Update.
[glibc.git] / nptl_db / td_thr_set_event.c
blob2bb0b9d1f82f32c2d723dae57214eba0d3267af4
1 /* Enable specific event for thread.
2 Copyright (C) 1999,2001,2002,2003 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
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.
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.
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. */
21 #include <stddef.h>
23 #include "thread_dbP.h"
26 td_err_e
27 td_thr_set_event (th, event)
28 const td_thrhandle_t *th;
29 td_thr_events_t *event;
31 td_err_e err;
32 psaddr_t eventmask;
33 void *copy;
35 LOG ("td_thr_set_event");
37 /* Fetch the old event mask from the inferior and modify it in place. */
38 err = DB_GET_FIELD_ADDRESS (eventmask, th->th_ta_p,
39 th->th_unique, pthread, eventbuf_eventmask, 0);
40 if (err == TD_OK)
41 err = DB_GET_STRUCT (copy, th->th_ta_p, eventmask, td_thr_events_t);
42 if (err == TD_OK)
44 uint32_t idx;
45 for (idx = 0; idx < TD_EVENTSIZE; ++idx)
47 psaddr_t word;
48 uint32_t mask;
49 err = DB_GET_FIELD_LOCAL (word, th->th_ta_p, copy,
50 td_thr_events_t, event_bits, idx);
51 if (err != TD_OK)
52 break;
53 mask = (uintptr_t) word;
54 mask |= event->event_bits[idx];
55 word = (psaddr_t) (uintptr_t) mask;
56 err = DB_PUT_FIELD_LOCAL (th->th_ta_p, copy,
57 td_thr_events_t, event_bits, idx, word);
58 if (err != TD_OK)
59 break;
61 if (err == TD_NOAPLIC)
63 err = TD_OK;
64 while (idx < TD_EVENTSIZE)
65 if (event->event_bits[idx++] != 0)
67 err = TD_NOEVENT;
68 break;
71 if (err == TD_OK)
72 /* Now write it back to the inferior. */
73 err = DB_PUT_STRUCT (th->th_ta_p, eventmask, td_thr_events_t, copy);
76 return err;