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