导致java.lang.IllegalMonitorStateException: object not locked by thread before wait() 异常的常见原因是: 未持有锁调用 wait():当一个线程调用某个对象的 wait() 方法时,该线程必须已经持有该对象的锁。如果线程没有持有锁,就会抛出此异常。 锁对象不一致:在调用 wait(), notify(),或 notifyAll() 方法时...
((Object)sendTag).wait(); }catch(InterruptedException e) { e.printStackTrace(); } } } } }; thread.start(); } } 这里的锁在中间会有值的变化,因此有可能在线程运行过程中就不是一个元素了,因此会报错。把锁的类型从boolean修改为Object,就ok了。
1.wait()使当前线程线程进去等待状态(注意不是阻塞状态),前提是在这个线程持有锁的情况下。否者会抛出异常java.lang.IllegalMonitorStateException: object not locked by thread before wait()。一般是和synchronized搭配使用,执行wait()后会释放当前线程的锁(并不一定是wait()方法的调用者),等待被notify()或者notif...
Wakes up a single thread that is waiting on this object’s monitor. If any threads are waiting on this object, one of them is chosen to be awakened. 译为: 唤醒此 object 控制权下的一个处于 wait 状态的线程。若有多个线程处于此 object 控制权下的 wait 状态,只有一个会被唤醒。 也就是说,...
{ setExclusiveOwnerThread(current); return true; } } else if (current == getExclusiveOwnerThread()) { int nextc = c + acquires; if (nextc < 0) throw new Error("Maximum lock count exceeded"); setState(nextc); return true; } return false; } } /** * Sync object for non-fair ...
11 * threads when it shouldn't, by returning false. 12 * 13 * 2. If a task can be successfully queued, then we still need 14 * to double-check whether we should have added a thread 15 * (because existing ones died since last checking) or that ...
OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); jt->set_suspend_equivalent(); // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() assert(_cur_index == -1, "invariant"); ...
isLocked() 方法检查是否有线程持有锁。 readObject(java.io.ObjectInputStream s) 方法重置状态,用于对象的反序列化。 abstract static class Sync extends AbstractQueuedSynchronizer { private static final long serialVersionUID = -5179523762034025860L; @ReservedStackAccess final boolean tryLock() { Thread curren...
if the thread calling this method is not the owner of this object's monitor. InterruptedException if the current thread has been interrupted. The interrupted status of the current thread will be cleared before the exception is thrown. Remarks Causes the current thread to wait until it is awake...
3. atjava.lang.Object.wait(Native Method) 4. -waiting on <0xb3885f60> (a java.util.TaskQueue) ###继续wait 5. atjava.util.TimerThread.mainLoop(Timer.java:509) 6. -locked <0xb3885f60> (a java.util.TaskQueue) ###已经locked