JD.LOCK.SLEEP
JD.LOCK.SLEEP occurs when a method calls Thread.sleep() while a lock is held.
Vulnerability and risk
This may result in very poor performance and scalability, or in a deadlock, since other threads may be waiting to acquire the lock. It is a much better idea to call wait() on the lock, which releases the lock and allows other threads to run.
Mitigation and prevention
Call a sleep() method without holding locks.
Example 1
13 String name;
14 synchronized void finish(Object o) throws InterruptedException {
15 while (!name.equals("root")) {
16 Thread.sleep(1000);
17 }
18 }
JD.LOCK.SLEEP is reported for line 16: Calling 'java.lang.Thread.sleep(long)' with locks '[this]' held could cause a deadlock.
