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  *
  29  * @run main/othervm -XX:-BackgroundCompilation -XX:TieredStopAtLevel=3 -XX:TypeProfileLevel=111
  30  *                   -XX:Tier3InvocationThreshold=200 -XX:Tier0InvokeNotifyFreqLog=7
  31  *                   compiler.profiling.TestUnexpectedProfilingMismatch
  32  */
  33 
  34 package compiler.profiling;
  35 
  36 import java.lang.invoke.MethodHandle;
  37 import java.lang.invoke.MethodHandles;
  38 import java.lang.invoke.MethodType;
  39 
  40 public class TestUnexpectedProfilingMismatch {
  41 
  42     static class A {
  43     }
  44 
  45     static class B {
  46     }
  47 
  48     static void mA(A a) {
  49     }
  50 
  51     static void mB(B b) {
  52     }
  53 
  54     static final MethodHandle mhA;
  55     static final MethodHandle mhB;
  56     static {
  57         MethodHandles.Lookup lookup = MethodHandles.lookup();
  58         MethodType mt = MethodType.methodType(void.class, A.class);
  59         MethodHandle res = null;
  60         try {
  61             res = lookup.findStatic(TestUnexpectedProfilingMismatch.class, "mA", mt);
  62         } catch(NoSuchMethodException ex) {
  63         } catch(IllegalAccessException ex) {
  64         }
  65         mhA = res;
  66         mt = MethodType.methodType(void.class, B.class);
  67         try {
  68             res = lookup.findStatic(TestUnexpectedProfilingMismatch.class, "mB", mt);
  69         } catch(NoSuchMethodException ex) {
  70         } catch(IllegalAccessException ex) {
  71         }
  72         mhB = res;
  73     }
  74 
  75     void m1(A a, boolean doit) throws Throwable {
  76         if (doit) {
  77             mhA.invoke(a);
  78         }
  79     }
  80 
  81     void m2(B b) throws Throwable {
  82         mhB.invoke(b);
  83     }
  84 
  85     static public void main(String[] args) {
  86         TestUnexpectedProfilingMismatch tih = new TestUnexpectedProfilingMismatch();
  87         A a = new A();
  88         B b = new B();
  89         try {
  90             for (int i = 0; i < 256 - 1; i++) {
  91                 tih.m1(a, true);
  92             }
  93             // Will trigger the compilation but will also run once
  94             // more interpreted with a non null MDO which it will
  95             // update. Make it skip the body of the method.
  96             tih.m1(a, false);
  97             // Compile this one as well and do the profiling
  98             for (int i = 0; i < 256; i++) {
  99                 tih.m2(b);
 100             }
 101             // Will run and see a conflict
 102             tih.m1(a, true);
 103         } catch(Throwable ex) {
 104             ex.printStackTrace();
 105         }
 106         System.out.println("TEST PASSED");
 107     }
 108 }