Mercurial > hg > graal-compiler
view test/compiler/stable/StableConfiguration.java @ 20997:370dbf93f0ca
Merge
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Thu, 16 Apr 2015 20:08:18 +0200 |
parents | ee1c924763d2 |
children |
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/* * Copyright (c) 2014, 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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 java.lang.invoke; import java.lang.reflect.Method; import java.util.Properties; import sun.hotspot.WhiteBox; public class StableConfiguration { static final WhiteBox WB = WhiteBox.getWhiteBox(); static final boolean isStableEnabled; static final boolean isServerWithStable; static { Boolean value = WB.getBooleanVMFlag("FoldStableValues"); isStableEnabled = (value == null ? false : value); isServerWithStable = isStableEnabled && get(); System.out.println("@Stable: " + (isStableEnabled ? "enabled" : "disabled")); System.out.println("Server Compiler: " + get()); } // ::get() is among immediately compiled methods. static boolean get() { try { Method m = StableConfiguration.class.getDeclaredMethod("get"); int level = WB.getMethodCompilationLevel(m); if (level > 0) { return (level == 4); } else { String javaVM = System.getProperty("java.vm.name", ""); if (javaVM.contains("Server")) return true; if (javaVM.contains("Client")) return false; throw new Error("Unknown VM type: "+javaVM); } } catch (NoSuchMethodException e) { throw new Error(e); } } }