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我有一個應用程序的threaddump顯示3個線程如下。java threadump「等待條件」的意義
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"http-443-11" daemon prio=10 tid=0x00000000473bc800 nid=0x3590 waiting on condition [0x0000000061818000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000007612a3880> (a java.util.concurrent.Semaphore$NonfairSync)
"http-443-4" daemon prio=10 tid=0x00000000451f6000 nid=0x243a waiting on condition [0x0000000055354000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000007612a3880> (a java.util.concurrent.Semaphore$NonfairSync)
"http-443-7" daemon prio=10 tid=0x000000004602e000 nid=0x2974 waiting on condition [0x000000005e6e7000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000007612a3880> (a java.util.concurrent.Semaphore$NonfairSync)
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是什麼意義「等待條件[]」? []中的數字表示什麼?
我們看到的3個線程是守護程序線程 - 由Tomcat AppServer創建。不過,這些線程並不是在「JVM」啓動時創建的。 – anjanb