gdb/python/py-threadevent.c

   1 /* Copyright (C) 2009-2018 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 #include "gdbthread.h"
  22
  23 /* thread events can either be thread specific or process wide.  If gdb is
  24    running in non-stop mode then the event is thread specific, otherwise
  25    it is process wide.
  26    This function returns the currently stopped thread in non-stop mode and
  27    Py_None otherwise.  In each case it returns a borrowed reference.  */
  28
  29 static PyObject *get_event_thread (void)
  30   CPYCHECKER_RETURNS_BORROWED_REF;
  31
  32 static PyObject *
  33 get_event_thread (void)
  34 {
  35   PyObject *thread;
  36
  37   if (non_stop)
  38     thread = (PyObject *) thread_to_thread_object (inferior_thread ());
  39   else
  40     thread = Py_None;
  41
  42   if (!thread)
  43     {
  44       PyErr_SetString (PyExc_RuntimeError, "Could not find event thread");
  45       return NULL;
  46     }
  47
  48   return thread;
  49 }
  50
  51 gdbpy_ref<>
  52 create_thread_event_object (PyTypeObject *py_type, PyObject *thread)
  53 {
  54   gdbpy_ref<> thread_event_obj (create_event_object (py_type));
  55   if (thread_event_obj == NULL)
  56     return NULL;
  57
  58   if (thread == NULL)
  59     {
  60       thread = get_event_thread ();
  61       if (!thread)
  62         return NULL;
  63     }
  64
  65   if (evpy_add_attribute (thread_event_obj.get (),
  66                           "inferior_thread",
  67                           thread) < 0)
  68     return NULL;
  69
  70   return thread_event_obj;
  71 }