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 #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
  28 static PyObject *get_event_thread (void)
  29   CPYCHECKER_RETURNS_BORROWED_REF;
  30
  31 static PyObject *
  32 get_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
  50 PyObject *
  51 create_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
  76 GDBPY_NEW_EVENT_TYPE (thread,
  77                       "gdb.ThreadEvent",
  78                       "ThreadEvent",
  79                       "GDB thread event object",
  80                       event_object_type,
  81                       /*no qual*/);