Package io.quarkus.runtime.configuration

Class Substitutions.Target_SystemPropertiesSupport

java.lang.Object

io.quarkus.runtime.configuration.Substitutions.Target_SystemPropertiesSupport

Enclosing class:

Substitutions

static final class Substitutions.Target_SystemPropertiesSupport
extends Object

The GraalVM provides a lazy implementation to access system properties that are expensive to calculate. Still, it ends up calculating all the properties anyway when System.getProperties() is called, which is a common call. Used, for instance, to get the list of names in Quarkus configuration, but also in GetPropertyAction#privilegedGetProperties() is used in many JVM APIs, for instance, when determining the default timezone. Such initialization may cost a few milliseconds of the native image startup time (measured between 5-6, depending on the system).

This Substitution provides a delegate to the GraalVM lazy implementation, expanding the lazy check to each individual method of Properties.

Constructor Summary

Constructors

Constructor	Description
Target_SystemPropertiesSupport()

Method Summary

Modifier and Type	Method	Description
Properties	getProperties()

Methods inherited from class java.lang.Object

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

Constructor Details

Target_SystemPropertiesSupport

Target_SystemPropertiesSupport()

Method Details

getProperties

public Properties getProperties()