com.vmware.sqlfire.tools.sizer
Class SQLFireInstrumentation

java.lang.Object
  com.vmware.sqlfire.tools.sizer.SQLFireInstrumentation

All Implemented Interfaces:

com.gemstone.bp.edu.emory.mathcs.backport.java.util.concurrent.ConcurrentSkipListMap.Sizer

public class SQLFireInstrumentation
extends Object
implements com.gemstone.bp.edu.emory.mathcs.backport.java.util.concurrent.ConcurrentSkipListMap.Sizer

Class that honors "-javaagent:.../lib/sqlfiretools.jar" It gets a handle to instrumentation agent for estimating object size in memory.
If any of the classes below is altered, please test it in following way as I am yet to find java agent instrumentation before starting VM in a DUnit, a hydra test will be required.

SQLFireInstrumentation

ObjectSizer

Second mechanism of instrumenting after JVM is launched doesn't works correctly in current version 1.6

1. start locator
2. start server with -javaagent:.../lib/sqlfire.jar
3. start ij
4. execute 'select * from sys.memoryanalytics"

Since:

1.6

Method Summary

static void	agentmain(String agentArgs, Instrumentation inst)
void	attachVirtualMachineAgent()
static void	premain(String agentArgs, Instrumentation inst)
long	sizeof(Object objectToSize)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

premain

public static void premain(String agentArgs,
                           Instrumentation inst)

agentmain

public static void agentmain(String agentArgs,
                             Instrumentation inst)

sizeof

public long sizeof(Object objectToSize)

Specified by:

sizeof in interface com.gemstone.bp.edu.emory.mathcs.backport.java.util.concurrent.ConcurrentSkipListMap.Sizer

attachVirtualMachineAgent

public void attachVirtualMachineAgent()