linuxthreads_db/td_ta_clear_event.c

   1 /* Globally disable events.
   2    Copyright (C) 1999 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include "thread_dbP.h"
  22
  23
  24 td_err_e
  25 td_ta_clear_event (ta, event)
  26      const td_thragent_t *ta;
  27      td_thr_events_t *event;
  28 {
  29   td_thr_events_t old_event;
  30   int i;
  31
  32   LOG (__FUNCTION__);
  33
  34   /* Test whether the TA parameter is ok.  */
  35   if (! ta_ok (ta))
  36     return TD_BADTA;
  37
  38   /* Write the new value into the thread data structure.  */
  39   if (ps_pdread (ta->ph, ta->pthread_threads_eventsp,
  40                  &old_event, sizeof (td_thrhandle_t)) != PS_OK)
  41     return TD_ERR;      /* XXX Other error value?  */
  42
  43   /* Remove the set bits in.  */
  44   for (i = 0; i < TD_EVENTSIZE; ++i)
  45     old_event.event_bits[i] &= ~event->event_bits[i];
  46
  47   /* Write the new value into the thread data structure.  */
  48   if (ps_pdwrite (ta->ph, ta->pthread_threads_eventsp,
  49                   &old_event, sizeof (td_thrhandle_t)) != PS_OK)
  50     return TD_ERR;      /* XXX Other error value?  */
  51
  52   return TD_OK;
  53 }