thread dump 代码

thread dump 代码
Thread-8" id=475 idx=0x2dc tid=1220 prio=5 alive, waiting, native_blocked, daemon
    -- Waiting for notification on: com/hth/base/util/pool/ThreadPool@0x1071f1590[fat lock]
    at jrockit/vm/Threads.waitForNotifySignal(JLjava/lang/Object;)Z(Native Method)
    at java/lang/Object.wait(J)V(Native Method)
    at com/hth/base/util/pool/ThreadPool.run(ThreadPool.java:146)
    ^-- Lock released while waiting: com/hth/base/util/pool/ThreadPool@0x1071f1590[fat lock]
    at java/lang/Thread.run(Thread.java:619)
    at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
    -- end of trace
这段代码是有问题的，还是正常的？Waiting for notification on:，^-- Lock released whilewaiting:是什么意思 ？他们都指向com/hth/base/util/pool/ThreadPool@0x1071f1590[fat lock]。
请指点