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/* Retrieve event.
Copyright (C) 1999, 2001, 2002 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, see
<http://www.gnu.org/licenses/>. */
#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");
/* If the thread descriptor has not yet been created there cannot be
any event. */
if (th->th_unique == NULL)
return TD_NOMSG;
/* 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;
}
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