/*
* Copyright (c) 2018, 2018, 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 com.oracle.svm.methodhandles;
import com.oracle.svm.core.annotate.Alias;
import com.oracle.svm.core.annotate.Substitute;
import com.oracle.svm.core.annotate.TargetClass;
@TargetClass(className = "java.lang.invoke.LambdaForm", onlyWith = MethodHandlesSupported.class)
public final class Target_java_lang_invoke_LambdaForm {
@Alias Target_java_lang_invoke_MemberName vmentry;
@Alias
native String lambdaName();
@Substitute
void compileToBytecode() {
/*
* Those lambda form types are required to be precompiled to bytecode during method handles
* bootstrapping to avoid a cyclic dependency. No further initialization is required since
* these forms are executed as intrinsics (@see MethodHandleIntrinsic)
*/
if (lambdaName().equals("zero") || lambdaName().equals("identity")) {
vmentry = new Target_java_lang_invoke_MemberName();
}
}
/*
* We do not want invokers for lambda forms to be generated at runtime.
*/
@Substitute
@SuppressWarnings("static-method")
private boolean forceInterpretation() {
return true;
}
@Alias
native Object interpretWithArguments(Object... argumentValues) throws Throwable;
}
@TargetClass(className = "java.lang.invoke.LambdaForm", innerClass = "NamedFunction", onlyWith = MethodHandlesSupported.class)
final class Target_java_lang_invoke_LambdaForm_NamedFunction {
@Alias
native Target_java_lang_invoke_MethodHandle resolvedHandle();
/*
* Avoid triggering the generation of an optimized invoker.
*/
@Substitute
Object invokeWithArguments(Object... arguments) throws Throwable {
return resolvedHandle().invokeBasic(arguments);
}
}