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 * @build GCTest NonInlinedReinvoker 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 44 import java.lang.ref.*; 45 import static jdk.test.lib.Asserts.*; 46 47 public class GCTest { 48 static final MethodHandles.Lookup LOOKUP = MethodHandles.Lookup.IMPL_LOOKUP; 49 50 static class T { 51 static int f1() { return 0; } 52 static int f2() { return 1; } 53 } 54 55 static @Stable MethodHandle mh; 56 static PhantomReference<LambdaForm> lform; 57 58 static final ReferenceQueue<LambdaForm> rq = new ReferenceQueue<>(); 59 static final WhiteBox WB = WhiteBox.getWhiteBox(); 60 61 @DontInline 62 static int invokeBasic() { 63 try { 64 return (int) mh.invokeBasic(); 65 } catch (Throwable e) { 66 throw new Error(e); 67 } 68 } 69 70 static void test(int expected) { 71 for (int i = 0; i < 20_000; i++) { 72 invokeBasic(); 73 } 74 assertEquals(invokeBasic(), expected); 75 } 76 77 public static void main(String[] args) throws Exception { 78 mh = NonInlinedReinvoker.make( 79 LOOKUP.findStatic(T.class, "f1", MethodType.methodType(int.class))); 80 81 // Monitor LambdaForm GC 82 lform = new PhantomReference<>(mh.form, rq); 83 84 test(0); 85 WB.clearInlineCaches(); 86 test(0); 87 88 mh = NonInlinedReinvoker.make( 89 LOOKUP.findStatic(T.class, "f2", MethodType.methodType(int.class))); 90 91 Reference<?> ref = null; 92 while (ref == null) { 93 WB.fullGC(); 94 try { 95 ref = rq.remove(1000); 96 } catch (InterruptedException e) { /*ignore*/ } 97 } 98 99 test(1); 100 WB.clearInlineCaches(); 101 test(1); 102 103 System.out.println("TEST PASSED"); 104 } 105 }