+2014-10-17 Doug Evans <dje@google.com>
+
+ * NEWS: Mention new event gdb.clear_objfiles.
+ * python/py-event.h (emit_clear_objfiles_event): Clear
+ * python/py-events.h (events_object): New member clear_objfiles.
+ * python/py-evts.c (gdbpy_initialize_py_events): Add clear_objfiles
+ event.
+ * python/py-inferior.c (python_new_objfile): If objfile is NULL,
+ emit clear_objfiles event.
+ * python/py-newobjfileevent.c (create_clear_objfiles_event_object): New
+ function.
+ (emit_clear_objfiles_event): New function.
+ (clear_objfiles): New event.
+ * python/python-internal.h (gdbpy_initialize_clear_objfiles_event):
+ Declare.
+ * python/python.c (_initialize_python): Call
+ gdbpy_initialize_clear_objfiles_event.
+
2014-10-17 Doug Evans <dje@google.com>
* NEWS: Mention new gdb.Objfile.progspace attribute.
** New attribute 'producer' for gdb.Symtab objects.
** gdb.Objfile objects have a new attribute "progspace",
which is the gdb.Progspace object of the containing program space.
+ ** A new event "gdb.clear_objfiles" has been added, triggered when
+ selecting a new file to debug.
* New Python-based convenience functions:
+2014-10-17 Doug Evans <dje@google.com>
+
+ * python.texi (Events In Python): Document clear_objfiles event.
+
2014-10-17 Doug Evans <dje@google.com>
* python.texi (Objfiles In Python): Document new progspace attribute.
@xref{Objfiles In Python}, for details of the @code{gdb.Objfile} object.
@end defvar
+@item events.clear_objfiles
+Emits @code{gdb.ClearObjFilesEvent} which indicates that the list of object
+files for a program space has been reset.
+@code{gdb.ClearObjFilesEvent} has one attribute:
+
+@defvar ClearObjFilesEvent.progspace
+A reference to the program space (@code{gdb.Progspace}) whose objfile list has
+been cleared. @xref{Progspaces In Python}.
+@end defvar
+
@end table
@node Threads In Python
extern PyObject *create_event_object (PyTypeObject *py_type);
extern PyObject *create_thread_event_object (PyTypeObject *py_type);
extern int emit_new_objfile_event (struct objfile *objfile);
+extern int emit_clear_objfiles_event (void);
extern void evpy_dealloc (PyObject *self);
extern int evpy_add_attribute (PyObject *event,
eventregistry_object *cont;
eventregistry_object *exited;
eventregistry_object *new_objfile;
+ eventregistry_object *clear_objfiles;
PyObject *module;
if (add_new_registry (&gdb_py_events.new_objfile, "new_objfile") < 0)
return -1;
+ if (add_new_registry (&gdb_py_events.clear_objfiles, "clear_objfiles") < 0)
+ return -1;
+
if (gdb_pymodule_addobject (gdb_module,
"events",
(PyObject *) gdb_py_events.module) < 0)
}
/* Callback used to notify Python listeners about new objfiles loaded in the
- inferior. */
+ inferior. OBJFILE may be NULL which means that the objfile list has been
+ cleared (emptied). */
static void
python_new_objfile (struct objfile *objfile)
{
struct cleanup *cleanup;
- if (objfile == NULL)
- return;
-
if (!gdb_python_initialized)
return;
- cleanup = ensure_python_env (get_objfile_arch (objfile), current_language);
+ cleanup = ensure_python_env (objfile != NULL
+ ? get_objfile_arch (objfile)
+ : target_gdbarch (),
+ current_language);
- if (emit_new_objfile_event (objfile) < 0)
- gdbpy_print_stack ();
+ if (objfile == NULL)
+ {
+ if (emit_clear_objfiles_event () < 0)
+ gdbpy_print_stack ();
+ }
+ else
+ {
+ if (emit_new_objfile_event (objfile) < 0)
+ gdbpy_print_stack ();
+ }
do_cleanups (cleanup);
}
static PyTypeObject new_objfile_event_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
+static PyTypeObject clear_objfiles_event_object_type
+ CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
static PyObject *
create_new_objfile_event_object (struct objfile *objfile)
"GDB new object file event object",
event_object_type,
static);
+\f
+/* Subroutine of emit_clear_objfiles_event to simplify it. */
+
+static PyObject *
+create_clear_objfiles_event_object (void)
+{
+ PyObject *objfile_event;
+ PyObject *py_progspace;
+
+ objfile_event = create_event_object (&clear_objfiles_event_object_type);
+ if (!objfile_event)
+ goto fail;
+
+ /* Note that pspace_to_pspace_object returns a borrowed reference,
+ so we don't need a decref here. */
+ py_progspace = pspace_to_pspace_object (current_program_space);
+ if (!py_progspace || evpy_add_attribute (objfile_event,
+ "progspace",
+ py_progspace) < 0)
+ goto fail;
+
+ return objfile_event;
+
+ fail:
+ Py_XDECREF (objfile_event);
+ return NULL;
+}
+
+/* Callback function which notifies observers when the "clear objfiles"
+ event occurs.
+ This function will create a new Python clear_objfiles event object.
+ Return -1 if emit fails. */
+
+int
+emit_clear_objfiles_event (void)
+{
+ PyObject *event;
+
+ if (evregpy_no_listeners_p (gdb_py_events.clear_objfiles))
+ return 0;
+
+ event = create_clear_objfiles_event_object ();
+ if (event)
+ return evpy_emit_event (event, gdb_py_events.clear_objfiles);
+ return -1;
+}
+
+GDBPY_NEW_EVENT_TYPE (clear_objfiles,
+ "gdb.ClearObjFilesEvent",
+ "ClearObjFilesEvent",
+ "GDB clear object files event object",
+ event_object_type,
+ static);
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_new_objfile_event (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
+int gdbpy_initialize_clear_objfiles_event (void)
+ CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_arch (void)
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_xmethods (void)
|| gdbpy_initialize_exited_event () < 0
|| gdbpy_initialize_thread_event () < 0
|| gdbpy_initialize_new_objfile_event () < 0
+ || gdbpy_initialize_clear_objfiles_event () < 0
|| gdbpy_initialize_arch () < 0
|| gdbpy_initialize_xmethods () < 0)
goto fail;
+2014-10-17 Doug Evans <dje@google.com>
+
+ * gdb.python/py-events.exp: Update expected output for clear_objfiles
+ event.
+ * gdb.python/py-events.py: Add clear_objfiles event.
+
2014-10-17 Doug Evans <dje@google.com>
* gdb.python/py-objfile.exp: Test progspace attribute.
#test exited event.
gdb_test "continue" ".*event type: continue.*
+.*clear_objfiles\[\r\n\]*progspace: .*py-events.*
.*event type: exit.*
.*exit code: 12.*
.*exit inf: 1.*
print ("event type: new_objfile")
print ("new objfile name: %s" % (event.new_objfile.filename))
+def clear_objfiles_handler (event):
+ assert (isinstance (event, gdb.ClearObjFilesEvent))
+ print ("event type: clear_objfiles")
+ print ("progspace: %s" % (event.progspace.filename))
+
class test_events (gdb.Command):
"""Test events."""
def invoke (self, arg, from_tty):
gdb.events.new_objfile.connect (new_objfile_handler)
+ gdb.events.clear_objfiles.connect (clear_objfiles_handler)
print ("Object file events registered.")
test_newobj_events ()
projects / binutils-gdb.git / commitdiff