Package org.openjdk.jmc.flightrecorder.rules.jdk.latency

Class ContextSwitchRule

java.lang.Object

org.openjdk.jmc.flightrecorder.rules.jdk.latency.ContextSwitchRule

All Implemented Interfaces:

IRule

public class ContextSwitchRule
extends java.lang.Object
implements IRule

Field Summary

Fields

Modifier and Type	Field	Description
private static java.util.List<TypedPreference<?>>	CONFIG_ATTRIBUTES
static TypedPreference<IQuantity>	CONTEXT_SWITCH_WARNING_LIMIT
private static IAggregator<IQuantity,?>	MAX_BLOCKS
private static java.lang.String	RESULT_ID

Constructor Summary

Constructors

Constructor	Description
ContextSwitchRule()

Method Summary

Modifier and Type	Method	Description
private static long	calculateSwitchRate(IItemCollection switchItems)
private Result	evaluate(IItemCollection items, long switchRateLimit)
java.util.concurrent.RunnableFuture<Result>	evaluate(IItemCollection items, IPreferenceValueProvider vp)	Gets a future representing the result of the evaluation of this rule.
java.util.Collection<TypedPreference<?>>	getConfigurationAttributes()	Gets information about which attributes may be configured during rule evaluation.
java.lang.String	getId()
private static long	getMostBlocks(IItemCollection items)
java.lang.String	getName()
java.lang.String	getTopic()

Methods inherited from class java.lang.Object

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

Field Detail

CONTEXT_SWITCH_WARNING_LIMIT

public static final TypedPreference<IQuantity> CONTEXT_SWITCH_WARNING_LIMIT

CONFIG_ATTRIBUTES

private static final java.util.List<TypedPreference<?>> CONFIG_ATTRIBUTES

RESULT_ID

private static final java.lang.String RESULT_ID

See Also:

Constant Field Values

MAX_BLOCKS

private static final IAggregator<IQuantity,?> MAX_BLOCKS

Constructor Detail

ContextSwitchRule

public ContextSwitchRule()

Method Detail

evaluate

public java.util.concurrent.RunnableFuture<Result> evaluate(IItemCollection items,
                                                            IPreferenceValueProvider vp)

Description copied from interface: IRule

Gets a future representing the result of the evaluation of this rule. Running the RunnableFuture is the responsibility of the caller of this method, not the implementation.

Specified by:

evaluate in interface IRule

Parameters:

items - items to evaluate

vp - Provider of configuration values used for evaluation. The attributes that will be asked for from the provider should be provided by IRule.getConfigurationAttributes().

Returns:

a RunnableFuture that when run will return the evaluation result

evaluate

private Result evaluate(IItemCollection items,
                        long switchRateLimit)

calculateSwitchRate

private static long calculateSwitchRate(IItemCollection switchItems)

getMostBlocks

private static long getMostBlocks(IItemCollection items)

getConfigurationAttributes

public java.util.Collection<TypedPreference<?>> getConfigurationAttributes()

Description copied from interface: IRule

Gets information about which attributes may be configured during rule evaluation.

Specified by:

getConfigurationAttributes in interface IRule

Returns:

a list of configuration attributes

getId

public java.lang.String getId()

Specified by:

getId in interface IRule

Returns:

a unique id for this rule implementation

getName

public java.lang.String getName()

Specified by:

getName in interface IRule

Returns:

a human readable name for this rule

getTopic

public java.lang.String getTopic()

Specified by:

getTopic in interface IRule

Returns:

the topic for this rule, may be null