1 /*
   2  * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.hotspot;
  26 
  27 import java.lang.reflect.Field;
  28 import java.lang.reflect.Modifier;
  29 
  30 import org.graalvm.compiler.api.replacements.Fold;
  31 import org.graalvm.compiler.api.replacements.Fold.InjectedParameter;
  32 
  33 import jdk.vm.ci.common.JVMCIError;
  34 import jdk.vm.ci.hotspot.HotSpotVMConfigAccess;
  35 import jdk.vm.ci.hotspot.HotSpotVMConfigStore;
  36 import jdk.vm.ci.meta.MetaAccessProvider;
  37 
  38 /**
  39  * This is a source with different versions for various JDKs.
  40  */
  41 public abstract class GraalHotSpotVMConfigBase extends HotSpotVMConfigAccess {
  42 
  43     GraalHotSpotVMConfigBase(HotSpotVMConfigStore store) {
  44         super(store);
  45         assert this instanceof GraalHotSpotVMConfig;
  46         versioned = new GraalHotSpotVMConfigVersioned(store);
  47         assert checkVersioned();
  48     }
  49 
  50     private boolean checkVersioned() {
  51         Class<? extends GraalHotSpotVMConfigVersioned> c = versioned.getClass();
  52         for (Field field : c.getDeclaredFields()) {
  53             int modifiers = field.getModifiers();
  54             if (!Modifier.isStatic(modifiers)) {
  55                 // javac inlines non-static final fields which means
  56                 // versioned values are ignored in non-flattened Graal
  57                 assert !Modifier.isFinal(modifiers) : "Non-static field in " + c.getName() + " must not be final: " + field.getName();
  58             }
  59         }
  60         return true;
  61     }
  62 
  63     /**
  64      * Contains values that are different between JDK versions.
  65      */
  66     protected final GraalHotSpotVMConfigVersioned versioned;
  67 
  68     /**
  69      * Sentinel value to use for an {@linkplain InjectedParameter injected}
  70      * {@link GraalHotSpotVMConfig} parameter to a {@linkplain Fold foldable} method.
  71      */
  72     public static final GraalHotSpotVMConfig INJECTED_VMCONFIG = null;
  73     public static final MetaAccessProvider INJECTED_METAACCESS = null;
  74 
  75     public final String osName = getHostOSName();
  76     public final String osArch = getHostArchitectureName();
  77     public final boolean windowsOs = System.getProperty("os.name", "").startsWith("Windows");
  78     public final boolean linuxOs = System.getProperty("os.name", "").startsWith("Linux");
  79 
  80     /**
  81      * Gets the host operating system name.
  82      */
  83     private static String getHostOSName() {
  84         String osName = System.getProperty("os.name");
  85         switch (osName) {
  86             case "Linux":
  87                 osName = "linux";
  88                 break;
  89             case "SunOS":
  90                 osName = "solaris";
  91                 break;
  92             case "Mac OS X":
  93                 osName = "bsd";
  94                 break;
  95             default:
  96                 // Of course Windows is different...
  97                 if (osName.startsWith("Windows")) {
  98                     osName = "windows";
  99                 } else {
 100                     throw new JVMCIError("Unexpected OS name: " + osName);
 101                 }
 102         }
 103         return osName;
 104     }
 105 
 106     private static String getHostArchitectureName() {
 107         String arch = System.getProperty("os.arch");
 108         switch (arch) {
 109             case "x86_64":
 110                 arch = "amd64";
 111                 break;
 112             case "sparcv9":
 113                 arch = "sparc";
 114                 break;
 115         }
 116         return arch;
 117     }
 118 
 119     protected final Integer intRequiredOnAMD64 = osArch.equals("amd64") ? null : 0;
 120     protected final Long longRequiredOnAMD64 = osArch.equals("amd64") ? null : 0L;
 121 }