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resources.report.rules.findbugs.DL_SYNCHRONIZATION_ON_BOOLEAN.html Maven / Gradle / Ivy

DL: Synchronization on Boolean (DL_SYNCHRONIZATION_ON_BOOLEAN)
 The code synchronizes on a boxed primitive constant, such as an Boolean.
private static Boolean inited = Boolean.FALSE;
...
  synchronized(inited) {
    if (!inited) {
       init();
       inited = Boolean.TRUE;
       }
     }
...

Since there normally exist only two Boolean objects, this code could be synchronizing on the same object as other, unrelated code, leading to unresponsiveness
and possible deadlock
See CERT CON08-J. Do not synchronize on objects that may be reused for more information.