-/* $Id: ex.c 5173 2008-01-07 22:10:52Z mquinson $ */
-
/* backtrace_linux - backtrace displaying on linux platform */
/* This file is included by ex.c on need (have execinfo.h, popen & addrline)*/
-/* Copyright (c) 2007 The SimGrid team */
-/* All rights reserved. */
+/* Copyright (c) 2008, 2009, 2010. 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. */
/* 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/str.h"
-#include "xbt/module.h" /* xbt_binary_name */
-#include "xbt_modinter.h" /* backtrace initialization headers */
+#include "xbt/module.h" /* xbt_binary_name */
+#include "xbt_modinter.h" /* backtrace initialization headers */
/* end of "useless" inclusions */
extern char **environ; /* the environment, as specified by the opengroup */
/* Module creation/destruction: nothing to do on linux */
-void xbt_backtrace_init(void) { }
-void xbt_backtrace_exit(void) { }
+void xbt_backtrace_preinit(void)
+{
+}
-void xbt_backtrace_current(xbt_ex_t * e) {
+void xbt_backtrace_postexit(void)
+{
+}
+
+void xbt_backtrace_current(xbt_ex_t * e)
+{
e->used = backtrace((void **) e->bt, XBT_BACKTRACE_SIZE);
}
struct stat stat_buf;
char *binary_name = NULL;
- xbt_assert0(e && e->used,"Backtrace not setup yet, cannot set it up for display");
+ xbt_assert0(e
+ && e->used,
+ "Backtrace not setup yet, cannot set it up for display");
backtrace_syms = backtrace_symbols(e->bt, e->used);
/* ignore first one, which is this xbt_backtrace_current() */
e->used--;
- memmove(backtrace_syms,backtrace_syms+1,sizeof(char*)*e->used);
- addrs = xbt_new(char *, e->used);
+ memmove(backtrace_syms, backtrace_syms + 1, sizeof(char *) * e->used);
e->bt_strings = NULL;
/* Found. */
DEBUG1("Looked in the PATH for the binary. Found %s",
binary_name);
- xbt_dynar_free(&path);
break;
}
}
+ xbt_dynar_free(&path);
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);
+ bprintf("(binary '%s' not found the path)", xbt_binary_name);
+ free(backtrace_syms);
return;
}
- xbt_dynar_free(&path);
break;
}
}
binary_name = xbt_strdup(xbt_binary_name);
}
cmd = curr =
- xbt_new(char,
- strlen(ADDR2LINE) + 25 + strlen(binary_name) + 32 * e->used);
+ 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);
+ addrs = xbt_new(char *, e->used);
for (i = 0; i < e->used; i++) {
/* retrieve this address */
DEBUG2("Retrieving address number %d from '%s'", i, backtrace_syms[i]);
DEBUG2("Looking for symbol %d, addr = '%s'", i, addrs[i]);
fgets_res = fgets(line_func, 1024, pipe);
if (fgets_res == NULL)
- THROW2(system_error,0, "Cannot run fgets to look for symbol %d, addr %s",i, addrs[i]);
+ THROW2(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)
- THROW2(system_error,0, "Cannot run fgets to look for symbol %d, addr %s",i, addrs[i]);
+ THROW2(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)) {
DEBUG2("Found static 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. The symbol is in a dynamic library. Let's get wild */
char *maps_name;
if (found) {
DEBUG3("%#lx in [%#lx-%#lx]", addr, first, last);
DEBUG0
- ("Symbol found, map lines not further displayed (even if looking for next ones)");
+ ("Symbol found, map lines not further displayed (even if looking for next ones)");
}
}
fclose(maps);
free(maps_name);
+ free(addrs[i]);
if (!found) {
VERB0
- ("Problem while reading the maps file. Following backtrace will be mangled.");
+ ("Problem while reading the maps file. Following backtrace will be mangled.");
DEBUG1("No dynamic. Static symbol: %s", backtrace_syms[i]);
e->bt_strings[i] = bprintf("** In ?? (%s)", backtrace_syms[i]);
continue;
We now need to substract this from the address we got from backtrace.
*/
- free(addrs[i]);
addrs[i] = bprintf("0x%0*lx", addr_len - 2, addr - offset);
DEBUG2("offset=%#lx new addr=%s", offset, addrs[i]);
CRITICAL0("Cannot fork addr2line to display the backtrace");
abort();
}
- fgets_res=fgets(line_func, 1024, subpipe);
+ fgets_res = fgets(line_func, 1024, subpipe);
if (fgets_res == NULL)
- THROW1(system_error,0, "Cannot read result of subcommand %s",subcmd);
+ THROW1(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)
- THROW1(system_error,0, "Cannot read result of subcommand %s",subcmd);
+ THROW1(system_error, 0, "Cannot read result of subcommand %s",
+ subcmd);
line_pos[strlen(line_pos) - 1] = '\0';
pclose(subpipe);
free(subcmd);
/* check whether the trick worked */
if (strcmp("??", line_func)) {
DEBUG2("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 */
DEBUG1("Dynamic symbol not found. Raw address = %s",
/* 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"))) {
+ 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++)
free(addrs[j]);
- e->used = i;
+ e->used = i + 1;
if (!strncmp
("xbt_thread_context_wrapper", line_func,
strlen("xbt_thread_context_wrapper"))) {
- e->used++;
+ free(e->bt_strings[i]);
e->bt_strings[i] = bprintf("** (in a separate thread)");
}
}
