7.3.5 -XX:[+|-]HitachiThreadDumpWithHashCode
-XX:[+|-]HitachiThreadDumpWithHashCode outputs hash codes in the thread information of extended thread dumps.
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
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-XX:+HitachiThreadDump
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Syntax
-XX:[+|-]HitachiThreadDumpWithHashCode
Specifiable values
Type: String
- -XX:+HitachiThreadDumpWithHashCode
-
Outputs hash codes in the thread information of extended thread dumps.
- -XX:-HitachiThreadDumpWithHashCode
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Does not output hash codes as the thread information of extended thread dumps.
Notes
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If the output to the directory specified in the environment variable JAVACOREDIR fails, the information is output in the current directory.
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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.
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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