glibc/nptl_db/td_ta_get_nthreads.c

42 lines
1.3 KiB
C

/* Get the number of threads in the process.
Copyright (C) 1999-2013 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, see
<http://www.gnu.org/licenses/>. */
#include "thread_dbP.h"
td_err_e
td_ta_get_nthreads (const td_thragent_t *ta_arg, int *np)
{
td_thragent_t *const ta = (td_thragent_t *) ta_arg;
td_err_e err;
psaddr_t n;
LOG ("td_ta_get_nthreads");
/* Test whether the TA parameter is ok. */
if (! ta_ok (ta))
return TD_BADTA;
/* Access the variable in the inferior that tells us. */
err = DB_GET_VALUE (n, ta, __nptl_nthreads, 0);
if (err == TD_OK)
*np = (uintptr_t) n;
return err;
}