public void lock(final long recid) {
if (CC.LOG_LOCKS)
Utils.LOG.finest("TRYLOCK R:" + recid + " T:" + Thread.currentThread().getId());
// feel free to rewrite, if you know better (more efficient) way
if (CC.ASSERT && locks.get(recid) == Thread.currentThread()) {
// check node is not already locked by this thread
throw new InternalError("node already locked by current thread: " + recid);
}
while (locks.putIfAbsent(recid, Thread.currentThread()) != null) {
Thread.yield();
}
if (CC.LOG_LOCKS)
Utils.LOG.finest("LOCK R:" + recid + " T:" + Thread.currentThread().getId());
}
public void unlock(final long recid) {
if (CC.LOG_LOCKS)
Utils.LOG.finest("UNLOCK R:" + recid + " T:" + Thread.currentThread().getId());
final Thread t = locks.remove(recid);
if (t != Thread.currentThread()) throw new InternalError("unlocked wrong thread");
}
