Mercurial > hg > truffle
diff graal/com.oracle.jvmci.runtime/src/com/oracle/jvmci/runtime/JVMCI.java @ 21527:07b088d61d5d
added HotSpotJVMCIRuntime* classes, replaced references to HotSpotGraalRuntime in VM with HotSpotJVMCIRuntime (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 22 May 2015 23:26:20 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.jvmci.runtime/src/com/oracle/jvmci/runtime/JVMCI.java Fri May 22 23:26:20 2015 +0200 @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.oracle.jvmci.runtime; + +import java.util.*; + +public class JVMCI { + + private static final JVMCIRuntime runtime; + + private static native JVMCIRuntime initializeRuntime(); + + /** + * Gets the singleton {@link JVMCIRuntime} instance available to the application. + * + * @throws UnsupportedOperationException if JVMCI is not supported + */ + public static JVMCIRuntime getRuntime() { + if (runtime == null) { + String javaHome = System.getProperty("java.home"); + String vmName = System.getProperty("java.vm.name"); + Formatter errorMessage = new Formatter(); + errorMessage.format("The VM does not support the JVMCI API.%n"); + errorMessage.format("Currently used Java home directory is %s.%n", javaHome); + errorMessage.format("Currently used VM configuration is: %s", vmName); + throw new UnsupportedOperationException(errorMessage.toString()); + } + return runtime; + } + + static { + JVMCIRuntime rt = null; + try { + rt = initializeRuntime(); + } catch (UnsatisfiedLinkError e) { + } + runtime = rt; + } +}