/* * Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package sun.java2d.loops;/** * GraphicsPrimitiveProxy * * Acts as a proxy for instances of GraphicsPrimitive, enabling lazy * classloading of these primitives. This leads to a substantial * savings in start-up time and footprint. In the typical case, * it has been found that a small number of GraphicsPrimitive instance * actually end up getting instantiated. * <p> * Note that the makePrimitive method should never be invoked on * a GraphicsPrimitiveProxy object since they are instantiated as * soon as they are found in the primitive list and never returned * to the caller. */public class GraphicsPrimitiveProxy extends GraphicsPrimitive { private Class owner; private String relativeClassName; /** * Create a GraphicsPrimitiveProxy for a primitive with a no-argument * constructor. * * @param owner The owner class for this primitive. The primitive * must be in the same package as this owner. * @param relativeClassName The name of the class this is a proxy for. * This should not include the package. */ public GraphicsPrimitiveProxy(Class owner, String relativeClassName, String methodSignature, int primID, SurfaceType srctype, CompositeType comptype, SurfaceType dsttype) { super(methodSignature, primID, srctype, comptype, dsttype); this.owner = owner; this.relativeClassName = relativeClassName; } public GraphicsPrimitive makePrimitive(SurfaceType srctype, CompositeType comptype, SurfaceType dsttype) { // This should never happen. throw new InternalError("makePrimitive called on a Proxy!"); } // // Come up with the real instance. Called from // GraphicsPrimitiveMgr.locate() // GraphicsPrimitive instantiate() { String name = getPackageName(owner.getName()) + "." + relativeClassName; try { Class clazz = Class.forName(name); GraphicsPrimitive p = (GraphicsPrimitive) clazz.newInstance(); if (!satisfiesSameAs(p)) { throw new RuntimeException("Primitive " + p + " incompatible with proxy for " + name); } return p; } catch (ClassNotFoundException ex) { throw new RuntimeException(ex.toString()); } catch (InstantiationException ex) { throw new RuntimeException(ex.toString()); } catch (IllegalAccessException ex) { throw new RuntimeException(ex.toString()); } // A RuntimeException should never happen in a deployed JDK, because // the regression test GraphicsPrimitiveProxyTest will catch any // of these errors. } private static String getPackageName(String className) { int lastDotIdx = className.lastIndexOf('.'); if (lastDotIdx < 0) { return className; } return className.substring(0, lastDotIdx); } public GraphicsPrimitive traceWrap() { return instantiate().traceWrap(); }}
/*
* Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.java2d.loops;
/**
* GraphicsPrimitiveProxy
*
* Acts as a proxy for instances of GraphicsPrimitive, enabling lazy
* classloading of these primitives. This leads to a substantial
* savings in start-up time and footprint. In the typical case,
* it has been found that a small number of GraphicsPrimitive instance
* actually end up getting instantiated.
* <p>
* Note that the makePrimitive method should never be invoked on
* a GraphicsPrimitiveProxy object since they are instantiated as
* soon as they are found in the primitive list and never returned
* to the caller.
*/
public class GraphicsPrimitiveProxy extends GraphicsPrimitive {
private Class owner;
private String relativeClassName;
/**
* Create a GraphicsPrimitiveProxy for a primitive with a no-argument
* constructor.
*
* @param owner The owner class for this primitive. The primitive
* must be in the same package as this owner.
* @param relativeClassName The name of the class this is a proxy for.
* This should not include the package.
*/
public GraphicsPrimitiveProxy(Class owner, String relativeClassName,
String methodSignature,
int primID,
SurfaceType srctype,
CompositeType comptype,
SurfaceType dsttype)
{
super(methodSignature, primID, srctype, comptype, dsttype);
this.owner = owner;
this.relativeClassName = relativeClassName;
}
public GraphicsPrimitive makePrimitive(SurfaceType srctype,
CompositeType comptype,
SurfaceType dsttype) {
// This should never happen.
throw new InternalError("makePrimitive called on a Proxy!");
}
//
// Come up with the real instance. Called from
// GraphicsPrimitiveMgr.locate()
//
GraphicsPrimitive instantiate() {
String name = getPackageName(owner.getName()) + "."
+ relativeClassName;
try {
Class clazz = Class.forName(name);
GraphicsPrimitive p = (GraphicsPrimitive) clazz.newInstance();
if (!satisfiesSameAs(p)) {
throw new RuntimeException("Primitive " + p
+ " incompatible with proxy for "
+ name);
}
return p;
} catch (ClassNotFoundException ex) {
throw new RuntimeException(ex.toString());
} catch (InstantiationException ex) {
throw new RuntimeException(ex.toString());
} catch (IllegalAccessException ex) {
throw new RuntimeException(ex.toString());
}
// A RuntimeException should never happen in a deployed JDK, because
// the regression test GraphicsPrimitiveProxyTest will catch any
// of these errors.
}
private static String getPackageName(String className) {
int lastDotIdx = className.lastIndexOf('.');
if (lastDotIdx < 0) {
return className;
}
return className.substring(0, lastDotIdx);
}
public GraphicsPrimitive traceWrap() {
return instantiate().traceWrap();
}
}