gdb/python/py-event.h

   1 /* Python interface to inferior events.
   2
   3    Copyright (C) 2009-2021 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 #ifndef PYTHON_PY_EVENT_H
  21 #define PYTHON_PY_EVENT_H
  22
  23 #include "py-events.h"
  24 #include "command.h"
  25 #include "python-internal.h"
  26 #include "inferior.h"
  27
  28 /* Declare all event types.  */
  29 #define GDB_PY_DEFINE_EVENT_TYPE(name, py_name, doc, base) \
  30   extern PyTypeObject name##_event_object_type              \
  31         CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
  32 #include "py-event-types.def"
  33 #undef GDB_PY_DEFINE_EVENT_TYPE
  34
  35 struct event_object
  36 {
  37   PyObject_HEAD
  38
  39   PyObject *dict;
  40 };
  41
  42 extern int emit_continue_event (ptid_t ptid);
  43 extern int emit_exited_event (const LONGEST *exit_code, struct inferior *inf);
  44
  45 /* For inferior function call events, discriminate whether event is
  46    before or after the call. */
  47
  48 typedef enum
  49 {
  50   /* Before the call */
  51   INFERIOR_CALL_PRE,
  52   /* after the call */
  53   INFERIOR_CALL_POST,
  54 } inferior_call_kind;
  55
  56 extern int emit_inferior_call_event (inferior_call_kind kind,
  57                                      ptid_t thread, CORE_ADDR addr);
  58 extern int emit_register_changed_event (struct frame_info *frame,
  59                                         int regnum);
  60 extern int emit_memory_changed_event (CORE_ADDR addr, ssize_t len);
  61 extern int evpy_emit_event (PyObject *event,
  62                             eventregistry_object *registry);
  63
  64 extern gdbpy_ref<> create_event_object (PyTypeObject *py_type);
  65
  66 /* thread events can either be thread specific or process wide.  If gdb is
  67    running in non-stop mode then the event is thread specific, otherwise
  68    it is process wide.
  69    This function returns the currently stopped thread in non-stop mode and
  70    Py_None otherwise.  */
  71 extern gdbpy_ref<> py_get_event_thread (ptid_t ptid);
  72
  73 extern gdbpy_ref<> create_thread_event_object (PyTypeObject *py_type,
  74                                                PyObject *thread);
  75
  76 extern int emit_new_objfile_event (struct objfile *objfile);
  77 extern int emit_clear_objfiles_event (void);
  78
  79 extern void evpy_dealloc (PyObject *self);
  80 extern int evpy_add_attribute (PyObject *event,
  81                                const char *name, PyObject *attr)
  82   CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
  83 int gdbpy_initialize_event_generic (PyTypeObject *type, const char *name)
  84   CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
  85
  86 #endif /* PYTHON_PY_EVENT_H */