#endif
}
+extern char **environ; /* the environment, as specified by the opengroup */
void xbt_ex_setup_backtrace(xbt_ex_t *e) {
#if defined(HAVE_EXECINFO_H) && defined(HAVE_POPEN) && defined(ADDR2LINE)
char **backtrace = backtrace_symbols (e->bt, e->used);
/* To build the commandline of addr2line */
- char *cmd = xbt_new(char,strlen(ADDR2LINE)+25+strlen(xbt_binary_name)+32*e->used);
- char *curr=cmd;
+ char *cmd, *curr;
/* to extract the addresses from the backtrace */
char **addrs=xbt_new(char*,e->used);
/* 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, ":");
+ 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; i<e->used;i++) {
/* retrieve this address */
DEBUG2("Retrieving address number %d from '%s'", i, backtrace[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 */
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);
free(addrs[j]);
e->used = i;
}
-
+
}
pclose(pipe);