gdb/python/py-threadevent.c

   1 /* Copyright (C) 2009-2012 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 "py-event.h"
  19
  20 /* thread events can either be thread specific or process wide.  If gdb is
  21    running in non-stop mode then the event is thread specific, otherwise
  22    it is process wide.
  23    This function returns the currently stopped thread in non-stop mode and
  24    Py_None otherwise.  */
  25
  26 static PyObject *
  27 get_event_thread (void)
  28 {
  29   PyObject *thread = NULL;
  30
  31   if (non_stop)
  32     thread = (PyObject *) find_thread_object (inferior_ptid);
  33   else
  34     thread = Py_None;
  35
  36   if (!thread)
  37     {
  38       PyErr_SetString (PyExc_RuntimeError, "Could not find event thread");
  39       return NULL;
  40     }
  41
  42   Py_INCREF (thread);
  43
  44   return thread;
  45 }
  46
  47 PyObject *
  48 create_thread_event_object (PyTypeObject *py_type)
  49 {
  50   PyObject *thread = NULL;
  51   PyObject *thread_event_obj = NULL;
  52
  53   thread_event_obj = create_event_object (py_type);
  54   if (!thread_event_obj)
  55     goto fail;
  56
  57   thread = get_event_thread ();
  58   if (!thread)
  59     goto fail;
  60
  61   if (evpy_add_attribute (thread_event_obj,
  62                           "inferior_thread",
  63                           thread) < 0)
  64     goto fail;
  65
  66   return thread_event_obj;
  67
  68   fail:
  69    Py_XDECREF (thread_event_obj);
  70    return NULL;
  71 }
  72
  73 GDBPY_NEW_EVENT_TYPE (thread,
  74                       "gdb.ThreadEvent",
  75                       "ThreadEvent",
  76                       "GDB thread event object",
  77                       event_object_type,
  78                       /*no qual*/);