Whats the difference between notify() and notifyAll()?
Whats the difference between notify() and notifyAll()?
✍: Guest
notify() is used to unblock one waiting thread; notifyAll() is used to unblock all of them. Using notify() is preferable (for efficiency) when only one blocked thread can benefit from the change (for example, when freeing a buffer back into a pool). notifyAll() is necessary (for correctness) if multiple threads should resume (for example, when releasing a "writer" lock on a file might permit all "readers" to resume).
2013-02-15, 2641👍, 0💬
Related Topics:
Why do threads block on I/O?
Why do threads block on I/O? Threads block on i/o (that is enters the waiting state) so that other threads may execute while the i/o Operation is performed. 2013-02-12, 2506👍, 0💬
Is null a keyword?
Is null a keyword? The null value is not a keyword. 2013-02-14, 2381👍, 0💬