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66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/* Retrieve event.
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Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stddef.h>
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#include <string.h>
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#include "thread_dbP.h"
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td_err_e
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td_thr_event_getmsg (const td_thrhandle_t *th, td_event_msg_t *msg)
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{
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td_eventbuf_t event;
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LOG ("td_thr_event_getmsg");
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/* If the thread descriptor has not yet been created there cannot be
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any event. */
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if (th->th_unique == NULL)
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return TD_NOMSG;
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/* Read the even structure from the target. */
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if (ps_pdread (th->th_ta_p->ph,
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((char *) th->th_unique
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+ offsetof (struct _pthread_descr_struct, p_eventbuf)),
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&event, sizeof (td_eventbuf_t)) != PS_OK)
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return TD_ERR; /* XXX Other error value? */
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/* Check whether an event occurred. */
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if (event.eventnum == TD_EVENT_NONE)
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/* Nothing. */
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return TD_NOMSG;
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/* Fill the user's data structure. */
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msg->event = event.eventnum;
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msg->th_p = th;
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msg->msg.data = (uintptr_t) event.eventdata;
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/* And clear the event message in the target. */
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memset (&event, '\0', sizeof (td_eventbuf_t));
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if (ps_pdwrite (th->th_ta_p->ph,
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((char *) th->th_unique
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+ offsetof (struct _pthread_descr_struct, p_eventbuf)),
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&event, sizeof (td_eventbuf_t)) != PS_OK)
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return TD_ERR; /* XXX Other error value? */
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return TD_OK;
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}
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