gdb/python/py-newobjfileevent.c - gdb

Functions defined

Source code

  1. /* Python interface to new object file loading events.

  3.    Copyright (C) 2011-2015 Free Software Foundation, Inc.

  5.    This file is part of GDB.

  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.

  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.

  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/>.  */

  20. #include "defs.h"
  21. #include "py-event.h"

  23. static PyTypeObject new_objfile_event_object_type
  24.     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
  25. static PyTypeObject clear_objfiles_event_object_type
  26.     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");

  28. static PyObject *
  29. ‌create_new_objfile_event_object (struct objfile *objfile)
  30. {
  31.   PyObject *objfile_event;
  32.   PyObject *py_objfile;

  34.   objfile_event = create_event_object (&new_objfile_event_object_type);
  35.   if (!objfile_event)
  36.     goto fail;

  38.   /* Note that objfile_to_objfile_object returns a borrowed reference,
  39.      so we don't need a decref here.  */
  40.   py_objfile = objfile_to_objfile_object (objfile);
  41.   if (!py_objfile || evpy_add_attribute (objfile_event,
  42.                                          "new_objfile",
  43.                                          py_objfile) < 0)
  44.     goto fail;

  46.   return objfile_event;

  48. fail:
  49.   Py_XDECREF (objfile_event);
  50.   return NULL;
  51. }

  53. /* Callback function which notifies observers when a new objfile event occurs.
  54.    This function will create a new Python new_objfile event object.
  55.    Return -1 if emit fails.  */

  57. int
  58. ‌emit_new_objfile_event (struct objfile *objfile)
  59. {
  60.   PyObject *event;

  62.   if (evregpy_no_listeners_p (gdb_py_events.new_objfile))
  63.     return 0;

  65.   event = create_new_objfile_event_object (objfile);
  66.   if (event)
  67.     return evpy_emit_event (event, gdb_py_events.new_objfile);
  68.   return -1;
  69. }

  71. GDBPY_NEW_EVENT_TYPE (new_objfile,
  72.                       "gdb.NewObjFileEvent",
  73.                       "NewObjFileEvent",
  74.                       "GDB new object file event object",
  75.                       event_object_type,
  76.                       static);

  78. /* Subroutine of emit_clear_objfiles_event to simplify it.  */

  80. static PyObject *
  81. ‌create_clear_objfiles_event_object (void)
  82. {
  83.   PyObject *objfile_event;
  84.   PyObject *py_progspace;

  86.   objfile_event = create_event_object (&clear_objfiles_event_object_type);
  87.   if (!objfile_event)
  88.     goto fail;

  90.   /* Note that pspace_to_pspace_object returns a borrowed reference,
  91.      so we don't need a decref here.  */
  92.   py_progspace = pspace_to_pspace_object (current_program_space);
  93.   if (!py_progspace || evpy_add_attribute (objfile_event,
  94.                                            "progspace",
  95.                                            py_progspace) < 0)
  96.     goto fail;

  98.   return objfile_event;

  100. fail:
  101.   Py_XDECREF (objfile_event);
  102.   return NULL;
  103. }

  105. /* Callback function which notifies observers when the "clear objfiles"
  106.    event occurs.
  107.    This function will create a new Python clear_objfiles event object.
  108.    Return -1 if emit fails.  */

  110. int
  111. ‌emit_clear_objfiles_event (void)
  112. {
  113.   PyObject *event;

  115.   if (evregpy_no_listeners_p (gdb_py_events.clear_objfiles))
  116.     return 0;

  118.   event = create_clear_objfiles_event_object ();
  119.   if (event)
  120.     return evpy_emit_event (event, gdb_py_events.clear_objfiles);
  121.   return -1;
  122. }

  124. GDBPY_NEW_EVENT_TYPE (clear_objfiles,
  125.                       "gdb.ClearObjFilesEvent",
  126.                       "ClearObjFilesEvent",
  127.                       "GDB clear object files event object",
  128.                       event_object_type,
  129.                       static);