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info: Properly start and end dwfl sessions when getting stack traces

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We were creating a new session to retrive each line of a stack trace
and we are supposed to start it once for a whole stack trace.

And pass the whole file to gst-indent.

https://bugzilla.gnome.org/show_bug.cgi?id=775365
This commit is contained in:
Thibault Saunier 2016-11-29 17:34:40 -03:00
parent 90f101981c
commit dbe3d2b328
1 changed files with 28 additions and 21 deletions
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49
gst/gstinfo.c
View file

@ -317,13 +317,14 @@ _priv_gst_in_valgrind (void)
}
static gchar *
_replace_pattern_in_gst_debug_file_name (gchar * name, const char * token, guint val)
_replace_pattern_in_gst_debug_file_name (gchar * name, const char *token,
guint val)
{
gchar * token_start;
gchar *token_start;
if ((token_start = strstr (name, token))) {
gsize token_len = strlen (token);
gchar * name_prefix = name;
gchar * name_suffix = token_start + token_len;
gchar *name_prefix = name;
gchar *name_suffix = token_start + token_len;
token_start[0] = '\0';
name = g_strdup_printf ("%s%u%s", name_prefix, val, name_suffix);
g_free (name_prefix);
@ -2605,23 +2606,12 @@ gst_printerrln (const gchar * format, ...)
#ifdef HAVE_UNWIND
#ifdef HAVE_DW
static gboolean
append_debug_info (GString * trace, const void *ip)
append_debug_info (GString * trace, Dwfl * dwfl, const void *ip)
{
Dwfl *dwfl;
Dwfl_Line *line;
Dwarf_Addr addr;
Dwfl_Module *module;
const gchar *function_name;
gchar *debuginfo_path = NULL;
Dwfl_Callbacks callbacks = {
.find_elf = dwfl_linux_proc_find_elf,
.find_debuginfo = dwfl_standard_find_debuginfo,
.debuginfo_path = &debuginfo_path,
};
dwfl = dwfl_begin (&callbacks);
if (!dwfl)
return FALSE;
if (dwfl_linux_proc_report (dwfl, getpid ()) != 0)
return FALSE;
@ -2663,17 +2653,30 @@ generate_unwind_trace (void)
gboolean use_libunwind = TRUE;
GString *trace = g_string_new (NULL);
#ifdef HAVE_DW
Dwfl *dwfl;
Dwfl_Callbacks callbacks = {
.find_elf = dwfl_linux_proc_find_elf,
.find_debuginfo = dwfl_standard_find_debuginfo,
};
dwfl = dwfl_begin (&callbacks);
#endif /* HAVE_DW */
unw_getcontext (&uc);
unw_init_local (&cursor, &uc);
while (unw_step (&cursor) > 0) {
#ifdef HAVE_DW
unw_word_t ip;
if (dwfl) {
unw_word_t ip;
unw_get_reg (&cursor, UNW_REG_IP, &ip);
if (append_debug_info (trace, (void *) (ip - 4))) {
use_libunwind = FALSE;
g_string_append (trace, ")\n");
unw_get_reg (&cursor, UNW_REG_IP, &ip);
if (append_debug_info (trace, dwfl, (void *) (ip - 4))) {
use_libunwind = FALSE;
g_string_append (trace, ")\n");
}
}
#endif /* HAVE_DW */
@ -2687,6 +2690,10 @@ generate_unwind_trace (void)
}
}
#ifdef HAVE_DW
dwfl_end (dwfl);
#endif
return g_string_free (trace, FALSE);
}