glibc/linuxthreads_db/td_ta_get_nthreads.c

43 lines
1.5 KiB
C
Raw Normal View History

/* Get the number of threads in the process.
Copyright (C) 1999, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.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"
td_err_e
td_ta_get_nthreads (const td_thragent_t *ta, int *np)
{
psaddr_t addr;
2001-12-28 16:41:29 +00:00
LOG ("td_ta_get_nthreads");
/* Test whether the TA parameter is ok. */
if (! ta_ok (ta))
return TD_BADTA;
/* Access the variable `__pthread_handles_num'. */
if (td_lookup (ta->ph, PTHREAD_HANDLES_NUM, &addr) != PS_OK)
return TD_ERR; /* XXX Other error value? */
if (ps_pdread (ta->ph, addr, np, sizeof (int)) != PS_OK)
return TD_ERR; /* XXX Other error value? */
return TD_OK;
}