Mercurial > hg > truffle
view graal/com.oracle.graal.api.runtime/src/com/oracle/graal/api/runtime/Graal.java @ 21538:c1e2fdb5fea3
removed more dependencies from JVMCI classes to non-JVMCI classes (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 25 May 2015 17:20:39 +0200 |
parents | e37d1fe9f332 |
children | b1530a6cce8c |
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/* * Copyright (c) 2012, 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.graal.api.runtime; import java.util.*; import com.oracle.jvmci.runtime.*; import sun.reflect.*; /** * Access point for {@linkplain #getRuntime() retrieving} the single {@link GraalRuntime} instance. */ public class Graal { private static final GraalRuntime runtime = initializeRuntime(); private static GraalRuntime initializeRuntime() { GraalRuntime rt = null; for (GraalRuntimeFactory factory : Services.load(GraalRuntimeFactory.class)) { assert rt == null : String.format("Multiple %s implementations found: %s, %s", GraalRuntime.class.getName(), rt.getClass().getName(), factory.getRuntime().getClass().getName()); rt = factory.getRuntime(); } if (rt != null) { return rt; } return new InvalidGraalRuntime(); } /** * Gets the singleton {@link GraalRuntime} instance available to the application. */ public static GraalRuntime getRuntime() { return runtime; } /** * Gets a capability provided by the {@link GraalRuntime} instance available to the application. * * @throws UnsupportedOperationException if the capability is not available */ @CallerSensitive public static <T> T getRequiredCapability(Class<T> clazz) { T t = getRuntime().getCapability(clazz); if (t == null) { String javaHome = System.getProperty("java.home"); String vmName = System.getProperty("java.vm.name"); Formatter errorMessage = new Formatter(); if (runtime.getClass() == InvalidGraalRuntime.class) { errorMessage.format("The VM does not support the Graal API.%n"); } else { errorMessage.format("The VM does not expose required Graal capability %s.%n", clazz.getName()); } 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 t; } private static final class InvalidGraalRuntime implements GraalRuntime { @Override public String getName() { return ""; } @Override public <T> T getCapability(Class<T> clazz) { return null; } } }