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