120 lines
4.1 KiB
Java
120 lines
4.1 KiB
Java
/*
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* Copyright (c) 2018, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @summary Verifies JVMTI support for Continuations
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* @requires vm.continuations
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* @compile ContinuationTest.java
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* @modules java.base/jdk.internal.vm
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* @run main/othervm/native --enable-preview -agentlib:ContinuationTest ContinuationTest
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*/
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import jdk.internal.vm.Continuation;
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import jdk.internal.vm.ContinuationScope;
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public class ContinuationTest {
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private static final String agentLib = "ContinuationTest";
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private static final ContinuationScope FOO = new ContinuationScope() {};
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static void log(String str) { System.out.println(str); }
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static native void enableEvents(Thread thread);
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static native boolean check();
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public static void main(String[] args) throws Exception {
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try {
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System.loadLibrary(agentLib);
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} catch (UnsatisfiedLinkError ex) {
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log("Failed to load " + agentLib + " lib");
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log("java.library.path: " + System.getProperty("java.library.path"));
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throw ex;
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}
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log("\n###### main: started #####\n");
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enableEvents(Thread.currentThread());
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ContinuationTest obj = new ContinuationTest();
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obj.runTest();
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if (!check()) {
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throw new RuntimeException("ContinuationTest failed: expected no FramePop events!");
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}
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log("ContinuationTest passed\n");
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log("\n##### main: finished #####\n");
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}
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public void runTest() {
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log("\n#### runTest: started ####\n");
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Continuation cont = new Continuation(FOO, ()-> {
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double dval = 0;
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log("\n## cont: started ##\n");
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for (int k = 1; k < 3; k++) {
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int ival = 3;
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String str = "abc";
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log("\n cont: iteration #" + (k - 1));
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log("\n<<<< runTest: before foo(): " + ival + ", " + str + ", " + dval + " <<<<");
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dval += foo(k);
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log( ">>>> runTest: after foo(): " + ival + ", " + str + ", " + dval + " >>>>");
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}
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log("\n## cont: finished ##\n");
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});
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int i = 0;
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while (!cont.isDone()) {
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log("\n## runTest: iteration #" + (i++));
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cont.run();
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System.gc();
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}
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log("\n#### runTest: finished ####\n");
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}
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static double foo(int iarg) {
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long lval = 8;
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String str1 = "yyy";
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log("\n#### foo: started ####\n");
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log("foo: before bar(): " + lval + ", " + str1 + ", " + iarg);
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String str2 = bar(iarg + 1);
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log("foo: after bar(): " + lval + ", " + str1 + ", " + str2);
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log("\n#### foo: finished ####\n");
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return Integer.parseInt(str2) + 1;
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}
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static String bar(long larg) {
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double dval = 9.99;
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String str = "zzz";
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log("\n#### bar: started ####\n");
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log("bar: before yield(): " + dval + ", " + str + ", " + larg);
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Continuation.yield(FOO);
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long lval = larg + 1;
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log("bar: after yield(): " + dval + ", " + str + ", " + lval);
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log("\n#### bar: finished ####\n");
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return "" + lval;
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}
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}
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