ch.qos.logback.core.util

Class DefaultInvocationGate

java.lang.Object

ch.qos.logback.core.util.DefaultInvocationGate

All Implemented Interfaces:

InvocationGate

public class DefaultInvocationGate
extends java.lang.Object
implements InvocationGate

This class serves as a gateway for invocations of a "costly" operation on a critical execution path.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static int	DEFAULT_MASK
private long	invocationCounter
(package private) long	lowerLimitForMaskMatch
private long	mask
(package private) static int	MASK_DECREASE_RIGHT_SHIFT_COUNT
private static long	MASK_DECREASE_THRESHOLD
private static long	MASK_INCREASE_THRESHOLD
private static int	MAX_MASK
private long	maxDelayThreshold
private long	minDelayThreshold
(package private) long	upperLimitForNoMaskMatch

Fields inherited from interface ch.qos.logback.core.util.InvocationGate

TIME_UNAVAILABLE

Constructor Summary

Constructors

Constructor and Description
DefaultInvocationGate()
DefaultInvocationGate(long minDelayThreshold, long maxDelayThreshold, long currentTime)

Method Summary

Modifier and Type	Method and Description
private void	decreaseMask()
long	getInvocationCounter()
(package private) long	getMask()
private void	increaseMask()
boolean	isTooSoon(long currentTime) The caller of this method can decide to skip further work if the returned value is true.
private void	updateLimits(long currentTime)

Methods inherited from class java.lang.Object

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

Field Detail

MASK_DECREASE_RIGHT_SHIFT_COUNT

static final int MASK_DECREASE_RIGHT_SHIFT_COUNT

See Also:

Constant Field Values

MAX_MASK

private static final int MAX_MASK

See Also:

Constant Field Values

DEFAULT_MASK

static final int DEFAULT_MASK

See Also:

Constant Field Values

mask

private volatile long mask

invocationCounter

private long invocationCounter

MASK_INCREASE_THRESHOLD

private static final long MASK_INCREASE_THRESHOLD

See Also:

Constant Field Values

MASK_DECREASE_THRESHOLD

private static final long MASK_DECREASE_THRESHOLD

See Also:

Constant Field Values

minDelayThreshold

private long minDelayThreshold

maxDelayThreshold

private long maxDelayThreshold

lowerLimitForMaskMatch

long lowerLimitForMaskMatch

upperLimitForNoMaskMatch

long upperLimitForNoMaskMatch

Constructor Detail

DefaultInvocationGate

public DefaultInvocationGate()

DefaultInvocationGate

public DefaultInvocationGate(long minDelayThreshold,
                             long maxDelayThreshold,
                             long currentTime)

Method Detail

isTooSoon

public final boolean isTooSoon(long currentTime)

Description copied from interface: InvocationGate

The caller of this method can decide to skip further work if the returned value is true. Implementations should be able to give a reasonable answer even if current time date is unavailable.

Specified by:

isTooSoon in interface InvocationGate

Returns:

if true, caller should skip further work

updateLimits

private void updateLimits(long currentTime)

getMask

long getMask()

increaseMask

private void increaseMask()

decreaseMask

private void decreaseMask()

getInvocationCounter

public long getInvocationCounter()