Mercurial > hg > graal-compiler
view graal/com.oracle.nfi/src/com/oracle/nfi/NativeFunctionInterfaceRuntime.java @ 22479:76796d99bcc9
update truffle import version
author | Andreas Woess <andreas.woess@oracle.com> |
---|---|
date | Tue, 18 Aug 2015 20:54:23 +0200 |
parents | 3e7ab72bac96 |
children | 05183a084a08 |
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/* * Copyright (c) 2013, 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.nfi; import java.lang.reflect.*; import com.oracle.nfi.api.*; /** * Class for obtaining the {@link NativeFunctionInterface} (if any) provided by the VM. */ public final class NativeFunctionInterfaceRuntime { private static final NativeFunctionInterface INSTANCE; /** * Gets the {@link NativeFunctionInterface} (if any) provided by the VM. * * @return null if the VM does not provide a {@link NativeFunctionInterface} */ public static NativeFunctionInterface getNativeFunctionInterface() { return INSTANCE; } static { NativeFunctionInterface instance = null; NativeFunctionInterfaceAccess access = null; Class<?> servicesClass = null; try { servicesClass = Class.forName("jdk.internal.jvmci.service.Services"); } catch (ClassNotFoundException e) { try { // Legacy support servicesClass = Class.forName("com.oracle.jvmci.service.Services"); } catch (ClassNotFoundException e2) { // JVMCI is unavailable } } if (servicesClass != null) { try { Method m = servicesClass.getDeclaredMethod("loadSingle", Class.class, boolean.class); access = (NativeFunctionInterfaceAccess) m.invoke(null, NativeFunctionInterfaceAccess.class, false); } catch (Throwable e) { // Fail fast for other errors throw (InternalError) new InternalError().initCause(e); } } // TODO: try standard ServiceLoader? if (access != null) { instance = access.getNativeFunctionInterface(); } INSTANCE = instance; } }