1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @modules java.base/jdk.internal.misc 27 * @library /testlibrary 28 * @run main ContinuousCallSiteTargetChange 29 */ 30 import java.lang.invoke.*; 31 import jdk.test.lib.*; 32 33 public class ContinuousCallSiteTargetChange { 34 static void testServer() throws Exception { 35 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 36 "-XX:+IgnoreUnrecognizedVMOptions", 37 "-server", "-XX:-TieredCompilation", "-Xbatch", 38 "-XX:PerBytecodeRecompilationCutoff=10", "-XX:PerMethodRecompilationCutoff=10", 39 "-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining", 40 "ContinuousCallSiteTargetChange$Test", "100"); 41 42 OutputAnalyzer analyzer = new OutputAnalyzer(pb.start()); 43 44 analyzer.shouldHaveExitValue(0); 45 46 analyzer.shouldNotContain("made not compilable"); 47 analyzer.shouldNotContain("decompile_count > PerMethodRecompilationCutoff"); 48 } 49 50 static void testClient() throws Exception { 51 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 52 "-XX:+IgnoreUnrecognizedVMOptions", 53 "-client", "-XX:+TieredCompilation", "-XX:TieredStopAtLevel=1", "-Xbatch", 54 "-XX:PerBytecodeRecompilationCutoff=10", "-XX:PerMethodRecompilationCutoff=10", 55 "-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintInlining", 56 "ContinuousCallSiteTargetChange$Test", "100"); 57 58 OutputAnalyzer analyzer = new OutputAnalyzer(pb.start()); 59 60 analyzer.shouldHaveExitValue(0); 61 62 analyzer.shouldNotContain("made not compilable"); 63 analyzer.shouldNotContain("decompile_count > PerMethodRecompilationCutoff"); 64 } 65 66 public static void main(String[] args) throws Exception { 67 testServer(); 68 testClient(); 69 } 70 71 static class Test { 72 static final MethodType mt = MethodType.methodType(void.class); 73 static final CallSite cs = new MutableCallSite(mt); 74 75 static final MethodHandle mh = cs.dynamicInvoker(); 76 77 static void f() { 78 } 79 80 static void test1() throws Throwable { 81 mh.invokeExact(); 82 } 83 84 static void test2() throws Throwable { 85 cs.getTarget().invokeExact(); 86 } 87 88 static void iteration() throws Throwable { 89 MethodHandle mh1 = MethodHandles.lookup().findStatic(ContinuousCallSiteTargetChange.Test.class, "f", mt); 90 cs.setTarget(mh1); 91 for (int i = 0; i < 20_000; i++) { 92 test1(); 93 test2(); 94 } 95 } 96 97 public static void main(String[] args) throws Throwable { 98 int iterations = Integer.parseInt(args[0]); 99 for (int i = 0; i < iterations; i++) { 100 iteration(); 101 } 102 } 103 } 104 }