/** @return {@code True} if locks have been acquired. */
private boolean checkLocks() {
if (!isDone() && initialized() && !hasPending()) {
for (int i = 0; i < entries.size(); i++) {
while (true) {
GridCacheEntryEx<K, V> cached = entries.get(i);
try {
if (!locked(cached)) {
if (log.isDebugEnabled())
log.debug(
"Lock is still not acquired for entry (will keep waiting) [entry="
+ cached
+ ", fut="
+ this
+ ']');
return false;
}
break;
}
// Possible in concurrent cases, when owner is changed after locks
// have been released or cancelled.
catch (GridCacheEntryRemovedException ignore) {
if (log.isDebugEnabled())
log.debug("Got removed entry in onOwnerChanged method (will retry): " + cached);
// Replace old entry with new one.
entries.set(i, (GridDistributedCacheEntry<K, V>) cctx.cache().entryEx(cached.key()));
}
}
}
if (log.isDebugEnabled())
log.debug("Local lock acquired for entries [fut=" + this + ", entries=" + entries + "]");
onComplete(true, true);
return true;
}
return false;
}
/**
* Undoes all locks.
*
* @param dist If {@code true}, then remove locks from remote nodes as well.
*/
private void undoLocks(boolean dist) {
// Transactions will undo during rollback.
if (dist && tx == null) cctx.nearTx().removeLocks(lockVer, keys);
else {
if (tx != null) {
if (tx.setRollbackOnly()) {
if (log.isDebugEnabled())
log.debug(
"Marked transaction as rollback only because locks could not be acquired: " + tx);
} else if (log.isDebugEnabled())
log.debug(
"Transaction was not marked rollback-only while locks were not acquired: " + tx);
}
for (GridCacheEntryEx<K, V> e : entriesCopy()) {
try {
e.removeLock(lockVer);
} catch (GridCacheEntryRemovedException ignored) {
while (true) {
try {
e = cctx.cache().peekEx(e.key());
if (e != null) e.removeLock(lockVer);
break;
} catch (GridCacheEntryRemovedException ignore) {
if (log.isDebugEnabled())
log.debug(
"Attempted to remove lock on removed entry (will retry) [ver="
+ lockVer
+ ", entry="
+ e
+ ']');
}
}
}
}
}
cctx.mvcc().recheckPendingLocks();
}
/**
* @param cached Entry.
* @return {@code True} if locked.
* @throws GridCacheEntryRemovedException If removed.
*/
private boolean locked(GridCacheEntryEx<K, V> cached) throws GridCacheEntryRemovedException {
// Reentry-aware check (If filter failed, lock is failed).
return cached.lockedLocallyByIdOrThread(lockVer, threadId) && filter(cached);
}
