win10 ，jkd8 查看线程状态
jvisualvm 打开JVisualVM（能够监控线程，内存情况，查看方法的CPU时间和内存中的对 象，已被GC的对象，反向查看分配的堆栈，详细信息参见JVisualVM 简介）
可以点击右上角的 线程Dump 查看线程的具体信息：
2020-08-03 16:03:52
Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.92-b14 mixed mode):
"RMI TCP Connection(2)-10.6.240.98" #24 daemon prio=5 os_prio=0 tid=0x000000001aa92000 nid=0x6a68 runnable [0x000000001afce000]
java.lang.Thread.State: RUNNABLE
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:170)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
at java.io.BufferedInputStream.read(BufferedInputStream.java:265)
- locked <0x00000000d7aa1600> (a java.io.BufferedInputStream)
at java.io.FilterInputStream.read(FilterInputStream.java:83)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:550)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$1/1978780565.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- <0x00000000d7587230> (a java.util.concurrent.ThreadPoolExecutor$Worker)
"JMX server connection timeout 23" #23 daemon prio=5 os_prio=0 tid=0x000000001a9df000 nid=0x3a84 in Object.wait() [0x000000001aecf000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at com.sun.jmx.remote.internal.ServerCommunicatorAdmin$Timeout.run(ServerCommunicatorAdmin.java:168)
- locked <0x00000000d7855800> (a [I)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"RMI Scheduler(0)" #22 daemon prio=5 os_prio=0 tid=0x000000001a9dc000 nid=0x5294 waiting on condition [0x000000001adcf000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000d7500178> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"RMI TCP Connection(idle)" #21 daemon prio=5 os_prio=0 tid=0x000000001a82f800 nid=0x587c waiting on condition [0x000000001accf000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000d74f0170> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"RMI TCP Accept-0" #20 daemon prio=5 os_prio=0 tid=0x000000001a966800 nid=0x2b30 runnable [0x000000001a3bf000]
java.lang.Thread.State: RUNNABLE
at java.net.DualStackPlainSocketImpl.accept0(Native Method)
at java.net.DualStackPlainSocketImpl.socketAccept(DualStackPlainSocketImpl.java:131)
at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:199)
- locked <0x00000000d75028f0> (a java.net.SocksSocketImpl)
at java.net.ServerSocket.implAccept(ServerSocket.java:545)
at java.net.ServerSocket.accept(ServerSocket.java:513)
at sun.management.jmxremote.LocalRMIServerSocketFactory$1.accept(LocalRMIServerSocketFactory.java:52)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:400)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:372)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"c3" #18 prio=5 os_prio=0 tid=0x0000000019045000 nid=0x6888 waiting on condition [0x000000001a2be000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000d6ab64b8> (a java.util.concurrent.locks.ReentrantLock$FairSync)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
at java.util.concurrent.locks.ReentrantLock$FairSync.lock(ReentrantLock.java:224)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
at com.smoner.lock.condition.ConditionTest1$Consumer.run(ConditionTest1.java:77)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"c2" #17 prio=5 os_prio=0 tid=0x0000000019044800 nid=0x6428 waiting on condition [0x000000001a1bf000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000d6ab64b8> (a java.util.concurrent.locks.ReentrantLock$FairSync)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
at java.util.concurrent.locks.ReentrantLock$FairSync.lock(ReentrantLock.java:224)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
at com.smoner.lock.condition.ConditionTest1$Consumer.run(ConditionTest1.java:77)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"c1" #16 prio=5 os_prio=0 tid=0x0000000019041800 nid=0x29c4 waiting on condition [0x000000001a0be000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000d6ab64b8> (a java.util.concurrent.locks.ReentrantLock$FairSync)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
at java.util.concurrent.locks.ReentrantLock$FairSync.lock(ReentrantLock.java:224)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
at com.smoner.lock.condition.ConditionTest1$Consumer.run(ConditionTest1.java:77)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"p2" #14 prio=5 os_prio=0 tid=0x0000000019040000 nid=0x5fc8 waiting on condition [0x0000000019ebf000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000d6ab65d8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
at com.smoner.lock.condition.ConditionTest1$Produce.run(ConditionTest1.java:55)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"p1" #13 prio=5 os_prio=0 tid=0x000000001903f800 nid=0x5b08 waiting on condition [0x0000000019dbf000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000d6ab65d8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
at com.smoner.lock.condition.ConditionTest1$Produce.run(ConditionTest1.java:55)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"Service Thread" #12 daemon prio=9 os_prio=0 tid=0x0000000017b4f000 nid=0x69c0 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"C1 CompilerThread2" #11 daemon prio=9 os_prio=2 tid=0x0000000017b55800 nid=0x64a8 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"C2 CompilerThread1" #10 daemon prio=9 os_prio=2 tid=0x0000000017b55000 nid=0x6af4 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"C2 CompilerThread0" #9 daemon prio=9 os_prio=2 tid=0x0000000017b51800 nid=0x5e1c waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"JDWP Command Reader" #8 daemon prio=10 os_prio=0 tid=0x0000000017b42800 nid=0x6a8 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"JDWP Event Helper Thread" #7 daemon prio=10 os_prio=0 tid=0x0000000017b3f000 nid=0x5f98 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"JDWP Transport Listener: dt_socket" #6 daemon prio=10 os_prio=0 tid=0x0000000017b31000 nid=0x6920 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Attach Listener" #5 daemon prio=5 os_prio=2 tid=0x0000000017b17000 nid=0x6088 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Signal Dispatcher" #4 daemon prio=9 os_prio=2 tid=0x0000000017b16800 nid=0x4468 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Finalizer" #3 daemon prio=8 os_prio=1 tid=0x0000000017af0000 nid=0x51e8 in Object.wait() [0x0000000018e5e000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000d6988ee0> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
- locked <0x00000000d6988ee0> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)
Locked ownable synchronizers:
- None
"Reference Handler" #2 daemon prio=10 os_prio=2 tid=0x00000000030f8000 nid=0x1698 in Object.wait() [0x0000000018d5f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000d6986b50> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:502)
at java.lang.ref.Reference.tryHandlePending(Reference.java:191)
- locked <0x00000000d6986b50> (a java.lang.ref.Reference$Lock)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)
Locked ownable synchronizers:
- None
"main" #1 prio=5 os_prio=0 tid=0x0000000003008800 nid=0x68c8 in Object.wait() [0x0000000002fff000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000d6ab67d8> (a java.lang.Thread)
at java.lang.Thread.join(Thread.java:1245)
- locked <0x00000000d6ab67d8> (a java.lang.Thread)
at java.lang.Thread.join(Thread.java:1319)
at com.smoner.lock.condition.ConditionTest1.main(ConditionTest1.java:28)
Locked ownable synchronizers:
- None
"VM Thread" os_prio=2 tid=0x0000000017ac9000 nid=0x69f4 runnable
"GC task thread#0 (ParallelGC)" os_prio=0 tid=0x000000000301e000 nid=0x6318 runnable
"GC task thread#1 (ParallelGC)" os_prio=0 tid=0x000000000301f800 nid=0x6904 runnable
"GC task thread#2 (ParallelGC)" os_prio=0 tid=0x0000000003021000 nid=0x671c runnable
"GC task thread#3 (ParallelGC)" os_prio=0 tid=0x0000000003023800 nid=0x5704 runnable
"VM Periodic Task Thread" os_prio=2 tid=0x0000000018ff7800 nid=0x11fc waiting on condition
JNI global references: 5183
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