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PR python/15620, PR python/18620 - breakpoint events in Python

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This patch adds some breakpoint events to Python.  In particular,
there is a creation event that is emitted when a breakpoint is
created; a modification event that is emitted when a breakpoint
changes somehow; and a deletion event that is emitted when a
breakpoint is deleted.

In this patch, the event's payload is the breakpoint itself.  I
considered making a new event type to hold the breakpoint, but I
didn't see a need.  Still, I thought I would mention this as a spot
where some other choice is possible.

Built and regtested on x86-64 Fedora 23.

2016-07-13  Tom Tromey  <tom@tromey.com>

	PR python/15620, PR python/18620:
	* python/py-evts.c (gdbpy_initialize_py_events): Call
	add_new_registry for new events.
	* python/py-events.h (events_object) <breakpoint_created,
	breakpoint_deleted, breakpoint_modified>: New fields.
	* python/py-breakpoint.c (gdbpy_breakpoint_created): Emit the
	breakpoint changed event.
	(gdbpy_breakpoint_deleted): Emit the breakpoint deleted event.
	(gdbpy_breakpoint_modified): New function.
	(gdbpy_initialize_breakpoints): Attach to the breakpoint modified
	observer.

2016-07-13  Tom Tromey  <tom@tromey.com>

	PR python/15620, PR python/18620:
	* python.texi (Events In Python): Document new breakpoint events.

2016-07-13  Tom Tromey  <tom@tromey.com>

	PR python/15620, PR python/18620:
	* gdb.python/py-breakpoint.exp (connect_event, check_last_event)
	(test_bkpt_events): New procs.
This commit is contained in:
Tom Tromey
2015-05-04 21:49:11 -06:00
parent 93daf339a4
commit dac790e1b9
8 changed files with 143 additions and 0 deletions
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41
gdb/testsuite/gdb.python/py-breakpoint.exp
View File

@ -507,6 +507,46 @@ proc test_bkpt_pending {} {
"Check pending status of pending breakpoint"
}
# Helper proc to install an event listener for a given breakpoint
# event. NAME is the name of the event to listen for.
proc connect_event {name} {
set lambda "lambda x: note_event(\"$name\")"
gdb_test_no_output "python gdb.events.$name.connect($lambda)" \
"install $name event listener"
}
# Helper proc to check that the most recently emitted breakpoint event
# is EXPECTED.
proc check_last_event {expected} {
gdb_test "python print (last_bp_event)" $expected \
"check for $expected event"
}
proc test_bkpt_events {} {
global testfile
clean_restart ${testfile}
gdb_py_test_multiple "Create event handler" \
"python" "" \
"def note_event(arg):" "" \
" global last_bp_event" "" \
" last_bp_event = arg" "" \
"end" ""
gdb_test_no_output "python last_bp_event = None"
connect_event breakpoint_created
connect_event breakpoint_modified
connect_event breakpoint_deleted
gdb_breakpoint [gdb_get_line_number "Break at add."]
check_last_event breakpoint_created
gdb_test_no_output "disable 1"
check_last_event breakpoint_modified
gdb_test_no_output "delete 1"
check_last_event breakpoint_deleted
}
test_bkpt_basic
test_bkpt_deletion
test_bkpt_cond_and_cmds
@ -517,3 +557,4 @@ test_bkpt_eval_funcs
test_bkpt_temporary
test_bkpt_address
test_bkpt_pending
test_bkpt_events