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Optimizing AbstractPromise to avoid initial CAS

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This commit is contained in:
Viktor Klang 2012-04-26 10:55:51 +02:00
parent fbb3356fb0
commit 0a5d5f7060
1 changed files with 3 additions and 8 deletions
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11
akka-actor/src/main/java/akka/dispatch/AbstractPromise.java
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@ -7,14 +7,9 @@ package akka.dispatch;
import akka.util.Unsafe;
abstract class AbstractPromise {
private volatile Object _ref;
private volatile Object _ref = DefaultPromise.EmptyPending();
{
if (!updateState(null, DefaultPromise.EmptyPending()))
throw new ExceptionInInitializerError(new IllegalStateException("AbstractPromise initial value not null!"));
}
final static long _refOffset;
final static long _refOffset; // Memory offset to _ref field
static {
try {
@ -29,6 +24,6 @@ abstract class AbstractPromise {
}
protected final Object getState() {
return Unsafe.instance.getObjectVolatile(this, _refOffset);
return _ref;
}
}