JohnTortugo

HotSpot Escape Analysis and Scalar Replacement Status

Introduction

Escape Analysis (EA) is a compiler analysis to answer the following questions for a given object O, method M, and thread T.

• Escapes(O, M): Does object O outlive the execution of method M? This may happen for instance if a reference to O is assigned to a global variable.
• Escapes(O, T): Does object O escape the current execution thread? This may happen for instance if a reference to O is copied to another thread.

Answers to these questions enable a compiler to perform a few highly effective optimizations, for instance, Stack Allocation (SA), Lock Elision (LE), and Scalar Replacement of Aggregates (SRA). Note that,

miguelmota

Linux sudo GUI prompt

useful for applications that need to run scripts as root

(default ubuntu)

/usr/bin/pkexec --disable-internal-agent /bin/echo 'foo'

jewelsea

import javafx.scene.layout.StackPane;
import javafx.scene.web.WebView;

/**
 * A syntax highlighting code editor for JavaFX created by wrapping a
 * CodeMirror code editor in a WebView.
 *
 * See http://codemirror.net for more information on using the codemirror editor.
 */
public class CodeEditor extends StackPane {