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view graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/RootNodeTest.java @ 10879:d55f24eac4b1
PTX support for Linux
author | Morris Meyer <morris.meyer@oracle.com> |
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date | Thu, 25 Jul 2013 22:15:30 -0400 |
parents | 5e3d1a68664e |
children | df1d665ca846 |
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/* * Copyright (c) 2012, 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. * * 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.truffle.api.test; import org.junit.*; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.nodes.*; /** * <h3>Creating a Root Node</h3> * * <p> * A Truffle root node is the entry point into a Truffle tree that represents a guest language * method. It contains a {@link RootNode#execute(VirtualFrame)} method that can return a * {@link java.lang.Object} value as the result of the guest language method invocation. This method * must however never be called directly. Instead, the Truffle runtime must be used to create a * {@link CallTarget} object from a root node using the * {@link TruffleRuntime#createCallTarget(RootNode)} method. This call target object can then be * executed using the {@link CallTarget#call()} method or one of its overloads. * </p> * * <p> * The next part of the Truffle API introduction is at * {@link com.oracle.truffle.api.test.ChildNodeTest}. * </p> */ public class RootNodeTest { @Test public void test() { TruffleRuntime runtime = Truffle.getRuntime(); TestRootNode rootNode = new TestRootNode(); CallTarget target = runtime.createCallTarget(rootNode); Object result = target.call(); Assert.assertEquals(42, result); } class TestRootNode extends RootNode { @Override public Object execute(VirtualFrame frame) { return 42; } } }