mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-23 07:22:25 +00:00
Signal accounting in the explicit-reply path
Properly account signal count in the explicit-reply path (when source- client gets immediately unblocked by 'signal_session_component::submit'). This patch prevents the delivery of superfluous signals with num == 0.
This commit is contained in:
parent
defd6a9b58
commit
3d5cfde313
base/src
@ -241,6 +241,9 @@ Signal Signal_receiver::wait_for_signal()
|
||||
/* invalidate current signal in context */
|
||||
context->_curr_signal = Signal(0, 0);
|
||||
|
||||
if (result.num() == 0)
|
||||
PWRN("returning signal with num == 0");
|
||||
|
||||
/* return last received signal */
|
||||
return result;
|
||||
}
|
||||
|
@ -29,6 +29,13 @@ void Signal_source_component::submit(Signal_context_component *context,
|
||||
Ipc_ostream *ostream,
|
||||
int cnt)
|
||||
{
|
||||
/*
|
||||
* If the client does not block in 'wait_for_signal', the
|
||||
* signal will be delivered as result of the next
|
||||
* 'wait_for_signal' call.
|
||||
*/
|
||||
context->increment_signal_cnt(cnt);
|
||||
|
||||
/*
|
||||
* If the client is blocking at the signal source (indicated by
|
||||
* the valid reply capability), we wake him up.
|
||||
@ -43,17 +50,13 @@ void Signal_source_component::submit(Signal_context_component *context,
|
||||
* the reply capability.
|
||||
*/
|
||||
_reply_cap = Untyped_capability();
|
||||
}
|
||||
context->reset_signal_cnt();
|
||||
|
||||
/*
|
||||
* If the client does not block in 'wait_for_signal', the
|
||||
* signal will be delivered as result of the next
|
||||
* 'wait_for_signal' call.
|
||||
*/
|
||||
context->increment_signal_cnt(cnt);
|
||||
} else {
|
||||
|
||||
if (!context->is_enqueued())
|
||||
_signal_queue.enqueue(context);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user