7.3.5 -XX:[+|-]HitachiThreadDumpWithHashCode : Hitachi Application Server V10 Definition Reference Guide (For UNIX Systems)

Description

-XX:[+|-]HitachiThreadDumpWithHashCode specifies whether to output hash codes in the thread information of extended thread dumps.

Note that hash codes are output for the thread that is running the Java program. Hash codes are not output for the thread that is used for Java VM internal operation.

Prerequisite option

-XX:+HitachiThreadDump

Syntax

-XX:[+|-]HitachiThreadDumpWithHashCode

Specifiable values

Type: String

-XX:+HitachiThreadDumpWithHashCode: Outputs hash codes in the thread information of extended thread dumps.
-XX:-HitachiThreadDumpWithHashCode: Does not output hash codes as the thread information of extended thread dumps.

Default value

If the definition item is omitted:: -XX:+HitachiThreadDumpWithHashCode

Notes

If the output to the directory specified in the environment variable JAVACOREDIR fails, the information is output in the current directory.
If the output to the current directory fails, the information is output as a standard error. In this case, the thread dump is not output as a standard.

When [+|-] for the options below is specified as "-", some thread information is not output.

Option name	Information that is not output
`-XX:[+\|-]HitachiThreadDumpWithHashCode`	`hash_value`
`-XX:[+\|-]HitachiThreadDumpWithCpuTime`	`user_time`, `kernel_time`
`-XX:[+\|-]HitachiThreadDumpWithBlockCount`	`block_count`, `standby_count`