void QueryOptimizerCursorImpl::recoverFromTouchingEarlierIterate() {
if ( _takeover ) {
_takeover->recoverFromTouchingEarlierIterate();
}
else if ( _currRunner ) {
if ( _mps->currentNPlans() == 1 ) {
_currRunner->recoverFromTouchingEarlierIterate();
}
else {
recoverFromYield();
}
}
}
void QueryPlanSet::Runner::mayYield() {
if ( _plans._mayYield ) {
if ( _plans._yieldSometimesTracker.ping() ) {
int micros = ClientCursor::yieldSuggest();
if ( micros > 0 ) {
if ( !prepareToYield() ) {
return;
}
ClientCursor::staticYield( micros , _plans._ns );
recoverFromYield();
}
}
}
}
void QueryPlanSet::Runner::mayYield( const vector< shared_ptr< QueryOp > > &ops ) {
if ( _plans._mayYield ) {
if ( _plans._yieldSometimesTracker.ping() ) {
int micros = ClientCursor::yieldSuggest();
if ( micros > 0 ) {
for( vector<shared_ptr<QueryOp> >::const_iterator i = ops.begin(); i != ops.end(); ++i ) {
if ( !prepareToYield( **i ) ) {
return;
}
}
ClientCursor::staticYield( micros , _plans._ns );
for( vector<shared_ptr<QueryOp> >::const_iterator i = ops.begin(); i != ops.end(); ++i ) {
recoverFromYield( **i );
}
}
}
}
}
