author | zmajo |
Wed, 15 Jun 2016 14:27:58 +0200 | |
changeset 39421 | a9652c919db8 |
parent 38695 | 08b834856583 |
child 39423 | 0f8dc3693499 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package jdk.vm.ci.hotspot; |
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import static jdk.vm.ci.common.InitTimer.timer; |
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import static jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.runtime; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.Method; |
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import jdk.vm.ci.code.BytecodeFrame; |
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import jdk.vm.ci.code.InstalledCode; |
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import jdk.vm.ci.code.InvalidInstalledCodeException; |
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import jdk.vm.ci.code.TargetDescription; |
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import jdk.vm.ci.common.InitTimer; |
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import jdk.vm.ci.common.JVMCIError; |
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import jdk.vm.ci.hotspotvmconfig.HotSpotVMField; |
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import jdk.vm.ci.meta.JavaType; |
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import jdk.vm.ci.meta.ResolvedJavaMethod; |
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import jdk.vm.ci.meta.ResolvedJavaType; |
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import jdk.internal.misc.Unsafe; |
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/** |
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* Calls from Java into HotSpot. The behavior of all the methods in this class that take a native |
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* pointer as an argument (e.g., {@link #getSymbol(long)}) is undefined if the argument does not |
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* denote a valid native object. |
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*/ |
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final class CompilerToVM { |
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/** |
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* Initializes the native part of the JVMCI runtime. |
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*/ |
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private static native void registerNatives(); |
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static { |
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initialize(); |
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} |
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@SuppressWarnings("try") |
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private static void initialize() { |
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try (InitTimer t = timer("CompilerToVM.registerNatives")) { |
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registerNatives(); |
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} |
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} |
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/** |
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* Gets the {@link CompilerToVM} instance associated with the singleton |
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* {@link HotSpotJVMCIRuntime} instance. |
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*/ |
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public static CompilerToVM compilerToVM() { |
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return runtime().getCompilerToVM(); |
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} |
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/** |
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* Copies the original bytecode of {@code method} into a new byte array and returns it. |
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* |
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* @return a new byte array containing the original bytecode of {@code method} |
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*/ |
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native byte[] getBytecode(HotSpotResolvedJavaMethodImpl method); |
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/** |
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* Gets the number of entries in {@code method}'s exception handler table or 0 if it has no |
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* exception handler table. |
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*/ |
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native int getExceptionTableLength(HotSpotResolvedJavaMethodImpl method); |
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/** |
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* Gets the address of the first entry in {@code method}'s exception handler table. |
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* |
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* Each entry is a native object described by these fields: |
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* |
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* <ul> |
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* <li>{@link HotSpotVMConfig#exceptionTableElementSize}</li> |
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* <li>{@link HotSpotVMConfig#exceptionTableElementStartPcOffset}</li> |
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* <li>{@link HotSpotVMConfig#exceptionTableElementEndPcOffset}</li> |
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* <li>{@link HotSpotVMConfig#exceptionTableElementHandlerPcOffset}</li> |
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* <li>{@link HotSpotVMConfig#exceptionTableElementCatchTypeIndexOffset} |
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* </ul> |
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* |
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* @return 0 if {@code method} has no exception handlers (i.e. |
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* {@code getExceptionTableLength(method) == 0}) |
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*/ |
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native long getExceptionTableStart(HotSpotResolvedJavaMethodImpl method); |
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||
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/** |
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* Determines if {@code method} can be inlined. A method may not be inlinable for a number of |
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* reasons such as: |
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* <ul> |
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* <li>a CompileOracle directive may prevent inlining or compilation of methods</li> |
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* <li>the method may have a bytecode breakpoint set</li> |
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* <li>the method may have other bytecode features that require special handling by the VM</li> |
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* </ul> |
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*/ |
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native boolean canInlineMethod(HotSpotResolvedJavaMethodImpl method); |
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/** |
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* Determines if {@code method} should be inlined at any cost. This could be because: |
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* <ul> |
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* <li>a CompileOracle directive may forces inlining of this methods</li> |
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* <li>an annotation forces inlining of this method</li> |
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* </ul> |
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*/ |
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native boolean shouldInlineMethod(HotSpotResolvedJavaMethodImpl method); |
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/** |
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* Used to implement {@link ResolvedJavaType#findUniqueConcreteMethod(ResolvedJavaMethod)}. |
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* |
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* @param method the method on which to base the search |
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* @param actualHolderType the best known type of receiver |
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* @return the method result or 0 is there is no unique concrete method for {@code method} |
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*/ |
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native HotSpotResolvedJavaMethodImpl findUniqueConcreteMethod(HotSpotResolvedObjectTypeImpl actualHolderType, HotSpotResolvedJavaMethodImpl method); |
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/** |
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* Gets the implementor for the interface class {@code type}. |
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* |
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* @return the implementor if there is a single implementor, 0 if there is no implementor, or |
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* {@code type} itself if there is more than one implementor |
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*/ |
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native HotSpotResolvedObjectTypeImpl getImplementor(HotSpotResolvedObjectTypeImpl type); |
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/** |
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* Determines if {@code method} is ignored by security stack walks. |
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*/ |
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native boolean methodIsIgnoredBySecurityStackWalk(HotSpotResolvedJavaMethodImpl method); |
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/** |
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* Converts a name to a type. |
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* |
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* @param name a well formed Java type in {@linkplain JavaType#getName() internal} format |
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* @param accessingClass the context of resolution (must not be null) |
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* @param resolve force resolution to a {@link ResolvedJavaType}. If true, this method will |
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* either return a {@link ResolvedJavaType} or throw an exception |
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* @return the type for {@code name} or 0 if resolution failed and {@code resolve == false} |
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* @throws LinkageError if {@code resolve == true} and the resolution failed |
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*/ |
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native HotSpotResolvedObjectTypeImpl lookupType(String name, Class<?> accessingClass, boolean resolve); |
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/** |
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* Resolves the entry at index {@code cpi} in {@code constantPool} to an object. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote one of the following |
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* entry types: {@code JVM_CONSTANT_MethodHandle}, {@code JVM_CONSTANT_MethodHandleInError}, |
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* {@code JVM_CONSTANT_MethodType} and {@code JVM_CONSTANT_MethodTypeInError}. |
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*/ |
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native Object resolveConstantInPool(HotSpotConstantPool constantPool, int cpi); |
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/** |
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* Resolves the entry at index {@code cpi} in {@code constantPool} to an object, looking in the |
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* constant pool cache first. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote a |
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* {@code JVM_CONSTANT_String} entry. |
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*/ |
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native Object resolvePossiblyCachedConstantInPool(HotSpotConstantPool constantPool, int cpi); |
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/** |
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* Gets the {@code JVM_CONSTANT_NameAndType} index from the entry at index {@code cpi} in |
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* {@code constantPool}. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote an entry containing a |
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* {@code JVM_CONSTANT_NameAndType} index. |
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*/ |
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native int lookupNameAndTypeRefIndexInPool(HotSpotConstantPool constantPool, int cpi); |
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/** |
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* Gets the name of the {@code JVM_CONSTANT_NameAndType} entry referenced by another entry |
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* denoted by {@code which} in {@code constantPool}. |
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* |
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* The behavior of this method is undefined if {@code which} does not denote a entry that |
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* references a {@code JVM_CONSTANT_NameAndType} entry. |
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*/ |
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native String lookupNameInPool(HotSpotConstantPool constantPool, int which); |
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/** |
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* Gets the signature of the {@code JVM_CONSTANT_NameAndType} entry referenced by another entry |
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* denoted by {@code which} in {@code constantPool}. |
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* |
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* The behavior of this method is undefined if {@code which} does not denote a entry that |
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* references a {@code JVM_CONSTANT_NameAndType} entry. |
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*/ |
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native String lookupSignatureInPool(HotSpotConstantPool constantPool, int which); |
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/** |
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* Gets the {@code JVM_CONSTANT_Class} index from the entry at index {@code cpi} in |
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* {@code constantPool}. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote an entry containing a |
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* {@code JVM_CONSTANT_Class} index. |
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*/ |
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native int lookupKlassRefIndexInPool(HotSpotConstantPool constantPool, int cpi); |
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/** |
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* Looks up a class denoted by the {@code JVM_CONSTANT_Class} entry at index {@code cpi} in |
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* {@code constantPool}. This method does not perform any resolution. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote a |
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* {@code JVM_CONSTANT_Class} entry. |
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* |
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* @return the resolved class entry or a String otherwise |
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*/ |
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native Object lookupKlassInPool(HotSpotConstantPool constantPool, int cpi); |
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/** |
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* Looks up a method denoted by the entry at index {@code cpi} in {@code constantPool}. This |
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* method does not perform any resolution. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote an entry representing |
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* a method. |
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* |
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* @param opcode the opcode of the instruction for which the lookup is being performed or |
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* {@code -1}. If non-negative, then resolution checks specific to the bytecode it |
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* denotes are performed if the method is already resolved. Should any of these |
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* checks fail, 0 is returned. |
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* @return the resolved method entry, 0 otherwise |
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*/ |
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native HotSpotResolvedJavaMethodImpl lookupMethodInPool(HotSpotConstantPool constantPool, int cpi, byte opcode); |
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/** |
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* Ensures that the type referenced by the specified {@code JVM_CONSTANT_InvokeDynamic} entry at |
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* index {@code cpi} in {@code constantPool} is loaded and initialized. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote a |
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* {@code JVM_CONSTANT_InvokeDynamic} entry. |
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*/ |
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native void resolveInvokeDynamicInPool(HotSpotConstantPool constantPool, int cpi); |
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/** |
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* Ensures that the type referenced by the entry for a |
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* <a href="https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-2.html#jvms-2.9">signature |
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* polymorphic</a> method at index {@code cpi} in {@code constantPool} is loaded and |
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* initialized. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote an entry representing |
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* a signature polymorphic method. |
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*/ |
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native void resolveInvokeHandleInPool(HotSpotConstantPool constantPool, int cpi); |
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/** |
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* Gets the resolved type denoted by the entry at index {@code cpi} in {@code constantPool}. |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote an entry representing |
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* a class. |
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* |
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* @throws LinkageError if resolution failed |
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*/ |
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native HotSpotResolvedObjectTypeImpl resolveTypeInPool(HotSpotConstantPool constantPool, int cpi) throws LinkageError; |
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/** |
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* Looks up and attempts to resolve the {@code JVM_CONSTANT_Field} entry for at index {@code cpi} in |
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* {@code constantPool}. For some opcodes, checks are performed that require the {@code method} |
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* that contains {@code opcode} to be specified. The values returned in {@code info} are: |
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* |
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* <pre> |
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* [(int) flags, // only valid if field is resolved |
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* (int) offset] // only valid if field is resolved |
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* </pre> |
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* |
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* The behavior of this method is undefined if {@code cpi} does not denote a |
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* {@code JVM_CONSTANT_Field} entry. |
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* |
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* @param info an array in which the details of the field are returned |
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* @return the type defining the field if resolution is successful, 0 otherwise |
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*/ |
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native HotSpotResolvedObjectTypeImpl resolveFieldInPool(HotSpotConstantPool constantPool, int cpi, HotSpotResolvedJavaMethodImpl method, byte opcode, long[] info); |
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/** |
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* Converts {@code cpci} from an index into the cache for {@code constantPool} to an index |
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* directly into {@code constantPool}. |
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* |
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* The behavior of this method is undefined if {@code ccpi} is an invalid constant pool cache |
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* index. |
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*/ |
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native int constantPoolRemapInstructionOperandFromCache(HotSpotConstantPool constantPool, int cpci); |
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/** |
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* Gets the appendix object (if any) associated with the entry at index {@code cpi} in |
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* {@code constantPool}. |
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*/ |
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native Object lookupAppendixInPool(HotSpotConstantPool constantPool, int cpi); |
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/** |
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* Installs the result of a compilation into the code cache. |
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* |
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* @param target the target where this code should be installed |
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* @param compiledCode the result of a compilation |
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* @param code the details of the installed CodeBlob are written to this object |
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* @return the outcome of the installation which will be one of |
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* {@link HotSpotVMConfig#codeInstallResultOk}, |
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* {@link HotSpotVMConfig#codeInstallResultCacheFull}, |
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* {@link HotSpotVMConfig#codeInstallResultCodeTooLarge}, |
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* {@link HotSpotVMConfig#codeInstallResultDependenciesFailed} or |
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* {@link HotSpotVMConfig#codeInstallResultDependenciesInvalid}. |
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* @throws JVMCIError if there is something wrong with the compiled code or the associated |
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* metadata. |
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*/ |
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native int installCode(TargetDescription target, HotSpotCompiledCode compiledCode, InstalledCode code, HotSpotSpeculationLog speculationLog); |
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|
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/** |
320 |
* Generates the VM metadata for some compiled code and copies them into {@code metaData}. This |
|
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* method does not install anything into the code cache. |
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* |
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* @param target the target where this code would be installed |
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* @param compiledCode the result of a compilation |
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325 |
* @param metaData the metadata is written to this object |
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326 |
* @return the outcome of the installation which will be one of |
|
327 |
* {@link HotSpotVMConfig#codeInstallResultOk}, |
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328 |
* {@link HotSpotVMConfig#codeInstallResultCacheFull}, |
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329 |
* {@link HotSpotVMConfig#codeInstallResultCodeTooLarge}, |
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* {@link HotSpotVMConfig#codeInstallResultDependenciesFailed} or |
|
331 |
* {@link HotSpotVMConfig#codeInstallResultDependenciesInvalid}. |
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332 |
* @throws JVMCIError if there is something wrong with the compiled code or the metadata |
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*/ |
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public native int getMetadata(TargetDescription target, HotSpotCompiledCode compiledCode, HotSpotMetaData metaData); |
335 |
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336 |
/** |
|
337 |
* Resets all compilation statistics. |
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338 |
*/ |
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native void resetCompilationStatistics(); |
33160 | 340 |
|
341 |
/** |
|
342 |
* Initializes the fields of {@code config}. |
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*/ |
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native long initializeConfiguration(HotSpotVMConfig config); |
33160 | 345 |
|
346 |
/** |
|
347 |
* Resolves the implementation of {@code method} for virtual dispatches on objects of dynamic |
|
348 |
* type {@code exactReceiver}. This resolution process only searches "up" the class hierarchy of |
|
349 |
* {@code exactReceiver}. |
|
350 |
* |
|
351 |
* @param caller the caller or context type used to perform access checks |
|
352 |
* @return the link-time resolved method (might be abstract) or {@code 0} if it can not be |
|
353 |
* linked |
|
354 |
*/ |
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355 |
native HotSpotResolvedJavaMethodImpl resolveMethod(HotSpotResolvedObjectTypeImpl exactReceiver, HotSpotResolvedJavaMethodImpl method, HotSpotResolvedObjectTypeImpl caller); |
|
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||
357 |
/** |
|
358 |
* Gets the static initializer of {@code type}. |
|
359 |
* |
|
360 |
* @return 0 if {@code type} has no static initializer |
|
361 |
*/ |
|
362 |
native HotSpotResolvedJavaMethodImpl getClassInitializer(HotSpotResolvedObjectTypeImpl type); |
|
363 |
||
364 |
/** |
|
365 |
* Determines if {@code type} or any of its currently loaded subclasses overrides |
|
366 |
* {@code Object.finalize()}. |
|
367 |
*/ |
|
368 |
native boolean hasFinalizableSubclass(HotSpotResolvedObjectTypeImpl type); |
|
369 |
||
370 |
/** |
|
371 |
* Gets the method corresponding to {@code holder} and slot number {@code slot} (i.e. |
|
372 |
* {@link Method#slot} or {@link Constructor#slot}). |
|
373 |
*/ |
|
374 |
native HotSpotResolvedJavaMethodImpl getResolvedJavaMethodAtSlot(Class<?> holder, int slot); |
|
375 |
||
376 |
/** |
|
377 |
* Gets the maximum absolute offset of a PC relative call to {@code address} from any position |
|
378 |
* in the code cache. |
|
379 |
* |
|
380 |
* @param address an address that may be called from any code in the code cache |
|
381 |
* @return -1 if {@code address == 0} |
|
382 |
*/ |
|
33632 | 383 |
native long getMaxCallTargetOffset(long address); |
33160 | 384 |
|
385 |
/** |
|
386 |
* Gets a textual disassembly of {@code codeBlob}. |
|
387 |
* |
|
388 |
* @return a non-zero length string containing a disassembly of {@code codeBlob} or null if |
|
389 |
* {@code codeBlob} could not be disassembled for some reason |
|
390 |
*/ |
|
391 |
// The HotSpot disassembler seems not to be thread safe so it's better to synchronize its usage |
|
33632 | 392 |
synchronized native String disassembleCodeBlob(InstalledCode installedCode); |
33160 | 393 |
|
394 |
/** |
|
395 |
* Gets a stack trace element for {@code method} at bytecode index {@code bci}. |
|
396 |
*/ |
|
397 |
native StackTraceElement getStackTraceElement(HotSpotResolvedJavaMethodImpl method, int bci); |
|
398 |
||
399 |
/** |
|
400 |
* Executes some {@code installedCode} with arguments {@code args}. |
|
401 |
* |
|
402 |
* @return the result of executing {@code installedCode} |
|
403 |
* @throws InvalidInstalledCodeException if {@code installedCode} has been invalidated |
|
404 |
*/ |
|
405 |
native Object executeInstalledCode(Object[] args, InstalledCode installedCode) throws InvalidInstalledCodeException; |
|
406 |
||
407 |
/** |
|
408 |
* Gets the line number table for {@code method}. The line number table is encoded as (bci, |
|
409 |
* source line number) pairs. |
|
410 |
* |
|
411 |
* @return the line number table for {@code method} or null if it doesn't have one |
|
412 |
*/ |
|
413 |
native long[] getLineNumberTable(HotSpotResolvedJavaMethodImpl method); |
|
414 |
||
415 |
/** |
|
416 |
* Gets the number of entries in the local variable table for {@code method}. |
|
417 |
* |
|
418 |
* @return the number of entries in the local variable table for {@code method} |
|
419 |
*/ |
|
420 |
native int getLocalVariableTableLength(HotSpotResolvedJavaMethodImpl method); |
|
421 |
||
422 |
/** |
|
423 |
* Gets the address of the first entry in the local variable table for {@code method}. |
|
424 |
* |
|
425 |
* Each entry is a native object described by these fields: |
|
426 |
* |
|
427 |
* <ul> |
|
428 |
* <li>{@link HotSpotVMConfig#localVariableTableElementSize}</li> |
|
429 |
* <li>{@link HotSpotVMConfig#localVariableTableElementLengthOffset}</li> |
|
430 |
* <li>{@link HotSpotVMConfig#localVariableTableElementNameCpIndexOffset}</li> |
|
431 |
* <li>{@link HotSpotVMConfig#localVariableTableElementDescriptorCpIndexOffset}</li> |
|
432 |
* <li>{@link HotSpotVMConfig#localVariableTableElementSignatureCpIndexOffset} |
|
433 |
* <li>{@link HotSpotVMConfig#localVariableTableElementSlotOffset} |
|
434 |
* <li>{@link HotSpotVMConfig#localVariableTableElementStartBciOffset} |
|
435 |
* </ul> |
|
436 |
* |
|
437 |
* @return 0 if {@code method} does not have a local variable table |
|
438 |
*/ |
|
439 |
native long getLocalVariableTableStart(HotSpotResolvedJavaMethodImpl method); |
|
440 |
||
441 |
/** |
|
442 |
* Determines if {@code method} should not be inlined or compiled. |
|
443 |
*/ |
|
444 |
native void doNotInlineOrCompile(HotSpotResolvedJavaMethodImpl method); |
|
445 |
||
446 |
/** |
|
447 |
* Invalidates the profiling information for {@code method} and (re)initializes it such that |
|
448 |
* profiling restarts upon its next invocation. |
|
449 |
*/ |
|
450 |
native void reprofile(HotSpotResolvedJavaMethodImpl method); |
|
451 |
||
452 |
/** |
|
453 |
* Invalidates {@code installedCode} such that {@link InvalidInstalledCodeException} will be |
|
454 |
* raised the next time {@code installedCode} is executed. |
|
455 |
*/ |
|
33632 | 456 |
native void invalidateInstalledCode(InstalledCode installedCode); |
33160 | 457 |
|
458 |
/** |
|
459 |
* Collects the current values of all JVMCI benchmark counters, summed up over all threads. |
|
460 |
*/ |
|
33632 | 461 |
native long[] collectCounters(); |
33160 | 462 |
|
463 |
/** |
|
464 |
* Determines if {@code metaspaceMethodData} is mature. |
|
465 |
*/ |
|
466 |
native boolean isMature(long metaspaceMethodData); |
|
467 |
||
468 |
/** |
|
469 |
* Generate a unique id to identify the result of the compile. |
|
470 |
*/ |
|
471 |
native int allocateCompileId(HotSpotResolvedJavaMethodImpl method, int entryBCI); |
|
472 |
||
473 |
/** |
|
474 |
* Determines if {@code method} has OSR compiled code identified by {@code entryBCI} for |
|
475 |
* compilation level {@code level}. |
|
476 |
*/ |
|
477 |
native boolean hasCompiledCodeForOSR(HotSpotResolvedJavaMethodImpl method, int entryBCI, int level); |
|
478 |
||
479 |
/** |
|
480 |
* Gets the value of {@code metaspaceSymbol} as a String. |
|
481 |
*/ |
|
482 |
native String getSymbol(long metaspaceSymbol); |
|
483 |
||
484 |
/** |
|
485 |
* Looks for the next Java stack frame matching an entry in {@code methods}. |
|
486 |
* |
|
487 |
* @param frame the starting point of the search, where {@code null} refers to the topmost frame |
|
488 |
* @param methods the methods to look for, where {@code null} means that any frame is returned |
|
489 |
* @return the frame, or {@code null} if the end of the stack was reached during the search |
|
490 |
*/ |
|
33632 | 491 |
native HotSpotStackFrameReference getNextStackFrame(HotSpotStackFrameReference frame, ResolvedJavaMethod[] methods, int initialSkip); |
33160 | 492 |
|
493 |
/** |
|
38695 | 494 |
* Materializes all virtual objects within {@code stackFrame} and updates its locals. |
33160 | 495 |
* |
496 |
* @param invalidate if {@code true}, the compiled method for the stack frame will be |
|
38695 | 497 |
* invalidated |
33160 | 498 |
*/ |
499 |
native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate); |
|
500 |
||
501 |
/** |
|
502 |
* Gets the v-table index for interface method {@code method} in the receiver {@code type} or |
|
503 |
* {@link HotSpotVMConfig#invalidVtableIndex} if {@code method} is not in {@code type}'s |
|
504 |
* v-table. |
|
505 |
* |
|
506 |
* @throws InternalError if {@code type} is an interface or {@code method} is not held by an |
|
507 |
* interface or class represented by {@code type} is not initialized |
|
508 |
*/ |
|
509 |
native int getVtableIndexForInterfaceMethod(HotSpotResolvedObjectTypeImpl type, HotSpotResolvedJavaMethodImpl method); |
|
510 |
||
511 |
/** |
|
512 |
* Determines if debug info should also be emitted at non-safepoint locations. |
|
513 |
*/ |
|
33632 | 514 |
native boolean shouldDebugNonSafepoints(); |
33160 | 515 |
|
516 |
/** |
|
517 |
* Writes {@code length} bytes from {@code bytes} starting at offset {@code offset} to the |
|
518 |
* HotSpot's log stream. |
|
519 |
* |
|
33632 | 520 |
* @exception NullPointerException if {@code bytes == null} |
33160 | 521 |
* @exception IndexOutOfBoundsException if copying would cause access of data outside array |
33632 | 522 |
* bounds |
33160 | 523 |
*/ |
33632 | 524 |
native void writeDebugOutput(byte[] bytes, int offset, int length); |
33160 | 525 |
|
526 |
/** |
|
527 |
* Flush HotSpot's log stream. |
|
528 |
*/ |
|
33632 | 529 |
native void flushDebugOutput(); |
33160 | 530 |
|
531 |
/** |
|
33632 | 532 |
* Read a HotSpot Method* value from the memory location described by {@code base} plus |
533 |
* {@code displacement} and return the {@link HotSpotResolvedJavaMethodImpl} wrapping it. This |
|
534 |
* method does no checking that the memory location actually contains a valid pointer and may |
|
535 |
* crash the VM if an invalid location is provided. If the {@code base} is null then |
|
536 |
* {@code displacement} is used by itself. If {@code base} is a |
|
33160 | 537 |
* {@link HotSpotResolvedJavaMethodImpl}, {@link HotSpotConstantPool} or |
538 |
* {@link HotSpotResolvedObjectTypeImpl} then the metaspace pointer is fetched from that object |
|
33632 | 539 |
* and added to {@code displacement}. Any other non-null object type causes an |
540 |
* {@link IllegalArgumentException} to be thrown. |
|
33160 | 541 |
* |
542 |
* @param base an object to read from or null |
|
543 |
* @param displacement |
|
544 |
* @return null or the resolved method for this location |
|
545 |
*/ |
|
546 |
native HotSpotResolvedJavaMethodImpl getResolvedJavaMethod(Object base, long displacement); |
|
547 |
||
548 |
/** |
|
33632 | 549 |
* Read a HotSpot ConstantPool* value from the memory location described by {@code base} plus |
550 |
* {@code displacement} and return the {@link HotSpotConstantPool} wrapping it. This method does |
|
551 |
* no checking that the memory location actually contains a valid pointer and may crash the VM |
|
552 |
* if an invalid location is provided. If the {@code base} is null then {@code displacement} is |
|
553 |
* used by itself. If {@code base} is a {@link HotSpotResolvedJavaMethodImpl}, |
|
554 |
* {@link HotSpotConstantPool} or {@link HotSpotResolvedObjectTypeImpl} then the metaspace |
|
555 |
* pointer is fetched from that object and added to {@code displacement}. Any other non-null |
|
556 |
* object type causes an {@link IllegalArgumentException} to be thrown. |
|
33160 | 557 |
* |
558 |
* @param base an object to read from or null |
|
559 |
* @param displacement |
|
560 |
* @return null or the resolved method for this location |
|
561 |
*/ |
|
562 |
native HotSpotConstantPool getConstantPool(Object base, long displacement); |
|
563 |
||
564 |
/** |
|
33632 | 565 |
* Read a HotSpot Klass* value from the memory location described by {@code base} plus |
566 |
* {@code displacement} and return the {@link HotSpotResolvedObjectTypeImpl} wrapping it. This |
|
567 |
* method does no checking that the memory location actually contains a valid pointer and may |
|
568 |
* crash the VM if an invalid location is provided. If the {@code base} is null then |
|
569 |
* {@code displacement} is used by itself. If {@code base} is a |
|
33160 | 570 |
* {@link HotSpotResolvedJavaMethodImpl}, {@link HotSpotConstantPool} or |
571 |
* {@link HotSpotResolvedObjectTypeImpl} then the metaspace pointer is fetched from that object |
|
33632 | 572 |
* and added to {@code displacement}. Any other non-null object type causes an |
573 |
* {@link IllegalArgumentException} to be thrown. |
|
33160 | 574 |
* |
575 |
* @param base an object to read from or null |
|
576 |
* @param displacement |
|
577 |
* @param compressed true if the location contains a compressed Klass* |
|
578 |
* @return null or the resolved method for this location |
|
579 |
*/ |
|
580 |
native HotSpotResolvedObjectTypeImpl getResolvedJavaType(Object base, long displacement, boolean compressed); |
|
33632 | 581 |
|
582 |
/** |
|
583 |
* Return the size of the HotSpot ProfileData* pointed at by {@code position}. If |
|
584 |
* {@code position} is outside the space of the MethodData then an |
|
585 |
* {@link IllegalArgumentException} is thrown. A {@code position} inside the MethodData but that |
|
586 |
* isn't pointing at a valid ProfileData will crash the VM. |
|
587 |
* |
|
588 |
* @param metaspaceMethodData |
|
589 |
* @param position |
|
590 |
* @return the size of the ProfileData item pointed at by {@code position} |
|
591 |
* @throws IllegalArgumentException if an out of range position is given |
|
592 |
*/ |
|
593 |
native int methodDataProfileDataSize(long metaspaceMethodData, int position); |
|
35593
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
594 |
|
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
595 |
/** |
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
596 |
* Return the amount of native stack required for the interpreter frames represented by |
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
597 |
* {@code frame}. This is used when emitting the stack banging code to ensure that there is |
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
598 |
* enough space for the frames during deoptimization. |
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
599 |
* |
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
600 |
* @param frame |
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
601 |
* @return the number of bytes required for deoptimization of this frame state |
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
602 |
*/ |
c733fd198e6e
8146424: runtime/ReservedStack/ReservedStackTest.java triggers: assert(thread->deopt_mark() == __null) failed: no stack overflow from deopt blob/uncommon trap
never
parents:
35592
diff
changeset
|
603 |
native int interpreterFrameSize(BytecodeFrame frame); |
33160 | 604 |
} |