gdb/python/py-exitedevent.c

   1 /* Python interface to inferior exit events.
   2
   3    Copyright (C) 2009-2012 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "py-event.h"
  21
  22 static PyTypeObject exited_event_object_type;
  23
  24 static PyObject *
  25 create_exited_event_object (const LONGEST *exit_code, struct inferior *inf)
  26 {
  27   PyObject *exited_event;
  28   PyObject *inf_obj = NULL;
  29
  30   exited_event = create_event_object (&exited_event_object_type);
  31
  32   if (!exited_event)
  33     goto fail;
  34
  35   if (exit_code)
  36     {
  37       PyObject *exit_code_obj = PyLong_FromLongLong (*exit_code);
  38       int failed;
  39
  40       if (exit_code_obj == NULL)
  41         goto fail;
  42
  43       failed = evpy_add_attribute (exited_event, "exit_code",
  44                                    exit_code_obj) < 0;
  45       Py_DECREF (exit_code_obj);
  46       if (failed)
  47         goto fail;
  48     }
  49
  50   inf_obj = inferior_to_inferior_object (inf);
  51   if (!inf_obj || evpy_add_attribute (exited_event,
  52                                       "inferior",
  53                                       inf_obj) < 0)
  54     goto fail;
  55   Py_DECREF (inf_obj);
  56
  57   return exited_event;
  58
  59  fail:
  60   Py_XDECREF (inf_obj);
  61   Py_XDECREF (exited_event);
  62   return NULL;
  63 }
  64
  65 /* Callback that is used when an exit event occurs.  This function
  66    will create a new Python exited event object.  */
  67
  68 int
  69 emit_exited_event (const LONGEST *exit_code, struct inferior *inf)
  70 {
  71   PyObject *event;
  72
  73   if (evregpy_no_listeners_p (gdb_py_events.exited))
  74     return 0;
  75
  76   event = create_exited_event_object (exit_code, inf);
  77
  78   if (event)
  79     return evpy_emit_event (event, gdb_py_events.exited);
  80
  81   return -1;
  82 }
  83
  84
  85 GDBPY_NEW_EVENT_TYPE (exited,
  86                       "gdb.ExitedEvent",
  87                       "ExitedEvent",
  88                       "GDB exited event object",
  89                       event_object_type,
  90                       static);