Devel::Events::Generator::SubTrace - generate executing_line events using the perl debugger api.
my $g = Devel::Events::Generator::SubTrace->new( handler => $h );
$g->enable();
# every subroutine will have two events fired, on entry and exit
$g->disable();
This Devel::Events generator will fire sub tracing events using DB::sub, a perl debugger hook.
Only one instance may be enabled at a given time. Use Devel::Events::Handler::Multiplex to deliver events to multiple handlers.
Subroutines inside the Devel::Events namespace or it's children will be skipped.
When the generator is enabled, this event will fire for every subroutine, just before it is executed.
Subroutines in a package starting with Devel::Events:: will not be reported.
The name of the subroutine (or it's overload::StrVal if it has none).
A code reference to the subroutine.
A copy of the arguments list. \@_ causes segfaults but [ @_ ] does not. Bummer ;-)
The current depth of the call stack.
The context of the call as given by wantarray
Exactly like enter_sub, but fired just after leaving the subroutine.
All the fields of
enter_subare passed.Additional fields:
ret
The return value of the subroutine.
Enable this generator instance, disabling any other instance of Devel::Events::Generator::SubTrace.
Stop firing events.
Called by DB::sub. Sends the enter_sub event.
Called by DB::sub. Sends the leave_sub event.
