剖析java.util.concurrent锁 - 编程入门网
作者 佚名技术
来源 NET编程
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发布时间 2012-06-23
| 4029000 0 0 AQS@131 17 630000 0 0 ================================================================================================= LEGEND: NAME : Name of juc lock(AQS) or ConcurrentHashMap(CHM), format: <Type>@<Idgt; CONTD-COUNT : Total count of lock contention CONTD-TIME : Total time of lock contention in nanosecond HOLD-COUNT : Total count of lock hold HOLD-TIME : Total time of lock hold in nanosecond ================================================================================================== ConcurrentHashMap [CHM@8]: ----------------------------------------------------------------------------------------------------------- Lock [AQS@135]: ----------------------------------------------------------------------------------------------------------- Lock Contention 1 CONTD-COUNT: 25 CONTD-TIME: 10827000 Call Stack: java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:758) java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:789) java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1125) java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:197) java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:273) java.util.concurrent.ConcurrentHashMap$Segment.remove(ConcurrentHashMap.java:530) java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:934) org.apache.derby.impl.services.locks.ConcurrentLockSet.unlock(ConcurrentLockSet.java:740) org.apache.derby.impl.services.locks.ConcurrentLockSet.unlockReference(ConcurrentLockSet.java:784) org.apache.derby.impl.services.locks.LockSpace.unlockReference(LockSpace.java:275) Lock [AQS@146]: ----------------------------------------------------------------------------------------------------------- Lock Contention 1 CONTD-COUNT: 22 CONTD-TIME: 2009000 Call Stack: java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:758) java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:789) java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1125) java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:197) java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:273) java.util.concurrent.ConcurrentHashMap$Segment.remove(ConcurrentHashMap.java:530) java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:934) org.apache.derby.impl.services.locks.ConcurrentLockSet.unlock(ConcurrentLockSet.java:740) org.apache.derby.impl.services.locks.ConcurrentLockSet.unlockReference(ConcurrentLockSet.java:784) org.apache.derb |
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