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externalized JNI bindings

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This commit is contained in:
Sebastian Stenzel
2016-08-30 17:19:45 +02:00
parent dc58ba434a
commit e0ae50378f
9 changed files with 37 additions and 114 deletions
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main/commons/src/main/java/org/cryptomator/common/LazyInitializer.java
+10 -9
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@@ -17,16 +17,17 @@ public final class LazyInitializer {
* @return The initialized value
*/
public static <T> T initializeLazily(AtomicReference<T> reference, Supplier<T> factory) {
final T existingInstance = reference.get();
if (existingInstance != null) {
return existingInstance;
final T existing = reference.get();
if (existing != null) {
return existing;
} else {
final T newInstance = factory.get();
if (reference.compareAndSet(null, newInstance)) {
return newInstance;
} else {
return reference.get();
}
return reference.updateAndGet(currentValue -> {
if (currentValue == null) {
return factory.get();
} else {
return currentValue;
}
});
}
}