com.redhat.devtools.intellij.common.utils

Class HighSensitivityRegistrar

java.lang.Object

com.redhat.devtools.intellij.common.utils.HighSensitivityRegistrar

public class HighSensitivityRegistrar
extends java.lang.Object

A class that allows testing and grabbing SensitivityWatchEventModifier#HIGH reflectively. This allows the code to run in jdks where it does not exists (ex. IBM, etc.). SensitivityWatchEventModifier#HIGH is required for the WatchService to work ~reliably on MacOS where no native hooks but polling is used.

See Also:

"https://bugs.openjdk.java.net/browse/JDK-7133447", "https://stackoverflow.com/questions/9588737/is-java-7-watchservice-slow-for-anyone-else"

Constructor Summary

Constructors

Constructor and Description
HighSensitivityRegistrar()

Method Summary

Modifier and Type	Method and Description
boolean	exists()
java.nio.file.WatchEvent.Modifier	get() Returns the SensitivityWatchEventModifier#HIGH if it exists (on sun jvms or openjdk), null otherwise.
protected java.lang.Class<java.nio.file.WatchEvent.Modifier>	getSensitivityWatchEventModifierClass() Returns the class SensitivityWatchEventModifier if it exists.
protected boolean	isMac() Returns true if the current this is running on is MacOS.
boolean	isRequired()
void	registerService(java.nio.file.Path path, java.nio.file.WatchEvent.Kind<java.nio.file.Path>[] kinds, java.nio.file.WatchService service)

Methods inherited from class java.lang.Object

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

Constructor Detail

HighSensitivityRegistrar

public HighSensitivityRegistrar()

Method Detail

isRequired

public boolean isRequired()

isMac

protected boolean isMac()

Returns true if the current this is running on is MacOS. Returns false otherwise. Method could be private but is kept protected for testing purposes.

Returns:

true if the current system is MacOS

exists

public boolean exists()

get

public java.nio.file.WatchEvent.Modifier get()

Returns the SensitivityWatchEventModifier#HIGH if it exists (on sun jvms or openjdk), null otherwise.

Returns:

SensitivityWatchEventModifier#HIGH if it exists

registerService

public void registerService(java.nio.file.Path path,
                            java.nio.file.WatchEvent.Kind<java.nio.file.Path>[] kinds,
                            java.nio.file.WatchService service)
                     throws java.io.IOException

Throws:

java.io.IOException

getSensitivityWatchEventModifierClass

protected java.lang.Class<java.nio.file.WatchEvent.Modifier> getSensitivityWatchEventModifierClass()
                                                                                            throws java.lang.ClassNotFoundException

Returns the class SensitivityWatchEventModifier if it exists. Throws ClassNotFoundException if it was not found. Method could be private, is kept protected for testing purposes.

Returns:

SensitivityWatchEventModifier if it was found

Throws:

java.lang.ClassNotFoundException - if the modifier class could not be found