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  1. [sajia@211 test_native_monitorenter]$ java -version
  2. java version "1.6.0_30"
  3. Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
  4. OpenJDK 64-Bit Server VM (build 20.0-b12-internal-fastdebug, mixed mode)
  5. [sajia@211 test_native_monitorenter]$ jps
  6. 12676 Jps
  7. 12651 Main
  8. [sajia@211 test_native_monitorenter]$ jstack -l 12651
  9. 2012-03-26 16:51:08
  10. Full thread dump OpenJDK 64-Bit Server VM (20.0-b12-internal-fastdebug mixed mode):
  11.  
  12. "Attach Listener" daemon prio=10 tid=0x00002aaaafcbd800 nid=0x31b2 runnable [0x0000000000000000]
  13. java.lang.Thread.State: RUNNABLE
  14. JavaThread state: _thread_blocked
  15. Thread: 0x00002aaaafcbd800 [0x31b2] State: _call_back _has_called_back 1 _at_poll_safepoint 0
  16. JavaThread state: _thread_blocked
  17.  
  18. Locked ownable synchronizers:
  19. - None
  20.  
  21. "Low Memory Detector" daemon prio=10 tid=0x00002aaab8007800 nid=0x3180 runnable [0x0000000000000000]
  22. java.lang.Thread.State: RUNNABLE
  23. JavaThread state: _thread_blocked
  24. Thread: 0x00002aaab8007800 [0x3180] State: _at_safepoint _has_called_back 0 _at_poll_safepoint 0
  25. JavaThread state: _thread_blocked
  26.  
  27. Locked ownable synchronizers:
  28. - None
  29.  
  30. "C2 CompilerThread1" daemon prio=10 tid=0x00002aaab8004800 nid=0x317f waiting on condition [0x0000000000000000]
  31. java.lang.Thread.State: RUNNABLE
  32. JavaThread state: _thread_blocked
  33. Thread: 0x00002aaab8004800 [0x317f] State: _at_safepoint _has_called_back 0 _at_poll_safepoint 0
  34. JavaThread state: _thread_blocked
  35.  
  36. Locked ownable synchronizers:
  37. - None
  38.  
  39. "C2 CompilerThread0" daemon prio=10 tid=0x00002aaab8001000 nid=0x317e waiting on condition [0x0000000000000000]
  40. java.lang.Thread.State: RUNNABLE
  41. JavaThread state: _thread_blocked
  42. Thread: 0x00002aaab8001000 [0x317e] State: _at_safepoint _has_called_back 0 _at_poll_safepoint 0
  43. JavaThread state: _thread_blocked
  44.  
  45. Locked ownable synchronizers:
  46. - None
  47.  
  48. "Signal Dispatcher" daemon prio=10 tid=0x00002aaaafc83000 nid=0x317d runnable [0x0000000000000000]
  49. java.lang.Thread.State: RUNNABLE
  50. JavaThread state: _thread_blocked
  51. Thread: 0x00002aaaafc83000 [0x317d] State: _at_safepoint _has_called_back 0 _at_poll_safepoint 0
  52. JavaThread state: _thread_blocked
  53.  
  54. Locked ownable synchronizers:
  55. - None
  56.  
  57. "Finalizer" daemon prio=10 tid=0x00002aaaafc53800 nid=0x317c in Object.wait() [0x000000004199a000]
  58. java.lang.Thread.State: WAITING (on object monitor)
  59. JavaThread state: _thread_blocked
  60. Thread: 0x00002aaaafc53800 [0x317c] State: _at_safepoint _has_called_back 0 _at_poll_safepoint 0
  61. JavaThread state: _thread_blocked
  62. at java.lang.Object.wait(Native Method)
  63. - waiting on <0x0000000758601300> (a java.lang.ref.ReferenceQueue$Lock)
  64. at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
  65. - locked <0x0000000758601300> (a java.lang.ref.ReferenceQueue$Lock)
  66. at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)
  67. at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
  68.  
  69. Locked ownable synchronizers:
  70. - None
  71.  
  72. "Reference Handler" daemon prio=10 tid=0x00002aaaafc51800 nid=0x317b in Object.wait() [0x0000000041899000]
  73. java.lang.Thread.State: WAITING (on object monitor)
  74. JavaThread state: _thread_blocked
  75. Thread: 0x00002aaaafc51800 [0x317b] State: _at_safepoint _has_called_back 0 _at_poll_safepoint 0
  76. JavaThread state: _thread_blocked
  77. at java.lang.Object.wait(Native Method)
  78. - waiting on <0x00000007586011d8> (a java.lang.ref.Reference$Lock)
  79. at java.lang.Object.wait(Object.java:485)
  80. at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
  81. - locked <0x00000007586011d8> (a java.lang.ref.Reference$Lock)
  82.  
  83. Locked ownable synchronizers:
  84. - None
  85.  
  86. "main" prio=10 tid=0x00000000420a5000 nid=0x316c runnable [0x0000000040871000]
  87. java.lang.Thread.State: RUNNABLE
  88. JavaThread state: _thread_blocked
  89. Thread: 0x00000000420a5000 [0x316c] State: _call_back _has_called_back 1 _at_poll_safepoint 0
  90. JavaThread state: _thread_blocked
  91. at Foo.spinWait(Foo.java:13)
  92. at Foo.lockMe(Native Method)
  93. at Foo.bar(Foo.java:7)
  94. at Main.main(Main.java:3)
  95.  
  96. Locked ownable synchronizers:
  97. - None
  98.  
  99. "VM Thread" prio=10 tid=0x00002aaaafc49000 nid=0x317a runnable
  100.  
  101. "GC task thread#0 (ParallelGC)" prio=10 tid=0x00000000420bd000 nid=0x316d runnable
  102.  
  103. "GC task thread#1 (ParallelGC)" prio=10 tid=0x00000000420bf000 nid=0x316e runnable
  104.  
  105. "GC task thread#2 (ParallelGC)" prio=10 tid=0x00000000420c1800 nid=0x316f runnable
  106.  
  107. "GC task thread#3 (ParallelGC)" prio=10 tid=0x00000000420c3800 nid=0x3170 runnable
  108.  
  109. "GC task thread#4 (ParallelGC)" prio=10 tid=0x00000000420c5800 nid=0x3171 runnable
  110.  
  111. "GC task thread#5 (ParallelGC)" prio=10 tid=0x00000000420c7800 nid=0x3172 runnable
  112.  
  113. "GC task thread#6 (ParallelGC)" prio=10 tid=0x00000000420c9800 nid=0x3173 runnable
  114.  
  115. "GC task thread#7 (ParallelGC)" prio=10 tid=0x00000000420cb800 nid=0x3174 runnable
  116.  
  117. "GC task thread#8 (ParallelGC)" prio=10 tid=0x00000000420cd800 nid=0x3175 runnable
  118.  
  119. "GC task thread#9 (ParallelGC)" prio=10 tid=0x00000000420cf800 nid=0x3176 runnable
  120.  
  121. "GC task thread#10 (ParallelGC)" prio=10 tid=0x00000000420d1800 nid=0x3177 runnable
  122.  
  123. "GC task thread#11 (ParallelGC)" prio=10 tid=0x00000000420d3800 nid=0x3178 runnable
  124.  
  125. "GC task thread#12 (ParallelGC)" prio=10 tid=0x00000000420d5800 nid=0x3179 runnable
  126.  
  127. "VM Periodic Task Thread" prio=10 tid=0x00002aaab8013800 nid=0x3181 waiting on condition
  128.  
  129. Compiler thread printing unimplemented.
  130.  
  131. JNI global references: 873
  132.  
  133. [sajia@211 test_native_monitorenter]$
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