py-threadevent.c revision 1.6 
1/* Copyright (C) 2009-2016 Free Software Foundation, Inc.
2
3   This file is part of GDB.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18#include "defs.h"
19#include "py-event.h"
20#include "infrun.h"
21
22/* thread events can either be thread specific or process wide.  If gdb is
23   running in non-stop mode then the event is thread specific, otherwise
24   it is process wide.
25   This function returns the currently stopped thread in non-stop mode and
26   Py_None otherwise.  In each case it returns a borrowed reference.  */
27
28static PyObject *get_event_thread (void)
29  CPYCHECKER_RETURNS_BORROWED_REF;
30
31static PyObject *
32get_event_thread (void)
33{
34  PyObject *thread = NULL;
35
36  if (non_stop)
37    thread = (PyObject *) find_thread_object (inferior_ptid);
38  else
39    thread = Py_None;
40
41  if (!thread)
42    {
43      PyErr_SetString (PyExc_RuntimeError, "Could not find event thread");
44      return NULL;
45    }
46
47  return thread;
48}
49
50PyObject *
51create_thread_event_object (PyTypeObject *py_type)
52{
53  PyObject *thread = NULL;
54  PyObject *thread_event_obj = NULL;
55
56  thread_event_obj = create_event_object (py_type);
57  if (!thread_event_obj)
58    goto fail;
59
60  thread = get_event_thread ();
61  if (!thread)
62    goto fail;
63
64  if (evpy_add_attribute (thread_event_obj,
65                          "inferior_thread",
66                          thread) < 0)
67    goto fail;
68
69  return thread_event_obj;
70
71  fail:
72   Py_XDECREF (thread_event_obj);
73   return NULL;
74}
75
76GDBPY_NEW_EVENT_TYPE (thread,
77                      "gdb.ThreadEvent",
78                      "ThreadEvent",
79                      "GDB thread event object",
80                      event_object_type);
81