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author | Tom Tromey <tom@tromey.com> | 2017-09-05 12:07:00 -0600 |
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committer | Tom Tromey <tom@tromey.com> | 2017-09-11 14:15:20 -0600 |
commit | 7c96f8c1dae023c7d0b1cabc5e50c4d18fd06960 (patch) | |
tree | d842c8f82408e17bde8e8e27a298d7c24a65f91c /gdb/python/py-inferior.c | |
parent | 4ec521f238627f7682306d699c8826390a2cc9e7 (diff) | |
download | gdb-7c96f8c1dae023c7d0b1cabc5e50c4d18fd06960.zip gdb-7c96f8c1dae023c7d0b1cabc5e50c4d18fd06960.tar.gz gdb-7c96f8c1dae023c7d0b1cabc5e50c4d18fd06960.tar.bz2 |
Add new_inferior, inferior_deleted, and new_thread events
This adds a few new events to gdb's Python layer: new_inferior,
inferior_deleted, and new_thread. I wanted to be able to add a
combined inferior/thread display window to my GUI, and I needed a few
events to make this work. This is PR python/15622.
ChangeLog
2017-09-11 Tom Tromey <tom@tromey.com>
PR python/15622:
* NEWS: Add entry.
* python/python.c (do_start_initialization): Initialize new event
types.
* python/python-internal.h (gdbpy_initialize_new_inferior_event)
(gdbpy_initialize_inferior_deleted_event)
(gdbpy_initialize_new_thread_event): Declare.
* python/py-threadevent.c (create_thread_event_object): Add option
"thread" parameter.
* python/py-inferior.c (new_thread_event_object_type)
(new_inferior_event_object_type)
(inferior_deleted_event_object_type): Declare.
(python_new_inferior, python_inferior_deleted): New functions.
(add_thread_object): Emit new_thread event.
(gdbpy_initialize_inferior): Attach new functions to corresponding
observers.
(new_thread, new_inferior, inferior_deleted): Define new event
types.
* python/py-evts.c (gdbpy_initialize_py_events): Add new
registries.
* python/py-events.h (events_object) <new_inferior,
inferior_deleted, new_thread>: New fields.
* python/py-event.h (create_thread_event_breakpoint): Add optional
"thread" parameter.
doc/ChangeLog
2017-09-11 Tom Tromey <tom@tromey.com>
* python.texi (Events In Python): Document new events.
testsuite/ChangeLog
2017-09-11 Tom Tromey <tom@tromey.com>
* gdb.python/py-infthread.exp: Add tests for new_thread event.
* gdb.python/py-inferior.exp: Add tests for new inferior events.
Diffstat (limited to 'gdb/python/py-inferior.c')
-rw-r--r-- | gdb/python/py-inferior.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/gdb/python/py-inferior.c b/gdb/python/py-inferior.c index f6a24a0..d7c6810 100644 --- a/gdb/python/py-inferior.c +++ b/gdb/python/py-inferior.c @@ -30,6 +30,13 @@ #include "py-event.h" #include "py-stopevent.h" +extern PyTypeObject new_thread_event_object_type + CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object"); +extern PyTypeObject new_inferior_event_object_type + CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object"); +extern PyTypeObject inferior_deleted_event_object_type + CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object"); + struct threadlist_entry { thread_object *thread_obj; struct threadlist_entry *next; @@ -235,6 +242,60 @@ inferior_to_inferior_object (struct inferior *inferior) return (PyObject *) inf_obj; } +/* Called when a new inferior is created. Notifies any Python event + listeners. */ +static void +python_new_inferior (struct inferior *inf) +{ + if (!gdb_python_initialized) + return; + + gdbpy_enter enter_py (python_gdbarch, python_language); + + if (evregpy_no_listeners_p (gdb_py_events.new_inferior)) + return; + + gdbpy_ref<> inf_obj (inferior_to_inferior_object (inf)); + if (inf_obj == NULL) + { + gdbpy_print_stack (); + return; + } + + gdbpy_ref<> event (create_event_object (&new_inferior_event_object_type)); + if (event == NULL + || evpy_add_attribute (event.get (), "inferior", inf_obj.get ()) < 0 + || evpy_emit_event (event.get (), gdb_py_events.new_inferior) < 0) + gdbpy_print_stack (); +} + +/* Called when an inferior is removed. Notifies any Python event + listeners. */ +static void +python_inferior_deleted (struct inferior *inf) +{ + if (!gdb_python_initialized) + return; + + gdbpy_enter enter_py (python_gdbarch, python_language); + + if (evregpy_no_listeners_p (gdb_py_events.inferior_deleted)) + return; + + gdbpy_ref<> inf_obj (inferior_to_inferior_object (inf)); + if (inf_obj == NULL) + { + gdbpy_print_stack (); + return; + } + + gdbpy_ref<> event (create_event_object (&inferior_deleted_event_object_type)); + if (event == NULL + || evpy_add_attribute (event.get (), "inferior", inf_obj.get ()) < 0 + || evpy_emit_event (event.get (), gdb_py_events.inferior_deleted) < 0) + gdbpy_print_stack (); +} + /* Finds the Python Inferior object for the given PID. Returns a reference, or NULL if PID does not match any inferior object. */ @@ -298,6 +359,15 @@ add_thread_object (struct thread_info *tp) inf_obj->threads = entry; inf_obj->nthreads++; + + if (evregpy_no_listeners_p (gdb_py_events.new_thread)) + return; + + gdbpy_ref<> event (create_thread_event_object (&new_thread_event_object_type, + (PyObject *) thread_obj)); + if (event == NULL + || evpy_emit_event (event.get (), gdb_py_events.new_thread) < 0) + gdbpy_print_stack (); } static void @@ -823,6 +893,8 @@ gdbpy_initialize_inferior (void) observer_attach_register_changed (python_on_register_change); observer_attach_inferior_exit (python_inferior_exit); observer_attach_new_objfile (python_new_objfile); + observer_attach_inferior_added (python_new_inferior); + observer_attach_inferior_removed (python_inferior_deleted); membuf_object_type.tp_new = PyType_GenericNew; if (PyType_Ready (&membuf_object_type) < 0) @@ -970,3 +1042,19 @@ PyTypeObject membuf_object_type = { 0, /* tp_init */ 0, /* tp_alloc */ }; + +GDBPY_NEW_EVENT_TYPE (new_thread, + "gdb.NewThreadEvent", + "NewThreadEvent", + "GDB new thread event object", + thread_event_object_type); +GDBPY_NEW_EVENT_TYPE (new_inferior, + "gdb.NewInferiorEvent", + "NewInferiorEvent", + "GDB new inferior event object", + event_object_type); +GDBPY_NEW_EVENT_TYPE (inferior_deleted, + "gdb.InferiorDeletedEvent", + "InferiorDeletedEvent", + "GDB inferior deleted event object", + event_object_type); |