gdb/python/py-exitedevent.c

   1 /* Python interface to inferior exit events.
   2
   3    Copyright (C) 2009-2017 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 extern 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   gdbpy_ref<> exited_event (create_event_object (&exited_event_object_type));
  30
  31   if (exited_event == NULL)
  32     return NULL;
  33
  34   if (exit_code)
  35     {
  36       gdbpy_ref<> exit_code_obj (PyLong_FromLongLong (*exit_code));
  37
  38       if (exit_code_obj == NULL)
  39         return NULL;
  40       if (evpy_add_attribute (exited_event.get (), "exit_code",
  41                               exit_code_obj.get ()) < 0)
  42         return NULL;
  43     }
  44
  45   gdbpy_ref<> inf_obj (inferior_to_inferior_object (inf));
  46   if (inf_obj == NULL || evpy_add_attribute (exited_event.get (),
  47                                              "inferior",
  48                                              inf_obj.get ()) < 0)
  49     return NULL;
  50
  51   return exited_event.release ();
  52 }
  53
  54 /* Callback that is used when an exit event occurs.  This function
  55    will create a new Python exited event object.  */
  56
  57 int
  58 emit_exited_event (const LONGEST *exit_code, struct inferior *inf)
  59 {
  60   if (evregpy_no_listeners_p (gdb_py_events.exited))
  61     return 0;
  62
  63   gdbpy_ref<> event (create_exited_event_object (exit_code, inf));
  64
  65   if (event != NULL)
  66     return evpy_emit_event (event.get (), gdb_py_events.exited);
  67
  68   return -1;
  69 }
  70
  71
  72 GDBPY_NEW_EVENT_TYPE (exited,
  73                       "gdb.ExitedEvent",
  74                       "ExitedEvent",
  75                       "GDB exited event object",
  76                       event_object_type);