mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-20 17:51:16 +00:00
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* Validate a thread handle.
|
|
Copyright (C) 1999,2001,2002,2003,2004,2007 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include "thread_dbP.h"
|
|
#include <stdbool.h>
|
|
|
|
static td_err_e
|
|
check_thread_list (const td_thrhandle_t *th, psaddr_t head, bool *uninit)
|
|
{
|
|
td_err_e err;
|
|
psaddr_t next, ofs;
|
|
|
|
err = DB_GET_FIELD (next, th->th_ta_p, head, list_t, next, 0);
|
|
if (err == TD_OK)
|
|
{
|
|
if (next == 0)
|
|
{
|
|
*uninit = true;
|
|
return TD_NOTHR;
|
|
}
|
|
err = DB_GET_FIELD_ADDRESS (ofs, th->th_ta_p, 0, pthread, list, 0);
|
|
}
|
|
|
|
while (err == TD_OK)
|
|
{
|
|
if (next == head)
|
|
return TD_NOTHR;
|
|
|
|
if (next - (ofs - (psaddr_t) 0) == th->th_unique)
|
|
return TD_OK;
|
|
|
|
err = DB_GET_FIELD (next, th->th_ta_p, next, list_t, next, 0);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
|
|
td_err_e
|
|
td_thr_validate (const td_thrhandle_t *th)
|
|
{
|
|
td_err_e err;
|
|
psaddr_t list;
|
|
|
|
LOG ("td_thr_validate");
|
|
|
|
/* First check the list with threads using user allocated stacks. */
|
|
bool uninit = false;
|
|
err = DB_GET_SYMBOL (list, th->th_ta_p, __stack_user);
|
|
if (err == TD_OK)
|
|
err = check_thread_list (th, list, &uninit);
|
|
|
|
/* If our thread is not on this list search the list with stack
|
|
using implementation allocated stacks. */
|
|
if (err == TD_NOTHR)
|
|
{
|
|
err = DB_GET_SYMBOL (list, th->th_ta_p, stack_used);
|
|
if (err == TD_OK)
|
|
err = check_thread_list (th, list, &uninit);
|
|
|
|
if (err == TD_NOTHR && uninit && th->th_unique == 0)
|
|
/* __pthread_initialize_minimal has not run yet.
|
|
There is only the special case thread handle. */
|
|
err = TD_OK;
|
|
}
|
|
|
|
return err;
|
|
}
|