libpthread/linuxthreads_db/td_ta_clear_event.c

   1 /* Globally disable events.
   2    Copyright (C) 1999, 2001, 2005 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include "thread_dbP.h"
  21
  22
  23 td_err_e
  24 td_ta_clear_event(const td_thragent_t *ta,td_thr_events_t *event)
  25 {
  26   td_thr_events_t old_event;
  27   int i;
  28
  29   LOG ("td_ta_clear_event");
  30
  31   /* Test whether the TA parameter is ok.  */
  32   if (! ta_ok (ta))
  33     return TD_BADTA;
  34
  35   /* Write the new value into the thread data structure.  */
  36   if (ps_pdread (ta->ph, ta->pthread_threads_eventsp,
  37                  &old_event, sizeof (td_thr_events_t)) != PS_OK)
  38     return TD_ERR;      /* XXX Other error value?  */
  39
  40   /* Remove the set bits in.  */
  41   for (i = 0; i < TD_EVENTSIZE; ++i)
  42     old_event.event_bits[i] &= ~event->event_bits[i];
  43
  44   /* Write the new value into the thread data structure.  */
  45   if (ps_pdwrite (ta->ph, ta->pthread_threads_eventsp,
  46                   &old_event, sizeof (td_thr_events_t)) != PS_OK)
  47     return TD_ERR;      /* XXX Other error value?  */
  48
  49   return TD_OK;
  50 }