/**
* Adds future.
*
* @param fut Future.
* @return {@code True} if added.
*/
@SuppressWarnings({"SynchronizationOnLocalVariableOrMethodParameter"})
public boolean addFuture(final GridCacheFuture<?> fut) {
if (fut.isDone()) {
fut.markNotTrackable();
return true;
}
if (!fut.trackable()) return true;
while (true) {
Collection<GridCacheFuture<?>> old =
futs.putIfAbsent(
fut.version(),
new ConcurrentLinkedDeque8<GridCacheFuture<?>>() {
/** */
private int hash;
{
// Make sure that we add future to queue before
// adding queue to the map of futures.
add(fut);
}
@Override
public int hashCode() {
if (hash == 0) hash = System.identityHashCode(this);
return hash;
}
@Override
public boolean equals(Object obj) {
return obj == this;
}
});
if (old != null) {
boolean empty, dup = false;
synchronized (old) {
empty = old.isEmpty();
if (!empty) dup = old.contains(fut);
if (!empty && !dup) old.add(fut);
}
// Future is being removed, so we force-remove here and try again.
if (empty) {
if (futs.remove(fut.version(), old)) {
if (log.isDebugEnabled())
log.debug("Removed future list from futures map for lock version: " + fut.version());
}
continue;
}
if (dup) {
if (log.isDebugEnabled())
log.debug("Found duplicate future in futures map (will not add): " + fut);
return false;
}
}
// Handle version mappings.
if (fut instanceof GridCacheMappedVersion) {
GridCacheVersion from = ((GridCacheMappedVersion) fut).mappedVersion();
if (from != null) mapVersion(from, fut.version());
}
if (log.isDebugEnabled()) log.debug("Added future to future map: " + fut);
break;
}
// Close window in case of node is gone before the future got added to
// the map of futures.
for (ClusterNode n : fut.nodes()) {
if (cctx.discovery().node(n.id()) == null) fut.onNodeLeft(n.id());
}
// Just in case if future was completed before it was added.
if (fut.isDone()) removeFuture(fut);
else onFutureAdded(fut);
return true;
}
