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/*
normalize.c
Copyright (C) 2010 Red Hat, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "normalize.h"
#include "frame.h"
#include "thread.h"
#include "backtrace.h"
#include <string.h>
void
btp_normalize_thread(struct btp_thread *thread)
{
btp_normalize_dbus_thread(thread);
btp_normalize_gdk_thread(thread);
btp_normalize_glib_thread(thread);
btp_normalize_glibc_thread(thread);
btp_normalize_libstdcpp_thread(thread);
btp_normalize_linux_thread(thread);
btp_normalize_xorg_thread(thread);
/* If the last frame has address 0x0000 and its name is '??',
* remove it. This frame is not really invalid, and it affects
* backtrace quality rating. See Red Hat Bugzilla bug #592523.
* @code
* #2 0x00007f4dcebbd62d in clone ()
* at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
* No locals.
* #3 0x0000000000000000 in ?? ()
* @endcode
*/
struct btp_frame *last = thread->frames;
while (last && last->next)
last = last->next;
if (last &&
last->address == 0x0000 &&
last->function_name &&
0 == strcmp(last->function_name, "??"))
{
btp_thread_remove_frame(thread, last);
}
}
void
btp_normalize_backtrace(struct btp_backtrace *backtrace)
{
struct btp_thread *thread = backtrace->threads;
while (thread)
{
btp_normalize_thread(thread);
thread = thread->next;
}
}
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