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8185496: Improve performance of system properties initialization in initPhase1

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8213424: VersionProps duplicate and skipped initialization

Reviewed-by: mchung, redestad, dholmes
This commit is contained in:
Roger Riggs 2018-11-09 13:28:16 -05:00
parent 1b20a6781f
commit 29e742273e
12 changed files with 311 additions and 184 deletions
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3
src/java.base/share/classes/java/lang/System.java
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@ -802,6 +802,7 @@ public final class System {
if (props == null) {
props = new Properties();
initProperties(props);
VersionProps.init(props);
}
System.props = props;
}
@ -1973,6 +1974,7 @@ public final class System {
// be put into it directly.
props = new Properties(84);
initProperties(props); // initialized by the VM
VersionProps.init(props);
// There are certain system configurations that may be controlled by
// VM options such as the maximum amount of direct memory and
@ -1992,7 +1994,6 @@ public final class System {
lineSeparator = props.getProperty("line.separator");
StaticProperty.javaHome(); // Load StaticProperty to cache the property values
VersionProps.init();
FileInputStream fdIn = new FileInputStream(FileDescriptor.in);
FileOutputStream fdOut = new FileOutputStream(FileDescriptor.out);