Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotGraalRuntime.java @ 15291:471e28b8f03b
Move UnsafeAccess to graal.compiler.common.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Tue, 22 Apr 2014 15:24:14 +0200 |
parents | d90e5c22ba55 |
children | 09d721bcffe2 |
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/* * Copyright (c) 2011, 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.hotspot; import static com.oracle.graal.compiler.common.GraalOptions.*; import static com.oracle.graal.compiler.common.UnsafeAccess.*; import static com.oracle.graal.hotspot.HotSpotGraalRuntime.Options.*; import java.lang.reflect.*; import java.util.*; import sun.misc.*; import sun.reflect.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.code.stack.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.api.runtime.*; import com.oracle.graal.compiler.common.*; import com.oracle.graal.compiler.target.*; import com.oracle.graal.hotspot.bridge.*; import com.oracle.graal.hotspot.logging.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.options.*; import com.oracle.graal.runtime.*; //JaCoCo Exclude /** * Singleton class holding the instance of the {@link GraalRuntime}. */ public final class HotSpotGraalRuntime implements GraalRuntime, RuntimeProvider, StackIntrospection { private static final HotSpotGraalRuntime instance = new HotSpotGraalRuntime(); static { instance.completeInitialization(); } /** * Gets the singleton {@link HotSpotGraalRuntime} object. */ @CallerSensitive public static HotSpotGraalRuntime runtime() { SecurityManager sm = System.getSecurityManager(); if (sm != null) { Class<?> cc = Reflection.getCallerClass(); if (cc != null && cc.getClassLoader() != null) { sm.checkPermission(Graal.ACCESS_PERMISSION); } } assert instance != null; return instance; } static { Reflection.registerFieldsToFilter(HotSpotGraalRuntime.class, "instance"); } /** * Do deferred initialization. */ public void completeInitialization() { // Proxies for the VM/Compiler interfaces cannot be initialized // in the constructor as proxy creation causes static // initializers to be executed for all the types involved in the // proxied methods. Some of these static initializers (e.g. in // HotSpotMethodData) rely on the static 'instance' field being set // to retrieve configuration details. VMToCompiler toCompiler = this.vmToCompiler; CompilerToVM toVM = this.compilerToVm; if (CountingProxy.ENABLED) { toCompiler = CountingProxy.getProxy(VMToCompiler.class, toCompiler); toVM = CountingProxy.getProxy(CompilerToVM.class, toVM); } if (Logger.ENABLED) { toCompiler = LoggingProxy.getProxy(VMToCompiler.class, toCompiler); toVM = LoggingProxy.getProxy(CompilerToVM.class, toVM); } this.vmToCompiler = toCompiler; this.compilerToVm = toVM; } // Options must not be directly declared in HotSpotGraalRuntime - see VerifyOptionsPhase static class Options { // @formatter:off @Option(help = "The runtime configuration to use") static final OptionValue<String> GraalRuntime = new OptionValue<>(""); // @formatter:on } private static HotSpotBackendFactory findFactory(String architecture) { HotSpotBackendFactory basic = null; HotSpotBackendFactory selected = null; HotSpotBackendFactory nonBasic = null; int nonBasicCount = 0; for (HotSpotBackendFactory factory : ServiceLoader.loadInstalled(HotSpotBackendFactory.class)) { if (factory.getArchitecture().equalsIgnoreCase(architecture)) { if (factory.getGraalRuntimeName().equals(GraalRuntime.getValue())) { assert selected == null || checkFactoryOverriding(selected, factory); selected = factory; } if (factory.getGraalRuntimeName().equals("basic")) { assert basic == null || checkFactoryOverriding(basic, factory); basic = factory; } else { nonBasic = factory; nonBasicCount++; } } } if (selected != null) { return selected; } else { if (!GraalRuntime.getValue().equals("")) { // Fail fast if a non-default value for GraalRuntime was specified // and the corresponding factory is not available throw new GraalInternalError("Specified runtime \"%s\" not available for the %s architecture", GraalRuntime.getValue(), architecture); } else if (nonBasicCount == 1) { // If there is exactly one non-basic runtime, select this one. return nonBasic; } else { return basic; } } } /** * Checks that a factory overriding is valid. A factory B can only override/replace a factory A * if the B.getClass() is a subclass of A.getClass(). This models the assumption that B is * extends the behavior of A and has therefore understood the behavior expected of A. * * @param baseFactory * @param overridingFactory */ private static boolean checkFactoryOverriding(HotSpotBackendFactory baseFactory, HotSpotBackendFactory overridingFactory) { return baseFactory.getClass().isAssignableFrom(overridingFactory.getClass()); } /** * Gets the kind of a word value on the {@linkplain #getHostBackend() host} backend. */ public static Kind getHostWordKind() { return instance.getHostBackend().getTarget().wordKind; } /** * Reads a word value from a given address. */ public static long unsafeReadWord(long address) { return unsafe.getAddress(address); } /** * Reads a klass pointer from a constant object. */ public static long unsafeReadKlassPointer(Object object) { return instance.getCompilerToVM().readUnsafeKlassPointer(object); } /** * Reads a word value from a given object. */ public static long unsafeReadWord(Object object, long offset) { if (getHostWordKind() == Kind.Long) { return unsafe.getLong(object, offset); } return unsafe.getInt(object, offset) & 0xFFFFFFFFL; } protected/* final */CompilerToVM compilerToVm; protected/* final */VMToCompiler vmToCompiler; protected final HotSpotVMConfig config; private final HotSpotBackend hostBackend; /** * Graal mirrors are stored as a {@link ClassValue} associated with the {@link Class} of the * type. This data structure stores both {@link HotSpotResolvedObjectType} and * {@link HotSpotResolvedPrimitiveType} types. */ private final ClassValue<ResolvedJavaType> graalMirrors = new ClassValue<ResolvedJavaType>() { @Override protected ResolvedJavaType computeValue(Class<?> javaClass) { if (javaClass.isPrimitive()) { Kind kind = Kind.fromJavaClass(javaClass); return new HotSpotResolvedPrimitiveType(kind); } else { return new HotSpotResolvedObjectType(javaClass); } } }; private final Map<Class<? extends Architecture>, HotSpotBackend> backends = new HashMap<>(); private HotSpotGraalRuntime() { CompilerToVM toVM = new CompilerToVMImpl(); VMToCompiler toCompiler = new VMToCompilerImpl(this); compilerToVm = toVM; vmToCompiler = toCompiler; config = new HotSpotVMConfig(compilerToVm); CompileTheWorld.Options.overrideWithNativeOptions(config); // Only set HotSpotPrintCompilation and HotSpotPrintInlining if they still have their // default value (false). if (HotSpotPrintCompilation.getValue() == false) { HotSpotPrintCompilation.setValue(config.printCompilation); } if (HotSpotPrintInlining.getValue() == false) { HotSpotPrintInlining.setValue(config.printInlining); } if (HotSpotCIPrintCompilerName.getValue() == false) { HotSpotCIPrintCompilerName.setValue(config.printCompilerName); } if (Boolean.valueOf(System.getProperty("graal.printconfig"))) { printConfig(config); } String hostArchitecture = config.getHostArchitectureName(); hostBackend = registerBackend(findFactory(hostArchitecture).createBackend(this, null)); String[] gpuArchitectures = getGPUArchitectureNames(compilerToVm); for (String arch : gpuArchitectures) { HotSpotBackendFactory factory = findFactory(arch); if (factory == null) { throw new GraalInternalError("No backend available for specified GPU architecture \"%s\"", arch); } registerBackend(factory.createBackend(this, hostBackend)); } } private HotSpotBackend registerBackend(HotSpotBackend backend) { Class<? extends Architecture> arch = backend.getTarget().arch.getClass(); HotSpotBackend oldValue = backends.put(arch, backend); assert oldValue == null : "cannot overwrite existing backend for architecture " + arch.getSimpleName(); return backend; } /** * Gets the Graal mirror for a {@link Class} object. * * @return the {@link HotSpotResolvedJavaType} corresponding to {@code javaClass} */ public ResolvedJavaType fromClass(Class<?> javaClass) { return graalMirrors.get(javaClass); } /** * Gets the names of the supported GPU architectures for the purpose of finding the * corresponding {@linkplain HotSpotBackendFactory backend} objects. */ private static String[] getGPUArchitectureNames(CompilerToVM c2vm) { String gpuList = c2vm.getGPUs(); if (!gpuList.isEmpty()) { String[] gpus = gpuList.split(","); return gpus; } return new String[0]; } private static void printConfig(HotSpotVMConfig config) { Field[] fields = config.getClass().getDeclaredFields(); Map<String, Field> sortedFields = new TreeMap<>(); for (Field f : fields) { f.setAccessible(true); sortedFields.put(f.getName(), f); } for (Field f : sortedFields.values()) { try { Logger.info(String.format("%9s %-40s = %s", f.getType().getSimpleName(), f.getName(), Logger.pretty(f.get(config)))); } catch (Exception e) { } } } public HotSpotVMConfig getConfig() { return config; } public TargetDescription getTarget() { return hostBackend.getTarget(); } public CompilerToVM getCompilerToVM() { return compilerToVm; } public VMToCompiler getVMToCompiler() { return vmToCompiler; } /** * Converts a name to a Java type. * * @param name a well formed Java type in {@linkplain JavaType#getName() internal} format * @param accessingType the context of resolution (may be null) * @param resolve force resolution to a {@link ResolvedJavaType}. If true, this method will * either return a {@link ResolvedJavaType} or throw an exception * @return a Java type for {@code name} which is guaranteed to be of type * {@link ResolvedJavaType} if {@code resolve == true} * @throws LinkageError if {@code resolve == true} and the resolution failed */ public JavaType lookupType(String name, HotSpotResolvedObjectType accessingType, boolean resolve) { // If the name represents a primitive type we can short-circuit the lookup. if (name.length() == 1) { Kind kind = Kind.fromPrimitiveOrVoidTypeChar(name.charAt(0)); return HotSpotResolvedPrimitiveType.fromKind(kind); } // Handle non-primitive types. Class<?> accessingClass = null; if (accessingType != null) { accessingClass = accessingType.mirror(); } // Resolve the type in the VM. final long metaspaceKlass = compilerToVm.lookupType(name, accessingClass, resolve); if (metaspaceKlass == 0) { return HotSpotUnresolvedJavaType.create(name); } return HotSpotResolvedObjectType.fromMetaspaceKlass(metaspaceKlass); } public HotSpotProviders getHostProviders() { return getHostBackend().getProviders(); } @Override public String getName() { return getClass().getSimpleName(); } @SuppressWarnings("unchecked") @Override public <T> T getCapability(Class<T> clazz) { if (clazz == RuntimeProvider.class) { return (T) this; } else if (clazz == StackIntrospection.class) { return (T) this; } else if (clazz == SnippetReflectionProvider.class) { return (T) getHostProviders().getSnippetReflection(); } return null; } public HotSpotBackend getHostBackend() { return hostBackend; } public <T extends Architecture> Backend getBackend(Class<T> arch) { assert arch != Architecture.class; return backends.get(arch); } public Map<Class<? extends Architecture>, HotSpotBackend> getBackends() { return Collections.unmodifiableMap(backends); } /** * The offset from the origin of an array to the first element. * * @return the offset in bytes */ public static int getArrayBaseOffset(Kind kind) { switch (kind) { case Boolean: return Unsafe.ARRAY_BOOLEAN_BASE_OFFSET; case Byte: return Unsafe.ARRAY_BYTE_BASE_OFFSET; case Char: return Unsafe.ARRAY_CHAR_BASE_OFFSET; case Short: return Unsafe.ARRAY_SHORT_BASE_OFFSET; case Int: return Unsafe.ARRAY_INT_BASE_OFFSET; case Long: return Unsafe.ARRAY_LONG_BASE_OFFSET; case Float: return Unsafe.ARRAY_FLOAT_BASE_OFFSET; case Double: return Unsafe.ARRAY_DOUBLE_BASE_OFFSET; case Object: return Unsafe.ARRAY_OBJECT_BASE_OFFSET; default: throw GraalInternalError.shouldNotReachHere(); } } /** * The scale used for the index when accessing elements of an array of this kind. * * @return the scale in order to convert the index into a byte offset */ public static int getArrayIndexScale(Kind kind) { switch (kind) { case Boolean: return Unsafe.ARRAY_BOOLEAN_INDEX_SCALE; case Byte: return Unsafe.ARRAY_BYTE_INDEX_SCALE; case Char: return Unsafe.ARRAY_CHAR_INDEX_SCALE; case Short: return Unsafe.ARRAY_SHORT_INDEX_SCALE; case Int: return Unsafe.ARRAY_INT_INDEX_SCALE; case Long: return Unsafe.ARRAY_LONG_INDEX_SCALE; case Float: return Unsafe.ARRAY_FLOAT_INDEX_SCALE; case Double: return Unsafe.ARRAY_DOUBLE_INDEX_SCALE; case Object: return Unsafe.ARRAY_OBJECT_INDEX_SCALE; default: throw GraalInternalError.shouldNotReachHere(); } } public Iterable<InspectedFrame> getStackTrace(ResolvedJavaMethod[] initialMethods, ResolvedJavaMethod[] matchingMethods, int initialSkip) { final long[] initialMetaMethods = toMeta(initialMethods); final long[] matchingMetaMethods = toMeta(matchingMethods); class StackFrameIterator implements Iterator<InspectedFrame> { private HotSpotStackFrameReference current = compilerToVm.getNextStackFrame(null, initialMetaMethods, initialSkip); // we don't want to read ahead if hasNext isn't called private boolean advanced = true; public boolean hasNext() { update(); return current != null; } public InspectedFrame next() { update(); advanced = false; return current; } private void update() { if (!advanced) { current = compilerToVm.getNextStackFrame(current, matchingMetaMethods, 0); advanced = true; } } } return new Iterable<InspectedFrame>() { public Iterator<InspectedFrame> iterator() { return new StackFrameIterator(); } }; } private static long[] toMeta(ResolvedJavaMethod[] methods) { if (methods == null) { return null; } else { long[] result = new long[methods.length]; for (int i = 0; i < result.length; i++) { result[i] = ((HotSpotResolvedJavaMethod) methods[i]).getMetaspaceMethod(); } return result; } } }