Mercurial > hg > graal-jvmci-8
view jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotJVMCIRuntimeProvider.java @ 22760:4cf1946f59fc
must not fold accesses to @Stable fields if -XX:-FoldStableValues (GRAAL-58)
author | Doug Simon <doug.simon@oracle.com> |
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date | Sat, 26 Dec 2015 15:00:55 +0100 |
parents | 57646377e480 |
children | a920338dd4d4 |
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/* * Copyright (c) 2015, 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 jdk.vm.ci.hotspot; import java.io.OutputStream; import jdk.vm.ci.common.JVMCIError; import jdk.vm.ci.meta.JVMCIMetaAccessContext; import jdk.vm.ci.meta.JavaKind; import jdk.vm.ci.meta.JavaType; import jdk.vm.ci.meta.ResolvedJavaType; import jdk.vm.ci.runtime.JVMCIRuntime; import sun.misc.Unsafe; //JaCoCo Exclude /** * Configuration information for the HotSpot JVMCI runtime. */ public interface HotSpotJVMCIRuntimeProvider extends JVMCIRuntime { HotSpotVMConfig getConfig(); CompilerToVM getCompilerToVM(); /** * Gets an output stream that writes to the HotSpot's {@code tty} stream. */ OutputStream getLogStream(); /** * Converts a name to a Java type. This method attempts to resolve {@code name} to a * {@link ResolvedJavaType}. * * @param name a well formed Java type in {@linkplain JavaType#getName() internal} format * @param accessingType the context of resolution which must be non-null * @param resolve specifies whether resolution failure results in an unresolved type being * return or a {@link LinkageError} being thrown * @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 * @throws NullPointerException if {@code accessingClass} is {@code null} */ JavaType lookupType(String name, HotSpotResolvedObjectType accessingType, boolean resolve); /** * Gets the JVMCI mirror for a {@link Class} object. * * @return the {@link ResolvedJavaType} corresponding to {@code javaClass} */ ResolvedJavaType fromClass(Class<?> clazz); JVMCIMetaAccessContext getMetaAccessContext(); /** * The offset from the origin of an array to the first element. * * @return the offset in bytes */ static int getArrayBaseOffset(JavaKind 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 new JVMCIError("%s", kind); } } /** * 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 */ static int getArrayIndexScale(JavaKind 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 new JVMCIError("%s", kind); } } }