1 /* 2 * Copyright (c) 2015, 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 * @bug 8072008 27 * @library /testlibrary /test/lib 28 * @compile GCTest.java NonInlinedReinvoker.java 29 * @run main ClassFileInstaller sun.hotspot.WhiteBox 30 * sun.hotspot.WhiteBox$WhiteBoxPermission 31 * java.lang.invoke.GCTest 32 * java.lang.invoke.GCTest$T 33 * java.lang.invoke.NonInlinedReinvoker 34 * jdk.test.lib.Asserts 35 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions 36 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 37 * -Xbatch -XX:-TieredCompilation -XX:CICompilerCount=1 38 * java.lang.invoke.GCTest 39 */ 40 package java.lang.invoke; 41 42 import sun.hotspot.WhiteBox; 43 import jdk.internal.vm.annotation.DontInline; 44 import jdk.internal.vm.annotation.Stable; 45 import java.lang.ref.*; 46 import static jdk.test.lib.Asserts.*; 47 48 public class GCTest { 49 static final MethodHandles.Lookup LOOKUP = MethodHandles.Lookup.IMPL_LOOKUP; 50 51 static class T { 52 static int f1() { return 0; } 53 static int f2() { return 1; } 54 } 55 56 static @Stable MethodHandle mh; 57 static PhantomReference<LambdaForm> lform; 58 59 static final ReferenceQueue<LambdaForm> rq = new ReferenceQueue<>(); 60 static final WhiteBox WB = WhiteBox.getWhiteBox(); 61 62 @DontInline 63 static int invokeBasic() { 64 try { 65 return (int) mh.invokeBasic(); 66 } catch (Throwable e) { 67 throw new Error(e); 68 } 69 } 70 71 static void test(int expected) { 72 for (int i = 0; i < 20_000; i++) { 73 invokeBasic(); 74 } 75 assertEquals(invokeBasic(), expected); 76 } 77 78 public static void main(String[] args) throws Exception { 79 mh = NonInlinedReinvoker.make( 80 LOOKUP.findStatic(T.class, "f1", MethodType.methodType(int.class))); 81 82 // Monitor LambdaForm GC 83 lform = new PhantomReference<>(mh.form, rq); 84 85 test(0); 86 WB.clearInlineCaches(); 87 test(0); 88 89 mh = NonInlinedReinvoker.make( 90 LOOKUP.findStatic(T.class, "f2", MethodType.methodType(int.class))); 91 92 Reference<?> ref = null; 93 while (ref == null) { 94 WB.fullGC(); 95 try { 96 ref = rq.remove(1000); 97 } catch (InterruptedException e) { /*ignore*/ } 98 } 99 100 test(1); 101 WB.clearInlineCaches(); 102 test(1); 103 104 System.out.println("TEST PASSED"); 105 } 106 }