IBM User Guide for Java V7 on Windows > Troubleshooting and support > Using diagnostic tools > Using the Reliability, Availability, and Serviceability Interface

Formatting

You can use J9TraceFormat.dat to format JVM-generated tracepoints that are captured by the agent. J9TraceFormat.dat is shipped with the SDK.

J9TraceFormat.dat consists of a flat ASCII or EBCDIC file of the following format:

5.0
j9vm 0 1 1 N Trc_VM_VMInitStages_Event1 " Trace engine initialized for module j9vm"
j9vm 2 1 1 N Trc_VM_CreateRAMClassFromROMClass_Entry " >Create RAM class from ROM class %p in class loader %p"
j9vm 4 1 1 N Trc_VM_CreateRAMClassFromROMClass_Exit " j9vm 4 1 1 N Trc_VM_CreateRAMClassFromROMClass_Exit " 

The first line contains the version number of the format file. A new version number reflects changes to the layout of this file.

The format of each tracepoint entry is as follows:

 <component> <t> <o> <l> <e> <symbol> <template>

where:

• <component> is the internal JVM component name.
• <t> is the tracepoint type (0 through 11).
• <o> is the overhead (0 through 10).
• <l> is the level of the tracepoint (0 through 9, or - if the tracepoint is obsolete).
• <e> is the explicit setting flag (Y/N).
• <symbol> is the name of the tracepoint.
• <template> is a template that is used to format the entry. The template consists of the text that appears in double quotation marks (").

Tracepoint types are as follows:

Type 0

Event

Type 1

Exception

Type 2

Entry

Type 4

Exit

Type 5

Exit-with-Exception

Type 6

Mem

Any other type is reserved for development use; you should not find any other type on a release version of IBM Java™.

Note: This condition is subject to change without notice.

The version number is different for each version.

Parent: Using the Reliability, Availability, and Serviceability Interface

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