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GP-1861 - Changed locking to prevent potential out-of-order events

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dragonmacher 2022-03-29 15:30:47 -04:00
parent 2d526352ee
commit 1ef3f71dd1
16 changed files with 192 additions and 197 deletions
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14
Ghidra/Framework/Generic/src/main/java/ghidra/util/datastruct/CopyOnWriteWeakSet.java
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@ -20,24 +20,24 @@ import java.util.*;
import org.apache.commons.collections4.IteratorUtils;
/**
* A set that avoids {@link ConcurrentModificationException}s by copying the internal storage
* <b>for every mutation operation</b>. Thus, this data structure is only efficient when the
* A set that avoids {@link ConcurrentModificationException}s by copying the internal storage
* <b>for every mutation operation</b>. Thus, this data structure is only efficient when the
* number of event notification operations significantly out numbers mutations to this structure
* (e.g., adding and removing items.
* <p>
* An example use cases where using this class is a good fit would be a listener list where
* listeners are added during initialization, but not after that. Further, this hypothetical
* An example use cases where using this class is a good fit would be a listener list where
* listeners are added during initialization, but not after that. Further, this hypothetical
* list fires a large number of events.
* <p>
* A bad use of this class would be as a container to store widgets where the container the
* A bad use of this class would be as a container to store widgets where the container the
* contents are changed often, but iterated over very little.
* <p>
* Finally, if this structure is only ever used from a single thread, like the Swing thread, then
* you do not need the overhead of this class, as the Swing thread synchronous access guarantees
* that the structure cannot be mutated while it is being iterated. See
* that the structure cannot be mutated while it is being iterated. See
* {@link WeakDataStructureFactory#createSingleThreadAccessWeakSet()}.
*
* @param <T>
* @param <T> the type
* @see WeakSet
*/
class CopyOnWriteWeakSet<T> extends WeakSet<T> {