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/* Retrieve event.

   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 <string.h>

#include "thread_dbP.h"

td_err_e

td_thr_event_getmsg (const td_thrhandle_t *th, td_event_msg_t *msg)

{

  td_eventbuf_t event;

  LOG ("td_thr_event_getmsg");

  /* Read the even structure from the target.  */

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

                 ((char *) th->th_unique

                  + offsetof (struct _pthread_descr_struct, p_eventbuf)),

                 &event, sizeof (td_eventbuf_t)) != PS_OK)

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

  /* Check whether an event occurred.  */

  if (event.eventnum == TD_EVENT_NONE)

    /* Nothing.  */

    return TD_NOMSG;

  /* Fill the user's data structure.  */

  msg->event = event.eventnum;

  msg->th_p = th;

  msg->msg.data = (uintptr_t) event.eventdata;

  /* And clear the event message in the target.  */

  memset (&event, '\0', sizeof (td_eventbuf_t));

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

                  ((char *) th->th_unique

                   + offsetof (struct _pthread_descr_struct, p_eventbuf)),

                  &event, sizeof (td_eventbuf_t)) != PS_OK)

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

  return TD_OK;

}