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/* Enable specific event for thread.

   Copyright (C) 1999 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 <stddef.h>

#include "thread_dbP.h"

td_err_e

td_thr_set_event (th, event)

     const td_thrhandle_t *th;

     td_thr_events_t *event;

{

  td_thr_events_t old_event;

  int i;

  LOG ("td_thr_set_event");

  /* Write the new value into the thread data structure.  */

  if (ps_pdread (th->th_ta_p->ph,

                 ((char *) th->th_unique

                  + offsetof (struct _pthread_descr_struct,

                              p_eventbuf.eventmask)),

                 &old_event, sizeof (td_thrhandle_t)) != PS_OK)

    return TD_ERR;      /* XXX Other error value?  */

  /* Or the new bits in.  */

  for (i = 0; i < TD_EVENTSIZE; ++i)

    old_event.event_bits[i] |= event->event_bits[i];

  /* Write the new value into the thread data structure.  */

  if (ps_pdwrite (th->th_ta_p->ph,

                  ((char *) th->th_unique

                   + offsetof (struct _pthread_descr_struct,

                               p_eventbuf.eventmask)),

                  &old_event, sizeof (td_thrhandle_t)) != PS_OK)

    return TD_ERR;      /* XXX Other error value?  */

  return TD_OK;

}