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 /*
  26  * @test
  27  * @bug 8136421
  28  * @requires (vm.arch == "x64" | vm.arch == "sparcv9" | vm.arch == "arm64")
  29  * @library /testlibrary /
  30  * @modules java.base/jdk.internal.misc
  31  * @modules jdk.vm.ci/jdk.vm.ci.hotspot
  32  *          jdk.vm.ci/jdk.vm.ci.runtime
  33  * @run main/othervm -XX:+UnlockExperimentalVMOptions
  34  *      -Dcompiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives.positive=true
  35  *      -XX:+EnableJVMCI
  36  *      compiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives
  37  * @run main/othervm -XX:+UnlockExperimentalVMOptions
  38  *      -Dcompiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives.positive=false
  39  *      -XX:-EnableJVMCI
  40  *      compiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives
  41 
  42  */
  43 
  44 package compiler.jvmci.compilerToVM;
  45 
  46 import jdk.vm.ci.runtime.JVMCI;
  47 import jdk.test.lib.Asserts;
  48 
  49 import java.lang.reflect.Method;
  50 
  51 public class JVM_RegisterJVMCINatives {
  52     private static final boolean IS_POSITIVE = Boolean.getBoolean(
  53             "compiler.jvmci.compilerToVM.JVM_RegisterJVMCINatives.positive");
  54 
  55     private final Method registerNatives;
  56 
  57     public static void main(String[] args) {
  58         new JVM_RegisterJVMCINatives().runTest();
  59     }
  60 
  61     private void runTest() {
  62         Object result;
  63         try {
  64             result = invoke();
  65         } catch (InternalError e) {
  66             if (IS_POSITIVE) {
  67                 throw new AssertionError("unexpected exception", e);
  68             }
  69             return;
  70         }
  71         if (!IS_POSITIVE) {
  72             throw new AssertionError("didn't get expected exception");
  73         }
  74         Asserts.assertNull(result,
  75                 "registerNatives()V returned non-null");
  76         Asserts.assertEQ(result, invoke(),
  77                 "registerNatives returns different results");
  78 
  79     }
  80     private Object invoke() {
  81         Object result;
  82         try {
  83             result = registerNatives.invoke(JVMCI.class);
  84         } catch (ReflectiveOperationException e) {
  85             throw new Error("can't invoke registerNatives", e);
  86         }
  87         return result;
  88     }
  89 
  90     private JVM_RegisterJVMCINatives() {
  91         Method method;
  92         try {
  93             method = Class.forName("jdk.vm.ci.hotspot.CompilerToVM",
  94                     /* initialize = */ false,
  95                     this.getClass().getClassLoader())
  96                     .getDeclaredMethod("registerNatives");
  97             method.setAccessible(true);
  98         } catch (ReflectiveOperationException e) {
  99             throw new Error("can't find CompilerToVM::registerNatives", e);
 100         }
 101         registerNatives = method;
 102     }
 103 }