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6818072: Load Ductus using Class.forName if exist instead of using the service loader

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First attempt Class.forName to load Ductus class before using service loader

Reviewed-by: flar, prr
This commit is contained in:
Mandy Chung 2009-04-14 17:43:45 -07:00
parent e19d0ec5d0
commit 15dd62fcba
1 changed files with 19 additions and 2 deletions
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21
jdk/src/share/classes/sun/java2d/pipe/RenderingEngine.java
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@ -95,6 +95,11 @@ public abstract class RenderingEngine {
* <pre> * <pre>
* java -Dsun.java2d.renderer=&lt;classname&gt; * java -Dsun.java2d.renderer=&lt;classname&gt;
* </pre> * </pre>
*
* If no specific {@code RenderingEngine} is specified on the command
* or Ductus renderer is specified, it will attempt loading the
* sun.dc.DuctusRenderingEngine class using Class.forName as a fastpath;
* if not found, use the ServiceLoader.
* If no specific {@code RenderingEngine} is specified on the command * If no specific {@code RenderingEngine} is specified on the command
* line then the last one returned by enumerating all subclasses of * line then the last one returned by enumerating all subclasses of
* {@code RenderingEngine} known to the ServiceLoader is used. * {@code RenderingEngine} known to the ServiceLoader is used.
@ -115,9 +120,21 @@ public abstract class RenderingEngine {
reImpl = (RenderingEngine) reImpl = (RenderingEngine)
AccessController.doPrivileged(new PrivilegedAction() { AccessController.doPrivileged(new PrivilegedAction() {
public Object run() { public Object run() {
final String ductusREClass = "sun.dc.DuctusRenderingEngine";
String reClass = String reClass =
System.getProperty("sun.java2d.renderer", System.getProperty("sun.java2d.renderer", ductusREClass);
"sun.dc.DuctusRenderingEngine"); if (reClass.equals(ductusREClass)) {
try {
Class cls = Class.forName(ductusREClass);
return cls.newInstance();
} catch (ClassNotFoundException x) {
// not found
} catch (IllegalAccessException x) {
// should not reach here
} catch (InstantiationException x) {
// should not reach here
}
}
ServiceLoader<RenderingEngine> reLoader = ServiceLoader<RenderingEngine> reLoader =
ServiceLoader.loadInstalled(RenderingEngine.class); ServiceLoader.loadInstalled(RenderingEngine.class);