Mercurial > hg > truffle
view graal/com.oracle.graal.api.runtime/src/com/oracle/graal/api/runtime/Graal.java @ 15662:50fbda571d99
mx: added jrelibrary dependency type
mx: once mx/projects is loaded, projects and libraries that depend on non-existent JRE library or have a javaCompliance higher than any available JDK are ignored
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 15 May 2014 15:31:22 +0200 |
parents | 33cedbce5b23 |
children | 9ca36e4e3137 |
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/* * Copyright (c) 2012, 2012, 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.lang.reflect.*; import sun.reflect.*; public class Graal { private static final GraalRuntime runtime; private static native GraalRuntime initializeRuntime(); public static final java.security.Permission ACCESS_PERMISSION = new ReflectPermission("allowGraalAccess"); @CallerSensitive public static GraalRuntime getRuntime() { SecurityManager sm = System.getSecurityManager(); if (sm != null) { Class<?> cc = Reflection.getCallerClass(); if (cc.getClassLoader() != null) { sm.checkPermission(ACCESS_PERMISSION); } } return runtime; } static { GraalRuntime rt; try { rt = initializeRuntime(); } catch (UnsatisfiedLinkError e) { rt = new InvalidGraalRuntime(); } runtime = rt; Reflection.registerFieldsToFilter(Graal.class, "runtime"); } @CallerSensitive public static <T> T getRequiredCapability(Class<T> clazz) { SecurityManager sm = System.getSecurityManager(); if (sm != null) { Class<?> cc = Reflection.getCallerClass(); if (cc.getClassLoader() != null) { sm.checkPermission(ACCESS_PERMISSION); } } T t = getRuntime().getCapability(clazz); if (t == null) { String javaHome = System.getProperty("java.home"); String vmName = System.getProperty("java.vm.name"); StringBuilder errorMessage = new StringBuilder(); if (runtime.getClass() == InvalidGraalRuntime.class) { errorMessage.append(String.format("The VM does not support the Graal API.\n")); } else { errorMessage.append(String.format("The VM does not expose required Graal capability %s.\n", clazz.getName())); } errorMessage.append(String.format("Currently used Java home directory is %s.\n", javaHome)); errorMessage.append(String.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; } } }