void AsyncResultsMerger::signalCurrentEventIfReady_inlock() {
if (ready_inlock() && _currentEvent.isValid()) {
// To prevent ourselves from signalling the event twice, we set '_currentEvent' as
// invalid after signalling it.
_executor->signalEvent(_currentEvent);
_currentEvent = executor::TaskExecutor::EventHandle();
}
}
StatusWith<boost::optional<BSONObj>> AsyncClusterClientCursor::nextReady() {
stdx::lock_guard<stdx::mutex> lk(_mutex);
dassert(ready_inlock());
if (_lifecycleState != kAlive) {
return Status(ErrorCodes::IllegalOperation, "async cluster client cursor killed");
}
if (!_status.isOK()) {
return _status;
}
const bool hasSort = !_params.sort.isEmpty();
return hasSort ? nextReadySorted() : nextReadyUnsorted();
}
StatusWith<boost::optional<BSONObj>> AsyncResultsMerger::nextReady() {
stdx::lock_guard<stdx::mutex> lk(_mutex);
dassert(ready_inlock());
if (_lifecycleState != kAlive) {
return Status(ErrorCodes::IllegalOperation, "AsyncResultsMerger killed");
}
if (!_status.isOK()) {
return _status;
}
if (_eofNext) {
_eofNext = false;
return {boost::none};
}
const bool hasSort = !_params.sort.isEmpty();
return hasSort ? nextReadySorted() : nextReadyUnsorted();
}
bool AsyncResultsMerger::ready() {
stdx::lock_guard<stdx::mutex> lk(_mutex);
return ready_inlock();
}
bool AsyncClusterClientCursor::ready() {
stdx::lock_guard<stdx::mutex> lk(_mutex);
return ready_inlock();
}
