org.jikesrvm.adaptive.recompilation
Class InvocationCounts

java.lang.Object
  org.jikesrvm.adaptive.recompilation.InvocationCounts

public final class InvocationCounts
extends Object

Runtime system support for using invocation counters in baseline compiled code to select methods for optimizing recompilation by the adaptive system. Bypasses the normal controller logic: If an invocation counter trips, then the method is enqueued for recompilation at a default optimization level.

counts

private static int[] counts

processed

private static boolean[] processed

_optPlan

private static OptimizationPlanElement[] _optPlan

_options

private static OptOptions _options

InvocationCounts

public InvocationCounts()

allocateCounter

public static void allocateCounter(int id)

counterTripped

static void counterTripped(int id)

Called from baseline compiled code when a method's invocation counter becomes negative and thus must be handled

createCompilationPlan

public static CompilationPlan createCompilationPlan(NormalMethod method)

Create the compilation plan according to the default set of <optimization plan, options> pairs

createCompilationPlan

public static CompilationPlan createCompilationPlan(NormalMethod method,
                                                    AOSInstrumentationPlan instPlan)

init

public static void init()

Initialize the recompilation strategy.

Note: This uses the command line options to set up the optimization plans, so this must be run after the command line options are available.

createOptimizationPlan

static void createOptimizationPlan()

Create the default set of pairs Process optimizing compiler command line options.