StampedLock supports three modes: write locks, read pessimistic, optimistic reading
StampedLock ReadWriteLock performance than good reason to support the optimistic reading.
readwritelock support multi-threaded read, but when to write, read all are blocked. The stampedlock supports write, they also read, because reading is not optimistic lock.
When a thread is blocked in stampedlock readlock or writelock, this time calling thread interrupt can cause obstruction cup soar. At this point, you should call readlockInterrupt or writelockinterrupt
Common wording
final StampedLock sl =
new StampedLock();
// optimistic read
Long stamp =
sl.tryOptimisticRead ();
// read method of local variables
......
// check stamp
(! Sl.validate (stamp)) IF {
// update pessimistic read locks
stamp sl.readLock = ();
the try {
// read method of local variables
.....
} the finally {
// release pessimistic read locks
sl.unlockRead (Stamp);
}
}
// use local variables performs traffic operations
.. ....
