1 /* Python interface to inferior exit events.
2 
3    Copyright (C) 2009-2013 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);
92