7.9.1 -XX:[+|-]HitachiJavaClassLibTrace

-XX:[+|-]HitachiJavaClassLibTrace outputs the stack trace for the class library.

Description

-XX:[+|-]HitachiJavaClassLibTrace outputs the stack trace for the API to the Java VM log file when one of the following method that affects the entire system is used:

java.lang.System.gc
java.lang.System.exit
java.lang.System.runFinalizersOnExit
java.lang.Runtime.exit
java.lang.Runtime.halt
java.lang.Runtime.runFinalizersOnExit

Format of output

[id] [Thread:thread_id]<date>
[id] [Thread:thread_id] stack_trace

Output item	Output content
`id`	`CLT` (Java VM log file identifier)
`thread_id`	Thread ID (the tid that is output to the thread dump)
`date`	Date and time the class library is used
`stack_trace`	Stack trace

Syntax

-XX:[+|-]HitachiJavaClassLibTrace

Specifiable values

Type: String

-XX:+HitachiJavaClassLibTrace: Outputs the stack trace for the class library.
-XX:-HitachiJavaClassLibTrace: Does not output the stack trace for the class library.

Default value

When the definition item is omitted:: -XX:-HitachiJavaClassLibTrace

Examples

Example of output 1

[CLT][Thread:  0x00286348]<Thu Oct 21 14:55:50 2004>
[CLT][Thread:  0x00286348] at java.lang.Shutdown.halt0(Native Method)
[CLT][Thread:  0x00286348] at java.lang.Shutdown.halt(Shutdown.java:145)
[CLT][Thread:  0x00286348] at java.lang.Shutdown.exit(Shutdown.java:222)
[CLT][Thread:  0x00286348] at java.lang.Runtime.exit(Runtime.java:90)
[CLT][Thread:  0x00286348] at java.lang.System.exit(System.java:715)
[CLT][Thread:  0x00286348] at J250048_02.main(J250048_02.java:4)

Example of output 2

[CLT][Thread:  0x009c4000]<Tue Oct 09 15:36:18 2012>
[CLT][Thread:  0x009c4000] at java.lang.Runtime.outputJavaClassLibTrace
(Native Method)
[CLT][Thread:  0x009c4000] at java.lang.Runtime.runFinalizersOnExit
(Runtime.java:378)
[CLT][Thread:  0x009c4000] at java.lang.System.runFinalizersOnExit
(System.java:978)
[CLT][Thread:  0x009c4000] at Program.main(Program.java:8)

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