Module openj9.traceformat

Package com.ibm.jvm.trace

Interface TraceFileHeader

All Known Implementing Classes:

TraceFileHeader

public interface TraceFileHeader

A class to format and report a binary TraceFileHeader produced by the IBM JVM's trace engine.

Method Summary

Modifier and Type	Method	Description
long	getFirstTracePointMillis()
long	getJVMStartedMillis()
long	getLastBufferWriteMillis()
long	getLastTracePointMillis()
String[]	getSysProcessorInfo()
String[]	getTraceParameters()
String[]	getVMStartUpParameters()
String	getVMVersion()

Method Details

getVMVersion

String getVMVersion()

Returns:

a String representation of the JVM that produced the current TraceFile, null if no valid data.

getVMStartUpParameters

String[] getVMStartUpParameters()

Returns:

a String array representation of the startup parameters that were used to start the JVM that produced the current TraceFile, null if no valid data.

getTraceParameters

String[] getTraceParameters()

Returns:

a String array representation of the Trace startup parameters that were used to start the JVM that produced the current TraceFile, null if no valid data.

getSysProcessorInfo

String[] getSysProcessorInfo()

Returns:

a String array representation of the system on which the JVM that produced the current TraceFile was run, null if no valid data.

getJVMStartedMillis

long getJVMStartedMillis()

Returns:

the millisecond time at which the JVM that produced the current TraceFile was started. Returns -1 if no valid data.

getLastBufferWriteMillis

long getLastBufferWriteMillis()

Returns:

the millisecond time at which the JVM that produced the current TraceFile wrote its most recent TracePoint before the production of the current TraceFile. Returns -1 if no valid data.

getFirstTracePointMillis

long getFirstTracePointMillis()

Returns:

the millisecond time of the first TracePoint in the current TraceFile. This may not be the first TracePoint that the JVM produced. Returns -1 if no valid data.

getLastTracePointMillis

long getLastTracePointMillis()

Returns:

the millisecond time of the last TracePoint in the current TraceFile. This may not be the last TracePoint that the JVM produced. Returns -1 if no valid data.