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comparison jvmci/jdk.vm.ci.runtime/src/jdk/vm/ci/runtime/JVMCI.java @ 22672:1bbd4a7c274b

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Rename jdk.internal.jvmci to jdk.vm.ci
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Thu, 08 Oct 2015 17:28:41 -0700
parents jvmci/jdk.internal.jvmci.runtime/src/jdk/internal/jvmci/runtime/JVMCI.java@ec96f33a101d
children
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22671:97f30e4d0e95 22672:1bbd4a7c274b
1 /*
2 * Copyright (c) 2015, 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 package jdk.vm.ci.runtime;
24
25 import java.util.Formatter;
26
27 public class JVMCI {
28
29 private static final JVMCIRuntime runtime;
30
31 private static native JVMCIRuntime initializeRuntime();
32
33 public static void initialize() {
34 // force static initializer
35 }
36
37 /**
38 * Gets the singleton {@link JVMCIRuntime} instance available to the application.
39 *
40 * @throws UnsupportedOperationException if JVMCI is not supported
41 */
42 public static JVMCIRuntime getRuntime() {
43 if (runtime == null) {
44 String javaHome = System.getProperty("java.home");
45 String vmName = System.getProperty("java.vm.name");
46 Formatter errorMessage = new Formatter();
47 errorMessage.format("The VM does not support the JVMCI API.%n");
48 errorMessage.format("Currently used Java home directory is %s.%n", javaHome);
49 errorMessage.format("Currently used VM configuration is: %s", vmName);
50 throw new UnsupportedOperationException(errorMessage.toString());
51 }
52 return runtime;
53 }
54
55 static {
56 JVMCIRuntime rt = null;
57 try {
58 rt = initializeRuntime();
59 } catch (UnsatisfiedLinkError e) {
60 }
61 runtime = rt;
62 }
63 }