/** Acquires write lock on the given key. */
protected final void lockForWriting(L key) {
locks.acquireLock(key, true);
}
/** Acquires read lock on the given key. */
protected final void lockForReading(L key) {
locks.acquireLock(key, false);
}
/** Same as {@link #lockForWriting(Object)}, but with 0 timeout. */
protected final boolean immediateLockForWriting(L key) {
return locks.acquireLock(key, true, 0);
}
