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