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package org.jruby.runtime.opto;
import java.lang.invoke.SwitchPoint;
import java.util.List;
public class SwitchPointInvalidator implements Invalidator {
// a dummy switchpoint to use until we actually need a real one
private static final SwitchPoint DUMMY = new SwitchPoint();
static {SwitchPoint.invalidateAll(new SwitchPoint[]{DUMMY});}
private volatile SwitchPoint switchPoint = DUMMY;
public synchronized void invalidate() {
if (switchPoint == DUMMY) return;
SwitchPoint.invalidateAll(new SwitchPoint[]{switchPoint});
switchPoint = new SwitchPoint();
}
public void invalidateAll(List<Invalidator> invalidators) {
SwitchPoint[] switchPoints = new SwitchPoint[invalidators.size()];
for (int i = 0; i < invalidators.size(); i++) {
Invalidator invalidator = invalidators.get(i);
assert invalidator instanceof SwitchPointInvalidator;
switchPoints[i] = ((SwitchPointInvalidator)invalidator).replaceSwitchPoint();
}
SwitchPoint.invalidateAll(switchPoints);
}
public synchronized Object getData() {
return switchPoint == DUMMY ? switchPoint = new SwitchPoint() : switchPoint;
}
public synchronized SwitchPoint replaceSwitchPoint() {
if (switchPoint == DUMMY) return switchPoint;
SwitchPoint oldSwitchPoint = switchPoint;
switchPoint = new SwitchPoint();
return oldSwitchPoint;
}
}