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 * @bug 8067247 27 * @modules java.base/jdk.internal.misc 28 * @library /test/lib 29 * 30 * @run main/bootclasspath/othervm -Xcomp -Xbatch 31 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 32 * -XX:CompileCommand=compileonly,compiler.jsr292.InvokerGC::test 33 * compiler.jsr292.InvokerGC 34 */ 35 36 package compiler.jsr292; 37 38 import sun.hotspot.WhiteBox; 39 40 import java.lang.invoke.MethodHandle; 41 import java.lang.invoke.MethodHandles; 42 import java.lang.invoke.MethodType; 43 44 public class InvokerGC { 45 static final WhiteBox WB = WhiteBox.getWhiteBox(); 46 47 static MethodHandle mh; 48 static { 49 try { 50 mh = MethodHandles.lookup().findStatic(InvokerGC.class, "dummy", MethodType.methodType(void.class)); 51 } catch (Exception e) { 52 throw new Error(e); 53 } 54 } 55 56 static void dummy() {} 57 58 static void test() { 59 try { 60 mh.invoke(); 61 } catch (Throwable e) { 62 throw new Error(e); 63 } 64 } 65 66 public static void main(String[] args) throws Throwable { 67 mh.invoke(); // Pre-generate an invoker for ()V signature 68 69 test(); // trigger method compilation 70 test(); 71 72 WB.fullGC(); // WB.fullGC has always clear softref policy. 73 74 test(); 75 76 WB.clearInlineCaches(true); // Preserve static stubs. 77 78 test(); // Trigger call site re-resolution. Invoker LambdaForm should stay the same. 79 80 System.out.println("TEST PASSED"); 81 } 82 }