1 /* Disable specific event for thread.
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 <stddef.h>
22
23 #include "thread_dbP.h"
24
25
26 td_err_e
td_thr_clear_event(th,event)27 td_thr_clear_event (th, event)
28 const td_thrhandle_t *th;
29 td_thr_events_t *event;
30 {
31 td_thr_events_t old_event;
32 int i;
33
34 LOG ("td_thr_clear_event");
35
36 /* Write the new value into the thread data structure. */
37 if (ps_pdread (th->th_ta_p->ph,
38 ((char *) th->th_unique
39 + offsetof (struct _pthread_descr_struct,
40 p_eventbuf.eventmask)),
41 &old_event, sizeof (td_thrhandle_t)) != PS_OK)
42 return TD_ERR; /* XXX Other error value? */
43
44 /* Remove the set bits in. */
45 for (i = 0; i < TD_EVENTSIZE; ++i)
46 old_event.event_bits[i] &= ~event->event_bits[i];
47
48 /* Write the new value into the thread data structure. */
49 if (ps_pdwrite (th->th_ta_p->ph,
50 ((char *) th->th_unique
51 + offsetof (struct _pthread_descr_struct,
52 p_eventbuf.eventmask)),
53 &old_event, sizeof (td_thrhandle_t)) != PS_OK)
54 return TD_ERR; /* XXX Other error value? */
55
56 return TD_OK;
57 }
58