gdb/python/py-newobjfileevent.c

   1 /* Python interface to new object file loading events.
   2
   3    Copyright (C) 2011-2012 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 new_objfile_event_object_type;
  23
  24 static PyObject *
  25 create_new_objfile_event_object (struct objfile *objfile)
  26 {
  27   PyObject *objfile_event;
  28   PyObject *py_objfile = NULL;
  29
  30   objfile_event = create_event_object (&new_objfile_event_object_type);
  31   if (!objfile_event)
  32     goto fail;
  33
  34   py_objfile = objfile_to_objfile_object (objfile);
  35   if (!py_objfile || evpy_add_attribute (objfile_event,
  36                                          "new_objfile",
  37                                          py_objfile) < 0)
  38     goto fail;
  39   Py_DECREF (py_objfile);
  40
  41   return objfile_event;
  42
  43  fail:
  44   Py_XDECREF (py_objfile);
  45   Py_XDECREF (objfile_event);
  46   return NULL;
  47 }
  48
  49 /* Callback function which notifies observers when a new objfile event occurs.
  50    This function will create a new Python new_objfile event object.
  51    Return -1 if emit fails.  */
  52
  53 int
  54 emit_new_objfile_event (struct objfile *objfile)
  55 {
  56   PyObject *event;
  57
  58   if (evregpy_no_listeners_p (gdb_py_events.new_objfile))
  59     return 0;
  60
  61   event = create_new_objfile_event_object (objfile);
  62   if (event)
  63     return evpy_emit_event (event, gdb_py_events.new_objfile);
  64   return -1;
  65 }
  66
  67 GDBPY_NEW_EVENT_TYPE (new_objfile,
  68                       "gdb.NewObjFileEvent",
  69                       "NewObjFileEvent",
  70                       "GDB new object file event object",
  71                       event_object_type,
  72                       static);