| /* |
| * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * |
| * @summary converted from VM Testbase jit/deoptimization/test07. |
| * VM Testbase keywords: [jit, quick] |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @build jit.deoptimization.test07.test07 |
| * @run driver ExecDriver --java jit.deoptimization.test07.test07 |
| */ |
| |
| package jit.deoptimization.test07; |
| |
| import nsk.share.TestFailure; |
| |
| /* |
| * Simple recursion that should cause hotspot to deoptimize |
| * used_alot and A.foo and A.bar methods |
| * Expected result for the test is: 0 |
| * |
| * run with the -XX:TraceDeoptimization to observ the result. |
| */ |
| |
| class test07 { |
| public static void main (String[] args) { |
| A obj = new A(); |
| for (int index = 0; index < 1; index++) { |
| obj.used_alot(); |
| } |
| } |
| } |
| |
| class A { |
| static int result = 0; |
| |
| synchronized public int foo(int index, int iter) { |
| if (index == 0) |
| return result; |
| else if (iter <= sIteration / 2) { |
| result = bar(index) * foo(--index, iter); |
| } else { |
| try { |
| // halfway through the max iterations |
| // create a B. This should cause the |
| // used_alot to be deoptimized |
| // Call b.frame for the remaining part of the recursion |
| if (b == null) |
| b = Class.forName("jit.deoptimization.test07.B").newInstance(); |
| result *= ((B)b).foo(index, iter); |
| } catch (Exception x) { |
| throw new TestFailure("Class not found: B"); |
| } |
| } |
| return result; |
| } |
| |
| // Does nothing but it will let be over written in class C, See Below |
| synchronized public int bar(int index) { |
| synchronized (this) { |
| for (int i=0; i<5; i++) |
| index--; |
| } |
| return 0; |
| } |
| |
| synchronized public void used_alot() { |
| int result = 1; |
| |
| for (int index = 1; index <= sIteration; index++) { |
| result *= foo(index, index); |
| } |
| |
| if (result != 0) { |
| throw new TestFailure("Result: " + result); |
| } |
| } |
| |
| protected Object b = null; |
| protected static final int sIteration = 1000; |
| } |
| |
| class B extends A { |
| // Override foo in order to force deoptimization. |
| // Also creates and instance of class C in the last |
| // iteration in order to force A.foo to get deoptimized |
| // otherwise just do something stupid. |
| synchronized public int foo(int index, int iter) { |
| // Make sure that this class was created at least |
| // halfway through the iteration. Simple sanity check |
| if (iter < sIteration /2) { |
| System.out.println ("class B create to early"); |
| System.exit(1); |
| } |
| |
| if (iter == sIteration) { |
| try { |
| result = ((C)(Class.forName("jit.deoptimization.test07.C").newInstance())).foo(index,iter); |
| result *= ((C)(Class.forName("jit.deoptimization.test07.C").newInstance())).bar(index); |
| |
| } catch (Exception x) { |
| throw new TestFailure("Class not found: C"); |
| } |
| } else { |
| result = bar(index); |
| if (index != 0) |
| result += foo(--index, iter); |
| } |
| return result; |
| } |
| } |
| |
| class C extends B { |
| synchronized public int foo(int index, int iter) { |
| for (int i=0; i<iter; i++) |
| result = bar(i); |
| |
| try { |
| result = ((D)(Class.forName("jit.deoptimization.test07.D").newInstance())).bar(index); |
| } catch (Exception x) { |
| throw new TestFailure("Class not found: D"); |
| } |
| return result; |
| } |
| } |
| |
| class D extends C { |
| synchronized public int bar(int index) { |
| return 1; |
| } |
| } |