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New python event "clear_objfiles".

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If one is watching new_objfile events in python, it helps to know
when the list of objfiles is cleared.  This patch adds a new
clear_objfiles event to support this.

This patch is all just cut-n-paste-n-tweak derived from
the new_objfiles event.

gdb/ChangeLog:

	* 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.

gdb/doc/ChangeLog:

	* python.texi (Events In Python): Document clear_objfiles event.

gdb/testsuite/ChangeLog:

	* gdb.python/py-events.exp: Update expected output for clear_objfiles
	event.
	* gdb.python/py-events.py: Add clear_objfiles event.
This commit is contained in:
Doug Evans
2014-10-17 11:12:17 -07:00
parent d096d8c11e
commit 4ffbba72f3
14 changed files with 126 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
gdb/python/py-inferior.c
View File

@ -137,23 +137,32 @@ python_inferior_exit (struct inferior *inf)
}
/* 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);
}