1 /*
   2  * Copyright (c) 2013, 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 8027631
  27  * @summary profiling of arguments at calls cannot rely on signature of callee for types
  28  * @run main/othervm -XX:-BackgroundCompilation -XX:TieredStopAtLevel=3 -XX:TypeProfileLevel=111 -XX:Tier3InvocationThreshold=200 -XX:Tier0InvokeNotifyFreqLog=7 TestUnexpectedProfilingMismatch
  29  *
  30  */
  31 
  32 import java.lang.invoke.*;
  33 
  34 public class TestUnexpectedProfilingMismatch {
  35 
  36     static class A {
  37     }
  38 
  39     static class B {
  40     }
  41 
  42     static void mA(A a) {
  43     }
  44 
  45     static void mB(B b) {
  46     }
  47 
  48     static final MethodHandle mhA;
  49     static final MethodHandle mhB;
  50     static {
  51         MethodHandles.Lookup lookup = MethodHandles.lookup();
  52         MethodType mt = MethodType.methodType(void.class, A.class);
  53         MethodHandle res = null;
  54         try {
  55             res = lookup.findStatic(TestUnexpectedProfilingMismatch.class, "mA", mt);
  56         } catch(NoSuchMethodException ex) {
  57         } catch(IllegalAccessException ex) {
  58         }
  59         mhA = res;
  60         mt = MethodType.methodType(void.class, B.class);
  61         try {
  62             res = lookup.findStatic(TestUnexpectedProfilingMismatch.class, "mB", mt);
  63         } catch(NoSuchMethodException ex) {
  64         } catch(IllegalAccessException ex) {
  65         }
  66         mhB = res;
  67     }
  68 
  69     void m1(A a, boolean doit) throws Throwable {
  70         if (doit) {
  71             mhA.invoke(a);
  72         }
  73     }
  74 
  75     void m2(B b) throws Throwable {
  76         mhB.invoke(b);
  77     }
  78 
  79     static public void main(String[] args) {
  80         TestUnexpectedProfilingMismatch tih = new TestUnexpectedProfilingMismatch();
  81         A a = new A();
  82         B b = new B();
  83         try {
  84             for (int i = 0; i < 256 - 1; i++) {
  85                 tih.m1(a, true);
  86             }
  87             // Will trigger the compilation but will also run once
  88             // more interpreted with a non null MDO which it will
  89             // update. Make it skip the body of the method.
  90             tih.m1(a, false);
  91             // Compile this one as well and do the profiling
  92             for (int i = 0; i < 256; i++) {
  93                 tih.m2(b);
  94             }
  95             // Will run and see a conflict
  96             tih.m1(a, true);
  97         } catch(Throwable ex) {
  98             ex.printStackTrace();
  99         }
 100         System.out.println("TEST PASSED");
 101     }
 102 }