--- old/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/CompilerToVM.java 2016-05-04 09:43:24.000000000 -1000 +++ /dev/null 2016-05-04 09:43:24.000000000 -1000 @@ -1,608 +0,0 @@ -/* - * Copyright (c) 2011, 2016, 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 static jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.runtime; -import static jdk.vm.ci.inittimer.InitTimer.timer; - -import java.lang.reflect.Constructor; -import java.lang.reflect.Method; - -import jdk.vm.ci.code.BytecodeFrame; -import jdk.vm.ci.code.InstalledCode; -import jdk.vm.ci.code.InvalidInstalledCodeException; -import jdk.vm.ci.code.TargetDescription; -import jdk.vm.ci.common.JVMCIError; -import jdk.vm.ci.hotspotvmconfig.HotSpotVMField; -import jdk.vm.ci.inittimer.InitTimer; -import jdk.vm.ci.meta.JavaType; -import jdk.vm.ci.meta.ResolvedJavaMethod; -import jdk.vm.ci.meta.ResolvedJavaType; -import jdk.internal.misc.Unsafe; - -/** - * Calls from Java into HotSpot. The behavior of all the methods in this class that take a native - * pointer as an argument (e.g., {@link #getSymbol(long)}) is undefined if the argument does not - * denote a valid native object. - */ -final class CompilerToVM { - /** - * Initializes the native part of the JVMCI runtime. - */ - private static native void registerNatives(); - - static { - initialize(); - } - - @SuppressWarnings("try") - private static void initialize() { - try (InitTimer t = timer("CompilerToVM.registerNatives")) { - registerNatives(); - } - } - - /** - * Gets the {@link CompilerToVM} instance associated with the singleton - * {@link HotSpotJVMCIRuntime} instance. - */ - public static CompilerToVM compilerToVM() { - return runtime().getCompilerToVM(); - } - - /** - * Copies the original bytecode of {@code method} into a new byte array and returns it. - * - * @return a new byte array containing the original bytecode of {@code method} - */ - native byte[] getBytecode(HotSpotResolvedJavaMethodImpl method); - - /** - * Gets the number of entries in {@code method}'s exception handler table or 0 if it has not - * exception handler table. - */ - native int getExceptionTableLength(HotSpotResolvedJavaMethodImpl method); - - /** - * Gets the address of the first entry in {@code method}'s exception handler table. - * - * Each entry is a native object described by these fields: - * - * - * - * @return 0 if {@code method} has no exception handlers (i.e. - * {@code getExceptionTableLength(method) == 0}) - */ - native long getExceptionTableStart(HotSpotResolvedJavaMethodImpl method); - - /** - * Determines if {@code method} can be inlined. A method may not be inlinable for a number of - * reasons such as: - * - */ - native boolean canInlineMethod(HotSpotResolvedJavaMethodImpl method); - - /** - * Determines if {@code method} should be inlined at any cost. This could be because: - * - */ - native boolean shouldInlineMethod(HotSpotResolvedJavaMethodImpl method); - - /** - * Used to implement {@link ResolvedJavaType#findUniqueConcreteMethod(ResolvedJavaMethod)}. - * - * @param method the method on which to base the search - * @param actualHolderType the best known type of receiver - * @return the method result or 0 is there is no unique concrete method for {@code method} - */ - native HotSpotResolvedJavaMethodImpl findUniqueConcreteMethod(HotSpotResolvedObjectTypeImpl actualHolderType, HotSpotResolvedJavaMethodImpl method); - - /** - * Gets the implementor for the interface class {@code type}. - * - * @return the implementor if there is a single implementor, 0 if there is no implementor, or - * {@code type} itself if there is more than one implementor - */ - native HotSpotResolvedObjectTypeImpl getImplementor(HotSpotResolvedObjectTypeImpl type); - - /** - * Determines if {@code method} is ignored by security stack walks. - */ - native boolean methodIsIgnoredBySecurityStackWalk(HotSpotResolvedJavaMethodImpl method); - - /** - * Converts a name to a type. - * - * @param name a well formed Java type in {@linkplain JavaType#getName() internal} format - * @param accessingClass the context of resolution (must not 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 the type for {@code name} or 0 if resolution failed and {@code resolve == false} - * @throws LinkageError if {@code resolve == true} and the resolution failed - */ - native HotSpotResolvedObjectTypeImpl lookupType(String name, Class accessingClass, boolean resolve); - - /** - * Resolves the entry at index {@code cpi} in {@code constantPool} to an object. - * - * The behavior of this method is undefined if {@code cpi} does not denote one of the following - * entry types: {@code JVM_CONSTANT_MethodHandle}, {@code JVM_CONSTANT_MethodHandleInError}, - * {@code JVM_CONSTANT_MethodType} and {@code JVM_CONSTANT_MethodTypeInError}. - */ - native Object resolveConstantInPool(HotSpotConstantPool constantPool, int cpi); - - /** - * Resolves the entry at index {@code cpi} in {@code constantPool} to an object, looking in the - * constant pool cache first. - * - * The behavior of this method is undefined if {@code cpi} does not denote a - * {@code JVM_CONSTANT_String} entry. - */ - native Object resolvePossiblyCachedConstantInPool(HotSpotConstantPool constantPool, int cpi); - - /** - * Gets the {@code JVM_CONSTANT_NameAndType} index from the entry at index {@code cpi} in - * {@code constantPool}. - * - * The behavior of this method is undefined if {@code cpi} does not denote an entry containing a - * {@code JVM_CONSTANT_NameAndType} index. - */ - native int lookupNameAndTypeRefIndexInPool(HotSpotConstantPool constantPool, int cpi); - - /** - * Gets the name of the {@code JVM_CONSTANT_NameAndType} entry referenced by another entry - * denoted by {@code which} in {@code constantPool}. - * - * The behavior of this method is undefined if {@code which} does not denote a entry that - * references a {@code JVM_CONSTANT_NameAndType} entry. - */ - native String lookupNameInPool(HotSpotConstantPool constantPool, int which); - - /** - * Gets the signature of the {@code JVM_CONSTANT_NameAndType} entry referenced by another entry - * denoted by {@code which} in {@code constantPool}. - * - * The behavior of this method is undefined if {@code which} does not denote a entry that - * references a {@code JVM_CONSTANT_NameAndType} entry. - */ - native String lookupSignatureInPool(HotSpotConstantPool constantPool, int which); - - /** - * Gets the {@code JVM_CONSTANT_Class} index from the entry at index {@code cpi} in - * {@code constantPool}. - * - * The behavior of this method is undefined if {@code cpi} does not denote an entry containing a - * {@code JVM_CONSTANT_Class} index. - */ - native int lookupKlassRefIndexInPool(HotSpotConstantPool constantPool, int cpi); - - /** - * Looks up a class denoted by the {@code JVM_CONSTANT_Class} entry at index {@code cpi} in - * {@code constantPool}. This method does not perform any resolution. - * - * The behavior of this method is undefined if {@code cpi} does not denote a - * {@code JVM_CONSTANT_Class} entry. - * - * @return the resolved class entry or a String otherwise - */ - native Object lookupKlassInPool(HotSpotConstantPool constantPool, int cpi); - - /** - * Looks up a method denoted by the entry at index {@code cpi} in {@code constantPool}. This - * method does not perform any resolution. - * - * The behavior of this method is undefined if {@code cpi} does not denote an entry representing - * a method. - * - * @param opcode the opcode of the instruction for which the lookup is being performed or - * {@code -1}. If non-negative, then resolution checks specific to the bytecode it - * denotes are performed if the method is already resolved. Should any of these - * checks fail, 0 is returned. - * @return the resolved method entry, 0 otherwise - */ - native HotSpotResolvedJavaMethodImpl lookupMethodInPool(HotSpotConstantPool constantPool, int cpi, byte opcode); - - /** - * Ensures that the type referenced by the specified {@code JVM_CONSTANT_InvokeDynamic} entry at - * index {@code cpi} in {@code constantPool} is loaded and initialized. - * - * The behavior of this method is undefined if {@code cpi} does not denote a - * {@code JVM_CONSTANT_InvokeDynamic} entry. - */ - native void resolveInvokeDynamicInPool(HotSpotConstantPool constantPool, int cpi); - - /** - * Ensures that the type referenced by the entry for a signature - * polymorphic method at index {@code cpi} in {@code constantPool} is loaded and - * initialized. - * - * The behavior of this method is undefined if {@code cpi} does not denote an entry representing - * a signature polymorphic method. - */ - native void resolveInvokeHandleInPool(HotSpotConstantPool constantPool, int cpi); - - /** - * Gets the resolved type denoted by the entry at index {@code cpi} in {@code constantPool}. - * - * The behavior of this method is undefined if {@code cpi} does not denote an entry representing - * a class. - * - * @throws LinkageError if resolution failed - */ - native HotSpotResolvedObjectTypeImpl resolveTypeInPool(HotSpotConstantPool constantPool, int cpi) throws LinkageError; - - /** - * Looks up and attempts to resolve the {@code JVM_CONSTANT_Field} entry at index {@code cpi} in - * {@code constantPool}. The values returned in {@code info} are: - * - * 
-     *     [(int) flags,   // only valid if field is resolved
-     *      (int) offset]  // only valid if field is resolved
-     *
- * - * The behavior of this method is undefined if {@code cpi} does not denote a - * {@code JVM_CONSTANT_Field} entry. - * - * @param info an array in which the details of the field are returned - * @return the type defining the field if resolution is successful, 0 otherwise - */ - native HotSpotResolvedObjectTypeImpl resolveFieldInPool(HotSpotConstantPool constantPool, int cpi, byte opcode, long[] info); - - /** - * Converts {@code cpci} from an index into the cache for {@code constantPool} to an index - * directly into {@code constantPool}. - * - * The behavior of this method is undefined if {@code ccpi} is an invalid constant pool cache - * index. - */ - native int constantPoolRemapInstructionOperandFromCache(HotSpotConstantPool constantPool, int cpci); - - /** - * Gets the appendix object (if any) associated with the entry at index {@code cpi} in - * {@code constantPool}. - */ - native Object lookupAppendixInPool(HotSpotConstantPool constantPool, int cpi); - - /** - * Installs the result of a compilation into the code cache. - * - * @param target the target where this code should be installed - * @param compiledCode the result of a compilation - * @param code the details of the installed CodeBlob are written to this object - * @return the outcome of the installation which will be one of - * {@link HotSpotVMConfig#codeInstallResultOk}, - * {@link HotSpotVMConfig#codeInstallResultCacheFull}, - * {@link HotSpotVMConfig#codeInstallResultCodeTooLarge}, - * {@link HotSpotVMConfig#codeInstallResultDependenciesFailed} or - * {@link HotSpotVMConfig#codeInstallResultDependenciesInvalid}. - * @throws JVMCIError if there is something wrong with the compiled code or the associated - * metadata. - */ - native int installCode(TargetDescription target, HotSpotCompiledCode compiledCode, InstalledCode code, HotSpotSpeculationLog speculationLog); - - public native int getMetadata(TargetDescription target, HotSpotCompiledCode compiledCode, HotSpotMetaData metaData); - - /** - * Resets all compilation statistics. - */ - native void resetCompilationStatistics(); - - /** - * Initializes the fields of {@code config}. - */ - native long initializeConfiguration(HotSpotVMConfig config); - - /** - * Resolves the implementation of {@code method} for virtual dispatches on objects of dynamic - * type {@code exactReceiver}. This resolution process only searches "up" the class hierarchy of - * {@code exactReceiver}. - * - * @param caller the caller or context type used to perform access checks - * @return the link-time resolved method (might be abstract) or {@code 0} if it can not be - * linked - */ - native HotSpotResolvedJavaMethodImpl resolveMethod(HotSpotResolvedObjectTypeImpl exactReceiver, HotSpotResolvedJavaMethodImpl method, HotSpotResolvedObjectTypeImpl caller); - - /** - * Gets the static initializer of {@code type}. - * - * @return 0 if {@code type} has no static initializer - */ - native HotSpotResolvedJavaMethodImpl getClassInitializer(HotSpotResolvedObjectTypeImpl type); - - /** - * Determines if {@code type} or any of its currently loaded subclasses overrides - * {@code Object.finalize()}. - */ - native boolean hasFinalizableSubclass(HotSpotResolvedObjectTypeImpl type); - - /** - * Gets the method corresponding to {@code holder} and slot number {@code slot} (i.e. - * {@link Method#slot} or {@link Constructor#slot}). - */ - native HotSpotResolvedJavaMethodImpl getResolvedJavaMethodAtSlot(Class holder, int slot); - - /** - * Gets the maximum absolute offset of a PC relative call to {@code address} from any position - * in the code cache. - * - * @param address an address that may be called from any code in the code cache - * @return -1 if {@code address == 0} - */ - native long getMaxCallTargetOffset(long address); - - /** - * Gets a textual disassembly of {@code codeBlob}. - * - * @return a non-zero length string containing a disassembly of {@code codeBlob} or null if - * {@code codeBlob} could not be disassembled for some reason - */ - // The HotSpot disassembler seems not to be thread safe so it's better to synchronize its usage - synchronized native String disassembleCodeBlob(InstalledCode installedCode); - - /** - * Gets a stack trace element for {@code method} at bytecode index {@code bci}. - */ - native StackTraceElement getStackTraceElement(HotSpotResolvedJavaMethodImpl method, int bci); - - /** - * Executes some {@code installedCode} with arguments {@code args}. - * - * @return the result of executing {@code installedCode} - * @throws InvalidInstalledCodeException if {@code installedCode} has been invalidated - */ - native Object executeInstalledCode(Object[] args, InstalledCode installedCode) throws InvalidInstalledCodeException; - - /** - * Gets the line number table for {@code method}. The line number table is encoded as (bci, - * source line number) pairs. - * - * @return the line number table for {@code method} or null if it doesn't have one - */ - native long[] getLineNumberTable(HotSpotResolvedJavaMethodImpl method); - - /** - * Gets the number of entries in the local variable table for {@code method}. - * - * @return the number of entries in the local variable table for {@code method} - */ - native int getLocalVariableTableLength(HotSpotResolvedJavaMethodImpl method); - - /** - * Gets the address of the first entry in the local variable table for {@code method}. - * - * Each entry is a native object described by these fields: - * - * - * - * @return 0 if {@code method} does not have a local variable table - */ - native long getLocalVariableTableStart(HotSpotResolvedJavaMethodImpl method); - - /** - * Reads an object pointer within a VM data structure. That is, any {@link HotSpotVMField} whose - * {@link HotSpotVMField#type() type} is {@code "oop"} (e.g., - * {@code ArrayKlass::_component_mirror}, {@code Klass::_java_mirror}, - * {@code JavaThread::_threadObj}). - * - * Note that {@link Unsafe#getObject(Object, long)} cannot be used for this since it does a - * {@code narrowOop} read if the VM is using compressed oops whereas oops within VM data - * structures are (currently) always uncompressed. - * - * @param address address of an oop field within a VM data structure - */ - native Object readUncompressedOop(long address); - - /** - * Determines if {@code method} should not be inlined or compiled. - */ - native void doNotInlineOrCompile(HotSpotResolvedJavaMethodImpl method); - - /** - * Invalidates the profiling information for {@code method} and (re)initializes it such that - * profiling restarts upon its next invocation. - */ - native void reprofile(HotSpotResolvedJavaMethodImpl method); - - /** - * Invalidates {@code installedCode} such that {@link InvalidInstalledCodeException} will be - * raised the next time {@code installedCode} is executed. - */ - native void invalidateInstalledCode(InstalledCode installedCode); - - /** - * Collects the current values of all JVMCI benchmark counters, summed up over all threads. - */ - native long[] collectCounters(); - - /** - * Determines if {@code metaspaceMethodData} is mature. - */ - native boolean isMature(long metaspaceMethodData); - - /** - * Generate a unique id to identify the result of the compile. - */ - native int allocateCompileId(HotSpotResolvedJavaMethodImpl method, int entryBCI); - - /** - * Determines if {@code method} has OSR compiled code identified by {@code entryBCI} for - * compilation level {@code level}. - */ - native boolean hasCompiledCodeForOSR(HotSpotResolvedJavaMethodImpl method, int entryBCI, int level); - - /** - * Gets the value of {@code metaspaceSymbol} as a String. - */ - native String getSymbol(long metaspaceSymbol); - - /** - * Lookup a VMSymbol from a String. - */ - native long lookupSymbol(String symbol); - - /** - * Looks for the next Java stack frame matching an entry in {@code methods}. - * - * @param frame the starting point of the search, where {@code null} refers to the topmost frame - * @param methods the methods to look for, where {@code null} means that any frame is returned - * @return the frame, or {@code null} if the end of the stack was reached during the search - */ - native HotSpotStackFrameReference getNextStackFrame(HotSpotStackFrameReference frame, ResolvedJavaMethod[] methods, int initialSkip); - - /** - * Materializes all virtual objects within {@code stackFrame} updates its locals. - * - * @param invalidate if {@code true}, the compiled method for the stack frame will be - * invalidated. - */ - native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate); - - /** - * Gets the v-table index for interface method {@code method} in the receiver {@code type} or - * {@link HotSpotVMConfig#invalidVtableIndex} if {@code method} is not in {@code type}'s - * v-table. - * - * @throws InternalError if {@code type} is an interface or {@code method} is not held by an - * interface or class represented by {@code type} is not initialized - */ - native int getVtableIndexForInterfaceMethod(HotSpotResolvedObjectTypeImpl type, HotSpotResolvedJavaMethodImpl method); - - /** - * Determines if debug info should also be emitted at non-safepoint locations. - */ - - native boolean shouldDebugNonSafepoints(); - - /** - * Writes {@code length} bytes from {@code bytes} starting at offset {@code offset} to the - * HotSpot's log stream. - * - * @exception NullPointerException if {@code bytes == null} - * @exception IndexOutOfBoundsException if copying would cause access of data outside array - * bounds - */ - native void writeDebugOutput(byte[] bytes, int offset, int length); - - /** - * Flush HotSpot's log stream. - */ - native void flushDebugOutput(); - - /** - * Read a HotSpot Method* value from the memory location described by {@code base} plus - * {@code displacement} and return the {@link HotSpotResolvedJavaMethodImpl} wrapping it. This - * method does no checking that the memory location actually contains a valid pointer and may - * crash the VM if an invalid location is provided. If the {@code base} is null then - * {@code displacement} is used by itself. If {@code base} is a - * {@link HotSpotResolvedJavaMethodImpl}, {@link HotSpotConstantPool} or - * {@link HotSpotResolvedObjectTypeImpl} then the metaspace pointer is fetched from that object - * and added to {@code displacement}. Any other non-null object type causes an - * {@link IllegalArgumentException} to be thrown. - * - * @param base an object to read from or null - * @param displacement - * @return null or the resolved method for this location - */ - native HotSpotResolvedJavaMethodImpl getResolvedJavaMethod(Object base, long displacement); - - /** - * Read a HotSpot ConstantPool* value from the memory location described by {@code base} plus - * {@code displacement} and return the {@link HotSpotConstantPool} wrapping it. This method does - * no checking that the memory location actually contains a valid pointer and may crash the VM - * if an invalid location is provided. If the {@code base} is null then {@code displacement} is - * used by itself. If {@code base} is a {@link HotSpotResolvedJavaMethodImpl}, - * {@link HotSpotConstantPool} or {@link HotSpotResolvedObjectTypeImpl} then the metaspace - * pointer is fetched from that object and added to {@code displacement}. Any other non-null - * object type causes an {@link IllegalArgumentException} to be thrown. - * - * @param base an object to read from or null - * @param displacement - * @return null or the resolved method for this location - */ - native HotSpotConstantPool getConstantPool(Object base, long displacement); - - /** - * Read a HotSpot Klass* value from the memory location described by {@code base} plus - * {@code displacement} and return the {@link HotSpotResolvedObjectTypeImpl} wrapping it. This - * method does no checking that the memory location actually contains a valid pointer and may - * crash the VM if an invalid location is provided. If the {@code base} is null then - * {@code displacement} is used by itself. If {@code base} is a - * {@link HotSpotResolvedJavaMethodImpl}, {@link HotSpotConstantPool} or - * {@link HotSpotResolvedObjectTypeImpl} then the metaspace pointer is fetched from that object - * and added to {@code displacement}. Any other non-null object type causes an - * {@link IllegalArgumentException} to be thrown. - * - * @param base an object to read from or null - * @param displacement - * @param compressed true if the location contains a compressed Klass* - * @return null or the resolved method for this location - */ - native HotSpotResolvedObjectTypeImpl getResolvedJavaType(Object base, long displacement, boolean compressed); - - /** - * Return the size of the HotSpot ProfileData* pointed at by {@code position}. If - * {@code position} is outside the space of the MethodData then an - * {@link IllegalArgumentException} is thrown. A {@code position} inside the MethodData but that - * isn't pointing at a valid ProfileData will crash the VM. - * - * @param metaspaceMethodData - * @param position - * @return the size of the ProfileData item pointed at by {@code position} - * @throws IllegalArgumentException if an out of range position is given - */ - native int methodDataProfileDataSize(long metaspaceMethodData, int position); - - /** - * Return the amount of native stack required for the interpreter frames represented by - * {@code frame}. This is used when emitting the stack banging code to ensure that there is - * enough space for the frames during deoptimization. - * - * @param frame - * @return the number of bytes required for deoptimization of this frame state - */ - native int interpreterFrameSize(BytecodeFrame frame); -} --- /dev/null 2016-05-04 09:43:24.000000000 -1000 +++ new/src/jdk.vm.ci.hotspot/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/CompilerToVM.java 2016-05-04 09:43:23.000000000 -1000 @@ -0,0 +1,608 @@ +/* + * Copyright (c) 2011, 2016, 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 static jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.runtime; +import static jdk.vm.ci.inittimer.InitTimer.timer; + +import java.lang.reflect.Constructor; +import java.lang.reflect.Method; + +import jdk.vm.ci.code.BytecodeFrame; +import jdk.vm.ci.code.InstalledCode; +import jdk.vm.ci.code.InvalidInstalledCodeException; +import jdk.vm.ci.code.TargetDescription; +import jdk.vm.ci.common.JVMCIError; +import jdk.vm.ci.hotspotvmconfig.HotSpotVMField; +import jdk.vm.ci.inittimer.InitTimer; +import jdk.vm.ci.meta.JavaType; +import jdk.vm.ci.meta.ResolvedJavaMethod; +import jdk.vm.ci.meta.ResolvedJavaType; +import jdk.internal.misc.Unsafe; + +/** + * Calls from Java into HotSpot. The behavior of all the methods in this class that take a native + * pointer as an argument (e.g., {@link #getSymbol(long)}) is undefined if the argument does not + * denote a valid native object. + */ +final class CompilerToVM { + /** + * Initializes the native part of the JVMCI runtime. + */ + private static native void registerNatives(); + + static { + initialize(); + } + + @SuppressWarnings("try") + private static void initialize() { + try (InitTimer t = timer("CompilerToVM.registerNatives")) { + registerNatives(); + } + } + + /** + * Gets the {@link CompilerToVM} instance associated with the singleton + * {@link HotSpotJVMCIRuntime} instance. + */ + public static CompilerToVM compilerToVM() { + return runtime().getCompilerToVM(); + } + + /** + * Copies the original bytecode of {@code method} into a new byte array and returns it. + * + * @return a new byte array containing the original bytecode of {@code method} + */ + native byte[] getBytecode(HotSpotResolvedJavaMethodImpl method); + + /** + * Gets the number of entries in {@code method}'s exception handler table or 0 if it has not + * exception handler table. + */ + native int getExceptionTableLength(HotSpotResolvedJavaMethodImpl method); + + /** + * Gets the address of the first entry in {@code method}'s exception handler table. + * + * Each entry is a native object described by these fields: + * + * + * + * @return 0 if {@code method} has no exception handlers (i.e. + * {@code getExceptionTableLength(method) == 0}) + */ + native long getExceptionTableStart(HotSpotResolvedJavaMethodImpl method); + + /** + * Determines if {@code method} can be inlined. A method may not be inlinable for a number of + * reasons such as: + * + */ + native boolean canInlineMethod(HotSpotResolvedJavaMethodImpl method); + + /** + * Determines if {@code method} should be inlined at any cost. This could be because: + * + */ + native boolean shouldInlineMethod(HotSpotResolvedJavaMethodImpl method); + + /** + * Used to implement {@link ResolvedJavaType#findUniqueConcreteMethod(ResolvedJavaMethod)}. + * + * @param method the method on which to base the search + * @param actualHolderType the best known type of receiver + * @return the method result or 0 is there is no unique concrete method for {@code method} + */ + native HotSpotResolvedJavaMethodImpl findUniqueConcreteMethod(HotSpotResolvedObjectTypeImpl actualHolderType, HotSpotResolvedJavaMethodImpl method); + + /** + * Gets the implementor for the interface class {@code type}. + * + * @return the implementor if there is a single implementor, 0 if there is no implementor, or + * {@code type} itself if there is more than one implementor + */ + native HotSpotResolvedObjectTypeImpl getImplementor(HotSpotResolvedObjectTypeImpl type); + + /** + * Determines if {@code method} is ignored by security stack walks. + */ + native boolean methodIsIgnoredBySecurityStackWalk(HotSpotResolvedJavaMethodImpl method); + + /** + * Converts a name to a type. + * + * @param name a well formed Java type in {@linkplain JavaType#getName() internal} format + * @param accessingClass the context of resolution (must not 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 the type for {@code name} or 0 if resolution failed and {@code resolve == false} + * @throws LinkageError if {@code resolve == true} and the resolution failed + */ + native HotSpotResolvedObjectTypeImpl lookupType(String name, Class accessingClass, boolean resolve); + + /** + * Resolves the entry at index {@code cpi} in {@code constantPool} to an object. + * + * The behavior of this method is undefined if {@code cpi} does not denote one of the following + * entry types: {@code JVM_CONSTANT_MethodHandle}, {@code JVM_CONSTANT_MethodHandleInError}, + * {@code JVM_CONSTANT_MethodType} and {@code JVM_CONSTANT_MethodTypeInError}. + */ + native Object resolveConstantInPool(HotSpotConstantPool constantPool, int cpi); + + /** + * Resolves the entry at index {@code cpi} in {@code constantPool} to an object, looking in the + * constant pool cache first. + * + * The behavior of this method is undefined if {@code cpi} does not denote a + * {@code JVM_CONSTANT_String} entry. + */ + native Object resolvePossiblyCachedConstantInPool(HotSpotConstantPool constantPool, int cpi); + + /** + * Gets the {@code JVM_CONSTANT_NameAndType} index from the entry at index {@code cpi} in + * {@code constantPool}. + * + * The behavior of this method is undefined if {@code cpi} does not denote an entry containing a + * {@code JVM_CONSTANT_NameAndType} index. + */ + native int lookupNameAndTypeRefIndexInPool(HotSpotConstantPool constantPool, int cpi); + + /** + * Gets the name of the {@code JVM_CONSTANT_NameAndType} entry referenced by another entry + * denoted by {@code which} in {@code constantPool}. + * + * The behavior of this method is undefined if {@code which} does not denote a entry that + * references a {@code JVM_CONSTANT_NameAndType} entry. + */ + native String lookupNameInPool(HotSpotConstantPool constantPool, int which); + + /** + * Gets the signature of the {@code JVM_CONSTANT_NameAndType} entry referenced by another entry + * denoted by {@code which} in {@code constantPool}. + * + * The behavior of this method is undefined if {@code which} does not denote a entry that + * references a {@code JVM_CONSTANT_NameAndType} entry. + */ + native String lookupSignatureInPool(HotSpotConstantPool constantPool, int which); + + /** + * Gets the {@code JVM_CONSTANT_Class} index from the entry at index {@code cpi} in + * {@code constantPool}. + * + * The behavior of this method is undefined if {@code cpi} does not denote an entry containing a + * {@code JVM_CONSTANT_Class} index. + */ + native int lookupKlassRefIndexInPool(HotSpotConstantPool constantPool, int cpi); + + /** + * Looks up a class denoted by the {@code JVM_CONSTANT_Class} entry at index {@code cpi} in + * {@code constantPool}. This method does not perform any resolution. + * + * The behavior of this method is undefined if {@code cpi} does not denote a + * {@code JVM_CONSTANT_Class} entry. + * + * @return the resolved class entry or a String otherwise + */ + native Object lookupKlassInPool(HotSpotConstantPool constantPool, int cpi); + + /** + * Looks up a method denoted by the entry at index {@code cpi} in {@code constantPool}. This + * method does not perform any resolution. + * + * The behavior of this method is undefined if {@code cpi} does not denote an entry representing + * a method. + * + * @param opcode the opcode of the instruction for which the lookup is being performed or + * {@code -1}. If non-negative, then resolution checks specific to the bytecode it + * denotes are performed if the method is already resolved. Should any of these + * checks fail, 0 is returned. + * @return the resolved method entry, 0 otherwise + */ + native HotSpotResolvedJavaMethodImpl lookupMethodInPool(HotSpotConstantPool constantPool, int cpi, byte opcode); + + /** + * Ensures that the type referenced by the specified {@code JVM_CONSTANT_InvokeDynamic} entry at + * index {@code cpi} in {@code constantPool} is loaded and initialized. + * + * The behavior of this method is undefined if {@code cpi} does not denote a + * {@code JVM_CONSTANT_InvokeDynamic} entry. + */ + native void resolveInvokeDynamicInPool(HotSpotConstantPool constantPool, int cpi); + + /** + * Ensures that the type referenced by the entry for a signature + * polymorphic method at index {@code cpi} in {@code constantPool} is loaded and + * initialized. + * + * The behavior of this method is undefined if {@code cpi} does not denote an entry representing + * a signature polymorphic method. + */ + native void resolveInvokeHandleInPool(HotSpotConstantPool constantPool, int cpi); + + /** + * Gets the resolved type denoted by the entry at index {@code cpi} in {@code constantPool}. + * + * The behavior of this method is undefined if {@code cpi} does not denote an entry representing + * a class. + * + * @throws LinkageError if resolution failed + */ + native HotSpotResolvedObjectTypeImpl resolveTypeInPool(HotSpotConstantPool constantPool, int cpi) throws LinkageError; + + /** + * Looks up and attempts to resolve the {@code JVM_CONSTANT_Field} entry at index {@code cpi} in + * {@code constantPool}. The values returned in {@code info} are: + * + * 
+     *     [(int) flags,   // only valid if field is resolved
+     *      (int) offset]  // only valid if field is resolved
+     *
+ * + * The behavior of this method is undefined if {@code cpi} does not denote a + * {@code JVM_CONSTANT_Field} entry. + * + * @param info an array in which the details of the field are returned + * @return the type defining the field if resolution is successful, 0 otherwise + */ + native HotSpotResolvedObjectTypeImpl resolveFieldInPool(HotSpotConstantPool constantPool, int cpi, byte opcode, long[] info); + + /** + * Converts {@code cpci} from an index into the cache for {@code constantPool} to an index + * directly into {@code constantPool}. + * + * The behavior of this method is undefined if {@code ccpi} is an invalid constant pool cache + * index. + */ + native int constantPoolRemapInstructionOperandFromCache(HotSpotConstantPool constantPool, int cpci); + + /** + * Gets the appendix object (if any) associated with the entry at index {@code cpi} in + * {@code constantPool}. + */ + native Object lookupAppendixInPool(HotSpotConstantPool constantPool, int cpi); + + /** + * Installs the result of a compilation into the code cache. + * + * @param target the target where this code should be installed + * @param compiledCode the result of a compilation + * @param code the details of the installed CodeBlob are written to this object + * @return the outcome of the installation which will be one of + * {@link HotSpotVMConfig#codeInstallResultOk}, + * {@link HotSpotVMConfig#codeInstallResultCacheFull}, + * {@link HotSpotVMConfig#codeInstallResultCodeTooLarge}, + * {@link HotSpotVMConfig#codeInstallResultDependenciesFailed} or + * {@link HotSpotVMConfig#codeInstallResultDependenciesInvalid}. + * @throws JVMCIError if there is something wrong with the compiled code or the associated + * metadata. + */ + native int installCode(TargetDescription target, HotSpotCompiledCode compiledCode, InstalledCode code, HotSpotSpeculationLog speculationLog); + + public native int getMetadata(TargetDescription target, HotSpotCompiledCode compiledCode, HotSpotMetaData metaData); + + /** + * Resets all compilation statistics. + */ + native void resetCompilationStatistics(); + + /** + * Initializes the fields of {@code config}. + */ + native long initializeConfiguration(HotSpotVMConfig config); + + /** + * Resolves the implementation of {@code method} for virtual dispatches on objects of dynamic + * type {@code exactReceiver}. This resolution process only searches "up" the class hierarchy of + * {@code exactReceiver}. + * + * @param caller the caller or context type used to perform access checks + * @return the link-time resolved method (might be abstract) or {@code 0} if it can not be + * linked + */ + native HotSpotResolvedJavaMethodImpl resolveMethod(HotSpotResolvedObjectTypeImpl exactReceiver, HotSpotResolvedJavaMethodImpl method, HotSpotResolvedObjectTypeImpl caller); + + /** + * Gets the static initializer of {@code type}. + * + * @return 0 if {@code type} has no static initializer + */ + native HotSpotResolvedJavaMethodImpl getClassInitializer(HotSpotResolvedObjectTypeImpl type); + + /** + * Determines if {@code type} or any of its currently loaded subclasses overrides + * {@code Object.finalize()}. + */ + native boolean hasFinalizableSubclass(HotSpotResolvedObjectTypeImpl type); + + /** + * Gets the method corresponding to {@code holder} and slot number {@code slot} (i.e. + * {@link Method#slot} or {@link Constructor#slot}). + */ + native HotSpotResolvedJavaMethodImpl getResolvedJavaMethodAtSlot(Class holder, int slot); + + /** + * Gets the maximum absolute offset of a PC relative call to {@code address} from any position + * in the code cache. + * + * @param address an address that may be called from any code in the code cache + * @return -1 if {@code address == 0} + */ + native long getMaxCallTargetOffset(long address); + + /** + * Gets a textual disassembly of {@code codeBlob}. + * + * @return a non-zero length string containing a disassembly of {@code codeBlob} or null if + * {@code codeBlob} could not be disassembled for some reason + */ + // The HotSpot disassembler seems not to be thread safe so it's better to synchronize its usage + synchronized native String disassembleCodeBlob(InstalledCode installedCode); + + /** + * Gets a stack trace element for {@code method} at bytecode index {@code bci}. + */ + native StackTraceElement getStackTraceElement(HotSpotResolvedJavaMethodImpl method, int bci); + + /** + * Executes some {@code installedCode} with arguments {@code args}. + * + * @return the result of executing {@code installedCode} + * @throws InvalidInstalledCodeException if {@code installedCode} has been invalidated + */ + native Object executeInstalledCode(Object[] args, InstalledCode installedCode) throws InvalidInstalledCodeException; + + /** + * Gets the line number table for {@code method}. The line number table is encoded as (bci, + * source line number) pairs. + * + * @return the line number table for {@code method} or null if it doesn't have one + */ + native long[] getLineNumberTable(HotSpotResolvedJavaMethodImpl method); + + /** + * Gets the number of entries in the local variable table for {@code method}. + * + * @return the number of entries in the local variable table for {@code method} + */ + native int getLocalVariableTableLength(HotSpotResolvedJavaMethodImpl method); + + /** + * Gets the address of the first entry in the local variable table for {@code method}. + * + * Each entry is a native object described by these fields: + * + * + * + * @return 0 if {@code method} does not have a local variable table + */ + native long getLocalVariableTableStart(HotSpotResolvedJavaMethodImpl method); + + /** + * Reads an object pointer within a VM data structure. That is, any {@link HotSpotVMField} whose + * {@link HotSpotVMField#type() type} is {@code "oop"} (e.g., + * {@code ArrayKlass::_component_mirror}, {@code Klass::_java_mirror}, + * {@code JavaThread::_threadObj}). + * + * Note that {@link Unsafe#getObject(Object, long)} cannot be used for this since it does a + * {@code narrowOop} read if the VM is using compressed oops whereas oops within VM data + * structures are (currently) always uncompressed. + * + * @param address address of an oop field within a VM data structure + */ + native Object readUncompressedOop(long address); + + /** + * Determines if {@code method} should not be inlined or compiled. + */ + native void doNotInlineOrCompile(HotSpotResolvedJavaMethodImpl method); + + /** + * Invalidates the profiling information for {@code method} and (re)initializes it such that + * profiling restarts upon its next invocation. + */ + native void reprofile(HotSpotResolvedJavaMethodImpl method); + + /** + * Invalidates {@code installedCode} such that {@link InvalidInstalledCodeException} will be + * raised the next time {@code installedCode} is executed. + */ + native void invalidateInstalledCode(InstalledCode installedCode); + + /** + * Collects the current values of all JVMCI benchmark counters, summed up over all threads. + */ + native long[] collectCounters(); + + /** + * Determines if {@code metaspaceMethodData} is mature. + */ + native boolean isMature(long metaspaceMethodData); + + /** + * Generate a unique id to identify the result of the compile. + */ + native int allocateCompileId(HotSpotResolvedJavaMethodImpl method, int entryBCI); + + /** + * Determines if {@code method} has OSR compiled code identified by {@code entryBCI} for + * compilation level {@code level}. + */ + native boolean hasCompiledCodeForOSR(HotSpotResolvedJavaMethodImpl method, int entryBCI, int level); + + /** + * Gets the value of {@code metaspaceSymbol} as a String. + */ + native String getSymbol(long metaspaceSymbol); + + /** + * Lookup a VMSymbol from a String. + */ + native long lookupSymbol(String symbol); + + /** + * Looks for the next Java stack frame matching an entry in {@code methods}. + * + * @param frame the starting point of the search, where {@code null} refers to the topmost frame + * @param methods the methods to look for, where {@code null} means that any frame is returned + * @return the frame, or {@code null} if the end of the stack was reached during the search + */ + native HotSpotStackFrameReference getNextStackFrame(HotSpotStackFrameReference frame, ResolvedJavaMethod[] methods, int initialSkip); + + /** + * Materializes all virtual objects within {@code stackFrame} updates its locals. + * + * @param invalidate if {@code true}, the compiled method for the stack frame will be + * invalidated. + */ + native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate); + + /** + * Gets the v-table index for interface method {@code method} in the receiver {@code type} or + * {@link HotSpotVMConfig#invalidVtableIndex} if {@code method} is not in {@code type}'s + * v-table. + * + * @throws InternalError if {@code type} is an interface or {@code method} is not held by an + * interface or class represented by {@code type} is not initialized + */ + native int getVtableIndexForInterfaceMethod(HotSpotResolvedObjectTypeImpl type, HotSpotResolvedJavaMethodImpl method); + + /** + * Determines if debug info should also be emitted at non-safepoint locations. + */ + + native boolean shouldDebugNonSafepoints(); + + /** + * Writes {@code length} bytes from {@code bytes} starting at offset {@code offset} to the + * HotSpot's log stream. + * + * @exception NullPointerException if {@code bytes == null} + * @exception IndexOutOfBoundsException if copying would cause access of data outside array + * bounds + */ + native void writeDebugOutput(byte[] bytes, int offset, int length); + + /** + * Flush HotSpot's log stream. + */ + native void flushDebugOutput(); + + /** + * Read a HotSpot Method* value from the memory location described by {@code base} plus + * {@code displacement} and return the {@link HotSpotResolvedJavaMethodImpl} wrapping it. This + * method does no checking that the memory location actually contains a valid pointer and may + * crash the VM if an invalid location is provided. If the {@code base} is null then + * {@code displacement} is used by itself. If {@code base} is a + * {@link HotSpotResolvedJavaMethodImpl}, {@link HotSpotConstantPool} or + * {@link HotSpotResolvedObjectTypeImpl} then the metaspace pointer is fetched from that object + * and added to {@code displacement}. Any other non-null object type causes an + * {@link IllegalArgumentException} to be thrown. + * + * @param base an object to read from or null + * @param displacement + * @return null or the resolved method for this location + */ + native HotSpotResolvedJavaMethodImpl getResolvedJavaMethod(Object base, long displacement); + + /** + * Read a HotSpot ConstantPool* value from the memory location described by {@code base} plus + * {@code displacement} and return the {@link HotSpotConstantPool} wrapping it. This method does + * no checking that the memory location actually contains a valid pointer and may crash the VM + * if an invalid location is provided. If the {@code base} is null then {@code displacement} is + * used by itself. If {@code base} is a {@link HotSpotResolvedJavaMethodImpl}, + * {@link HotSpotConstantPool} or {@link HotSpotResolvedObjectTypeImpl} then the metaspace + * pointer is fetched from that object and added to {@code displacement}. Any other non-null + * object type causes an {@link IllegalArgumentException} to be thrown. + * + * @param base an object to read from or null + * @param displacement + * @return null or the resolved method for this location + */ + native HotSpotConstantPool getConstantPool(Object base, long displacement); + + /** + * Read a HotSpot Klass* value from the memory location described by {@code base} plus + * {@code displacement} and return the {@link HotSpotResolvedObjectTypeImpl} wrapping it. This + * method does no checking that the memory location actually contains a valid pointer and may + * crash the VM if an invalid location is provided. If the {@code base} is null then + * {@code displacement} is used by itself. If {@code base} is a + * {@link HotSpotResolvedJavaMethodImpl}, {@link HotSpotConstantPool} or + * {@link HotSpotResolvedObjectTypeImpl} then the metaspace pointer is fetched from that object + * and added to {@code displacement}. Any other non-null object type causes an + * {@link IllegalArgumentException} to be thrown. + * + * @param base an object to read from or null + * @param displacement + * @param compressed true if the location contains a compressed Klass* + * @return null or the resolved method for this location + */ + native HotSpotResolvedObjectTypeImpl getResolvedJavaType(Object base, long displacement, boolean compressed); + + /** + * Return the size of the HotSpot ProfileData* pointed at by {@code position}. If + * {@code position} is outside the space of the MethodData then an + * {@link IllegalArgumentException} is thrown. A {@code position} inside the MethodData but that + * isn't pointing at a valid ProfileData will crash the VM. + * + * @param metaspaceMethodData + * @param position + * @return the size of the ProfileData item pointed at by {@code position} + * @throws IllegalArgumentException if an out of range position is given + */ + native int methodDataProfileDataSize(long metaspaceMethodData, int position); + + /** + * Return the amount of native stack required for the interpreter frames represented by + * {@code frame}. This is used when emitting the stack banging code to ensure that there is + * enough space for the frames during deoptimization. + * + * @param frame + * @return the number of bytes required for deoptimization of this frame state + */ + native int interpreterFrameSize(BytecodeFrame frame); +}