2 Copyright (C) 1999-2015 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, see
18 <http://www.gnu.org/licenses/>. */
23 #include "thread_dbP.h"
27 td_ta_event_getmsg (const td_thragent_t *ta_arg, td_event_msg_t *msg)
29 td_thragent_t *const ta = (td_thragent_t *) ta_arg;
31 psaddr_t eventbuf, eventnum, eventdata;
35 /* XXX I cannot think of another way but using a static variable. */
36 /* XXX Use at least __thread once it is possible. */
37 static td_thrhandle_t th;
39 LOG ("td_thr_event_getmsg");
41 /* Test whether the TA parameter is ok. */
45 /* Get the pointer to the thread descriptor with the last event. */
46 err = DB_GET_VALUE (thp, ta, __nptl_last_event, 0);
51 /* Nothing waiting. */
54 /* Copy the event message buffer in from the inferior. */
55 err = DB_GET_FIELD_ADDRESS (eventbuf, ta, thp, pthread, eventbuf, 0);
57 err = DB_GET_STRUCT (copy, ta, eventbuf, td_eventbuf_t);
61 /* Read the event details from the target thread. */
62 err = DB_GET_FIELD_LOCAL (eventnum, ta, copy, td_eventbuf_t, eventnum, 0);
65 /* If the structure is on the list there better be an event recorded. */
66 if ((int) (uintptr_t) eventnum == TD_EVENT_NONE)
69 /* Fill the user's data structure. */
70 err = DB_GET_FIELD_LOCAL (eventdata, ta, copy, td_eventbuf_t, eventdata, 0);
74 /* Generate the thread descriptor. */
75 th.th_ta_p = (td_thragent_t *) ta;
78 /* Fill the user's data structure. */
79 msg->msg.data = (uintptr_t) eventdata;
80 msg->event = (uintptr_t) eventnum;
83 /* And clear the event message in the target. */
84 memset (copy, 0, ta->ta_sizeof_td_eventbuf_t);
85 err = DB_PUT_STRUCT (ta, eventbuf, td_eventbuf_t, copy);
89 /* Get the pointer to the next descriptor with an event. */
90 err = DB_GET_FIELD (next, ta, thp, pthread, nextevent, 0);
94 /* Store the pointer in the list head variable. */
95 err = DB_PUT_VALUE (ta, __nptl_last_event, 0, next);
100 /* Clear the next pointer in the current descriptor. */
101 err = DB_PUT_FIELD (ta, thp, pthread, nextevent, 0, 0);