IBM Support

IV43746: CONFUSING ENTRY/EXIT TRACEPOINT ORDER FOR GETOBJECTMONITOROWNER

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: N/A
    .
    The tracepoint for getObjectMonitorOwner() often resembles:
    06:03:13.840536835  0x24134100   j9vmutil(j9jvmti).4    Entry
      >getObjectMonitorOwner (jvm=0x53cca8, object=0x303db88,
    pcount=0x0)
    06:03:13.840536835  0x24134100   j9vmutil(j9jvmti).5    Exit
      <getObjectMonitorOwner (owner=0x0, count=0)
    06:03:13.840537137  0x24134100   j9vmutil(j9jvmti).5    Exit
      <getObjectMonitorOwner (owner=0x0, count=0)
    06:03:13.840537137  0x24134100   j9vmutil(j9jvmti).4    Entry
      >getObjectMonitorOwner (jvm=0x53cca8, object=0x2fa8e18,
    pcount=0x0)
    06:03:13.840537137  0x24134100   j9vmutil(j9jvmti).5    Exit
      <getObjectMonitorOwner (owner=0x0, count=0)
    06:03:13.840537439  0x24134100   j9vmutil(j9jvmti).5    Exit
      <getObjectMonitorOwner (owner=0xabae600, count=0)
    06:03:13.840537439  0x24134100   j9vmutil(j9jvmti).4    Entry
      >getObjectMonitorOwner (jvm=0x53cca8, object=0x226d54c0,
    pcount=0x0)
    06:03:13.840537741  0x24134100   j9vmutil(j9jvmti).4    Entry
      >getObjectMonitorOwner (jvm=0x53cca8, object=0x303db38,
    pcount=0x0)
    06:03:13.840537741  0x24134100   j9vmutil(j9jvmti).5    Exit
      <getObjectMonitorOwner (owner=0x0, count=0)
    Since the function is called asynchronously, lacking 'object'
    information in the Exit tracepoint makes debugging painful
    

Local fix

  • N/A
    

Problem summary

  • The Exit tracepoint for getObjectMonitorOwner() did not contain
    sufficient information to identify the object being queried
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR5
    6.0.1 SR6
    6.0.0 SR14
    .
    'object' information is now included in Exit tracepoint for
    getObjectMonitorOwner
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV43746

  • Reported component name

    J9 COMMON CODE

  • Reported component ID

    620700127

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-06-03

  • Closed date

    2013-06-03

  • Last modified date

    2013-06-03

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    J9 COMMON CODE

  • Fixed component ID

    620700127

Applicable component levels

  • R260 PSY

       UP

  • R600 PSY

       UP



Document information

More support for: Runtimes for Java Technology
Virtual Machine

Software version: 260

Reference #: IV43746

Modified date: 03 June 2013