1 /*
   2  * Copyright (c) 2015, 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 8136421
  27  * @requires vm.jvmci
  28  * @library /test/lib /
  29  * @modules java.base/jdk.internal.misc:open
  30  * @modules jdk.internal.vm.ci/jdk.vm.ci.hotspot:open
  31  *          jdk.internal.vm.ci/jdk.vm.ci.runtime
  32  * @run main/othervm -XX:+UnlockExperimentalVMOptions
  33  *      -Dcompiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives.positive=true
  34  *      -XX:+EnableJVMCI
  35  *      compiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives
  36  * @run main/othervm -XX:+UnlockExperimentalVMOptions
  37  *      -Dcompiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives.positive=false
  38  *      -XX:-EnableJVMCI -XX:-UseJVMCICompiler
  39  *      compiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives
  40  */
  41 
  42 package compiler.jvmci.compilerToVM;
  43 
  44 import jdk.test.lib.Asserts;
  45 import jdk.vm.ci.runtime.JVMCI;
  46 
  47 import java.lang.reflect.Method;
  48 
  49 public class JVM_RegisterJVMCINatives {
  50     private static final boolean IS_POSITIVE = Boolean.getBoolean(
  51             "compiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives.positive");
  52 
  53     private final Method registerNatives;
  54 
  55     public static void main(String[] args) {
  56         new JVM_RegisterJVMCINatives().runTest();
  57     }
  58 
  59     private void runTest() {
  60         Object result;
  61         try {
  62             result = invoke();
  63         } catch (InternalError e) {
  64             if (IS_POSITIVE) {
  65                 throw new AssertionError("unexpected exception", e);
  66             }
  67             return;
  68         }
  69         if (!IS_POSITIVE) {
  70             throw new AssertionError("didn't get expected exception");
  71         }
  72         Asserts.assertNull(result,
  73                 "registerNatives()V returned non-null");
  74         Asserts.assertEQ(result, invoke(),
  75                 "registerNatives returns different results");
  76 
  77     }
  78     private Object invoke() {
  79         Object result;
  80         try {
  81             result = registerNatives.invoke(JVMCI.class);
  82         } catch (ReflectiveOperationException e) {
  83             throw new Error("can't invoke registerNatives", e);
  84         }
  85         return result;
  86     }
  87 
  88     private JVM_RegisterJVMCINatives() {
  89         Method method;
  90         try {
  91             method = Class.forName("jdk.vm.ci.hotspot.CompilerToVM",
  92                     /* initialize = */ false,
  93                     this.getClass().getClassLoader())
  94                     .getDeclaredMethod("registerNatives");
  95             method.setAccessible(true);
  96         } catch (ReflectiveOperationException e) {
  97             throw new Error("can't find CompilerToVM::registerNatives", e);
  98         }
  99         registerNatives = method;
 100     }
 101 }