Major problem with record locking

[Douglas Kent]

Submitted and got feedback that my record locking was poor. Here's what I wrote, basically a two-step process that involves sleeping and polling, which I gather is the problem:
LockStruct Lstr = (LockStruct)LockArray.get(record);
synchronized (Lstr.Lock) {
while ( Lstr.Locked ) {
try {
Thread.sleep( sleepTime );
}
catch (InterruptedException ex) {}
}
Lstr.ThreadThatHasLock = Thread.currentThread();
Lstr.Locked = true;
Any suggestions?

[Sam Wong]

Off the top of my head, maybe you can try an event notification model to notify interested listeners that the record is freed. The listener may be a record locking manager that handles record locking requests. Just an idea. Hope it will spark your own ideas about this.