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glibc  2.9
td_ta_get_nthreads.c
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00001 /* Get the number of threads in the process.
00002    Copyright (C) 1999,2001,2002,2003 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #include "thread_dbP.h"
00022 
00023 td_err_e
00024 td_ta_get_nthreads (const td_thragent_t *ta_arg, int *np)
00025 {
00026   td_thragent_t *const ta = (td_thragent_t *) ta_arg;
00027   td_err_e err;
00028   psaddr_t n;
00029 
00030   LOG ("td_ta_get_nthreads");
00031 
00032   /* Test whether the TA parameter is ok.  */
00033   if (! ta_ok (ta))
00034     return TD_BADTA;
00035 
00036   /* Access the variable in the inferior that tells us.  */
00037   err = DB_GET_VALUE (n, ta, __nptl_nthreads, 0);
00038   if (err == TD_OK)
00039     *np = (uintptr_t) n;
00040 
00041   return err;
00042 }