org.jikesrvm.adaptive.recompilation.instrumentation

Class CounterBasedSampling

java.lang.Object

org.jikesrvm.adaptive.recompilation.instrumentation.CounterBasedSampling

public final class CounterBasedSampling
extends Object

Contains necessary infrastructure to perform counter-based sampling used with the instrumentation sampling code (PLDI'01) (see InstrumentationSamplingFramework)

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static boolean	DEBUG
(package private) static int	globalCounter The global counter.
(package private) static int	resetValue Holds the value that is used to reset the global counter after a sample is taken.

Constructor Summary

Constructors

Constructor and Description
CounterBasedSampling()

Method Summary

Modifier and Type	Method and Description
static void	boot(AOSOptions options) Initializes counter based sampling.

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

static final boolean DEBUG

See Also:

Constant Field Values

resetValue

static int resetValue

Holds the value that is used to reset the global counter after a sample is taken.

globalCounter

static int globalCounter

The global counter.

Constructor Detail

CounterBasedSampling

public CounterBasedSampling()

Method Detail

boot

public static void boot(AOSOptions options)

Initializes counter based sampling. Called when the VM boots.

Parameters:

options - the options for the AOS (and therefore also counter-based sampling)