of "useless" inclusions */
extern char **environ; /* the environment, as specified by the opengroup */
* */
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)
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);
}
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)
e->bt_strings = xbt_new(char *, 1);
e->bt_strings[0] =
- bprintf("(binary '%s' not found the path)", xbt_binary_name);
+ bprintf("(binary '%s' not found in the PATH)", xbt_binary_name);
free(backtrace_syms);
return;
}
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);
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);
}
free(backtrace_syms);
free(cmd);
}
+
+#ifdef 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
