gdb/python/py-threadevent.c

   1 /* Copyright (C) 2009-2014 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 *get_event_thread (void)
  28   CPYCHECKER_RETURNS_BORROWED_REF;
  29
  30 static PyObject *
  31 get_event_thread (void)
  32 {
  33   PyObject *thread = NULL;
  34
  35   if (non_stop)
  36     thread = (PyObject *) find_thread_object (inferior_ptid);
  37   else
  38     thread = Py_None;
  39
  40   if (!thread)
  41     {
  42       PyErr_SetString (PyExc_RuntimeError, "Could not find event thread");
  43       return NULL;
  44     }
  45
  46   return thread;
  47 }
  48
  49 PyObject *
  50 create_thread_event_object (PyTypeObject *py_type)
  51 {
  52   PyObject *thread = NULL;
  53   PyObject *thread_event_obj = NULL;
  54
  55   thread_event_obj = create_event_object (py_type);
  56   if (!thread_event_obj)
  57     goto fail;
  58
  59   thread = get_event_thread ();
  60   if (!thread)
  61     goto fail;
  62
  63   if (evpy_add_attribute (thread_event_obj,
  64                           "inferior_thread",
  65                           thread) < 0)
  66     goto fail;
  67
  68   return thread_event_obj;
  69
  70   fail:
  71    Py_XDECREF (thread_event_obj);
  72    return NULL;
  73 }
  74
  75 GDBPY_NEW_EVENT_TYPE (thread,
  76                       "gdb.ThreadEvent",
  77                       "ThreadEvent",
  78                       "GDB thread event object",
  79                       event_object_type,
  80                       /*no qual*/);