gdb/python/py-exitedevent.c

   1 /* Python interface to inferior exit events.
   2
   3    Copyright (C) 2009-2014 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 "defs.h"
  21 #include "py-event.h"
  22
  23 static PyTypeObject exited_event_object_type
  24     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
  25
  26 static PyObject *
  27 create_exited_event_object (const LONGEST *exit_code, struct inferior *inf)
  28 {
  29   PyObject *exited_event;
  30   PyObject *inf_obj = NULL;
  31
  32   exited_event = create_event_object (&exited_event_object_type);
  33
  34   if (!exited_event)
  35     goto fail;
  36
  37   if (exit_code)
  38     {
  39       PyObject *exit_code_obj = PyLong_FromLongLong (*exit_code);
  40       int failed;
  41
  42       if (exit_code_obj == NULL)
  43         goto fail;
  44
  45       failed = evpy_add_attribute (exited_event, "exit_code",
  46                                    exit_code_obj) < 0;
  47       Py_DECREF (exit_code_obj);
  48       if (failed)
  49         goto fail;
  50     }
  51
  52   inf_obj = inferior_to_inferior_object (inf);
  53   if (!inf_obj || evpy_add_attribute (exited_event,
  54                                       "inferior",
  55                                       inf_obj) < 0)
  56     goto fail;
  57   Py_DECREF (inf_obj);
  58
  59   return exited_event;
  60
  61  fail:
  62   Py_XDECREF (inf_obj);
  63   Py_XDECREF (exited_event);
  64   return NULL;
  65 }
  66
  67 /* Callback that is used when an exit event occurs.  This function
  68    will create a new Python exited event object.  */
  69
  70 int
  71 emit_exited_event (const LONGEST *exit_code, struct inferior *inf)
  72 {
  73   PyObject *event;
  74
  75   if (evregpy_no_listeners_p (gdb_py_events.exited))
  76     return 0;
  77
  78   event = create_exited_event_object (exit_code, inf);
  79
  80   if (event)
  81     return evpy_emit_event (event, gdb_py_events.exited);
  82
  83   return -1;
  84 }
  85
  86
  87 GDBPY_NEW_EVENT_TYPE (exited,
  88                       "gdb.ExitedEvent",
  89                       "ExitedEvent",
  90                       "GDB exited event object",
  91                       event_object_type,
  92                       static);