graal-jvmci-8: jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl.java comparison

comparison jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl.java @ 22672:1bbd4a7c274b

Rename jdk.internal.jvmci to jdk.vm.ci

author	Tom Rodriguez <tom.rodriguez@oracle.com>
date	Thu, 08 Oct 2015 17:28:41 -0700
parents	jvmci/jdk.internal.jvmci.hotspot/src/jdk/internal/jvmci/hotspot/HotSpotResolvedJavaMethodImpl.java@9f24bf92ee94
children	ce4bec6db0b2

comparison

equal deleted inserted replaced

-:97f30e4d0e95
+:1bbd4a7c274b
+/*
+* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*/
+package jdk.vm.ci.hotspot;
+import static jdk.vm.ci.hotspot.CompilerToVM.compilerToVM;
+import static jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.runtime;
+import static jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod.Options.UseProfilingInformation;
+import static jdk.vm.ci.hotspot.HotSpotVMConfig.config;
+import static jdk.vm.ci.hotspot.UnsafeAccess.UNSAFE;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.lang.reflect.Type;
+import java.util.HashMap;
+import java.util.Map;
+import jdk.vm.ci.common.JVMCIError;
+import jdk.vm.ci.meta.Constant;
+import jdk.vm.ci.meta.ConstantPool;
+import jdk.vm.ci.meta.DefaultProfilingInfo;
+import jdk.vm.ci.meta.ExceptionHandler;
+import jdk.vm.ci.meta.JavaConstant;
+import jdk.vm.ci.meta.JavaMethod;
+import jdk.vm.ci.meta.JavaType;
+import jdk.vm.ci.meta.LineNumberTable;
+import jdk.vm.ci.meta.LineNumberTableImpl;
+import jdk.vm.ci.meta.Local;
+import jdk.vm.ci.meta.LocalImpl;
+import jdk.vm.ci.meta.LocalVariableTable;
+import jdk.vm.ci.meta.LocalVariableTableImpl;
+import jdk.vm.ci.meta.ModifiersProvider;
+import jdk.vm.ci.meta.ProfilingInfo;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+import jdk.vm.ci.meta.ResolvedJavaType;
+import jdk.vm.ci.meta.Signature;
+import jdk.vm.ci.meta.SpeculationLog;
+import jdk.vm.ci.meta.TriState;
+/**
+* Implementation of {@link JavaMethod} for resolved HotSpot methods.
+*/
+final class HotSpotResolvedJavaMethodImpl extends HotSpotMethod implements HotSpotResolvedJavaMethod, HotSpotProxified, MetaspaceWrapperObject {
+/**
+* Reference to metaspace Method object.
+*/
+private final long metaspaceMethod;
+private final HotSpotResolvedObjectTypeImpl holder;
+private final HotSpotConstantPool constantPool;
+private final HotSpotSignature signature;
+private HotSpotMethodData methodData;
+private byte[] code;
+private Member toJavaCache;
+/**
+* Gets the holder of a HotSpot metaspace method native object.
+*
+* @param metaspaceMethod a metaspace Method object
+* @return the {@link ResolvedJavaType} corresponding to the holder of the
+*         {@code metaspaceMethod}
+*/
+private static HotSpotResolvedObjectTypeImpl getHolder(long metaspaceMethod) {
+HotSpotVMConfig config = config();
+final long metaspaceConstMethod = UNSAFE.getAddress(metaspaceMethod + config.methodConstMethodOffset);
+final long metaspaceConstantPool = UNSAFE.getAddress(metaspaceConstMethod + config.constMethodConstantsOffset);
+return compilerToVM().getResolvedJavaType(null, metaspaceConstantPool + config.constantPoolHolderOffset, false);
+}
+/**
+* Gets the JVMCI mirror from a HotSpot method. The VM is responsible for ensuring that the
+* Method* is kept alive for the duration of this call and the
+* {@link HotSpotJVMCIMetaAccessContext} keeps it alive after that.
+*
+* Called from the VM.
+*
+* @param metaspaceMethod a metaspace Method object
+* @return the {@link ResolvedJavaMethod} corresponding to {@code metaspaceMethod}
+*/
+@SuppressWarnings("unused")
+private static HotSpotResolvedJavaMethod fromMetaspace(long metaspaceMethod) {
+HotSpotResolvedObjectTypeImpl holder = getHolder(metaspaceMethod);
+return holder.createMethod(metaspaceMethod);
+}
+HotSpotResolvedJavaMethodImpl(HotSpotResolvedObjectTypeImpl holder, long metaspaceMethod) {
+// It would be too much work to get the method name here so we fill it in later.
+super(null);
+this.metaspaceMethod = metaspaceMethod;
+this.holder = holder;
+HotSpotVMConfig config = config();
+final long constMethod = getConstMethod();
+/*
+* Get the constant pool from the metaspace method. Some methods (e.g. intrinsics for
+* signature-polymorphic method handle methods) have their own constant pool instead of the
+* one from their holder.
+*/
+final long metaspaceConstantPool = UNSAFE.getAddress(constMethod + config.constMethodConstantsOffset);
+if (metaspaceConstantPool == holder.getConstantPool().getMetaspaceConstantPool()) {
+this.constantPool = holder.getConstantPool();
+} else {
+this.constantPool = compilerToVM().getConstantPool(null, constMethod + config.constMethodConstantsOffset);
+}
+final int nameIndex = UNSAFE.getChar(constMethod + config.constMethodNameIndexOffset);
+this.name = constantPool.lookupUtf8(nameIndex);
+final int signatureIndex = UNSAFE.getChar(constMethod + config.constMethodSignatureIndexOffset);
+this.signature = (HotSpotSignature) constantPool.lookupSignature(signatureIndex);
+}
+/**
+* Returns a pointer to this method's constant method data structure (
+* {@code Method::_constMethod}). This pointer isn't wrapped since it should be safe to use it
+* within the context of this HotSpotResolvedJavaMethodImpl since the Method* and ConstMethod*
+* are kept alive as a pair.
+*
+* @return pointer to this method's ConstMethod
+*/
+private long getConstMethod() {
+assert metaspaceMethod != 0;
+return UNSAFE.getAddress(metaspaceMethod + config().methodConstMethodOffset);
+}
+@Override
+public boolean equals(Object obj) {
+if (this == obj) {
+return true;
+}
+if (obj instanceof HotSpotResolvedJavaMethodImpl) {
+HotSpotResolvedJavaMethodImpl that = (HotSpotResolvedJavaMethodImpl) obj;
+return that.metaspaceMethod == metaspaceMethod;
+}
+return false;
+}
+@Override
+public int hashCode() {
+return (int) metaspaceMethod;
+}
+/**
+* Returns this method's flags ({@code Method::_flags}).
+*
+* @return flags of this method
+*/
+private int getFlags() {
+return UNSAFE.getByte(metaspaceMethod + config().methodFlagsOffset);
+}
+/**
+* Returns this method's constant method flags ({@code ConstMethod::_flags}).
+*
+* @return flags of this method's ConstMethod
+*/
+private int getConstMethodFlags() {
+return UNSAFE.getChar(getConstMethod() + config().constMethodFlagsOffset);
+}
+@Override
+public HotSpotResolvedObjectTypeImpl getDeclaringClass() {
+return holder;
+}
+/**
+* Gets the address of the C++ Method object for this method.
+*/
+public Constant getMetaspaceMethodConstant() {
+return HotSpotMetaspaceConstantImpl.forMetaspaceObject(this, false);
+}
+public long getMetaspacePointer() {
+return metaspaceMethod;
+}
+@Override
+public Constant getEncoding() {
+return getMetaspaceMethodConstant();
+}
+/**
+* Gets the complete set of modifiers for this method which includes the JVM specification
+* modifiers as well as the HotSpot internal modifiers.
+*/
+public int getAllModifiers() {
+return UNSAFE.getInt(metaspaceMethod + config().methodAccessFlagsOffset);
+}
+@Override
+public int getModifiers() {
+return getAllModifiers() & ModifiersProvider.jvmMethodModifiers();
+}
+@Override
+public boolean canBeStaticallyBound() {
+return (isFinal() || isPrivate() || isStatic() || holder.isLeaf()) && isConcrete();
+}
+@Override
+public byte[] getCode() {
+if (getCodeSize() == 0) {
+return null;
+}
+if (code == null && holder.isLinked()) {
+code = compilerToVM().getBytecode(this);
+assert code.length == getCodeSize() : "expected: " + getCodeSize() + ", actual: " + code.length;
+}
+return code;
+}
+@Override
+public int getCodeSize() {
+return UNSAFE.getChar(getConstMethod() + config().constMethodCodeSizeOffset);
+}
+@Override
+public ExceptionHandler[] getExceptionHandlers() {
+final boolean hasExceptionTable = (getConstMethodFlags() & config().constMethodHasExceptionTable) != 0;
+if (!hasExceptionTable) {
+return new ExceptionHandler[0];
+}
+HotSpotVMConfig config = config();
+final int exceptionTableLength = compilerToVM().getExceptionTableLength(this);
+ExceptionHandler[] handlers = new ExceptionHandler[exceptionTableLength];
+long exceptionTableElement = compilerToVM().getExceptionTableStart(this);
+for (int i = 0; i < exceptionTableLength; i++) {
+final int startPc = UNSAFE.getChar(exceptionTableElement + config.exceptionTableElementStartPcOffset);
+final int endPc = UNSAFE.getChar(exceptionTableElement + config.exceptionTableElementEndPcOffset);
+final int handlerPc = UNSAFE.getChar(exceptionTableElement + config.exceptionTableElementHandlerPcOffset);
+int catchTypeIndex = UNSAFE.getChar(exceptionTableElement + config.exceptionTableElementCatchTypeIndexOffset);
+JavaType catchType;
+if (catchTypeIndex == 0) {
+catchType = null;
+} else {
+final int opcode = -1;  // opcode is not used
+catchType = constantPool.lookupType(catchTypeIndex, opcode);
+// Check for Throwable which catches everything.
+if (catchType instanceof HotSpotResolvedObjectTypeImpl) {
+HotSpotResolvedObjectTypeImpl resolvedType = (HotSpotResolvedObjectTypeImpl) catchType;
+if (resolvedType.mirror() == Throwable.class) {
+catchTypeIndex = 0;
+catchType = null;
+}
+}
+}
+handlers[i] = new ExceptionHandler(startPc, endPc, handlerPc, catchTypeIndex, catchType);
+// Go to the next ExceptionTableElement
+exceptionTableElement += config.exceptionTableElementSize;
+}
+return handlers;
+}
+/**
+* Returns true if this method has a {@code CallerSensitive} annotation.
+*
+* @return true if CallerSensitive annotation present, false otherwise
+*/
+public boolean isCallerSensitive() {
+return (getFlags() & config().methodFlagsCallerSensitive) != 0;
+}
+/**
+* Returns true if this method has a {@code ForceInline} annotation.
+*
+* @return true if ForceInline annotation present, false otherwise
+*/
+public boolean isForceInline() {
+return (getFlags() & config().methodFlagsForceInline) != 0;
+}
+/**
+* Returns true if this method has a {@code DontInline} annotation.
+*
+* @return true if DontInline annotation present, false otherwise
+*/
+public boolean isDontInline() {
+return (getFlags() & config().methodFlagsDontInline) != 0;
+}
+/**
+* Manually adds a DontInline annotation to this method.
+*/
+public void setNotInlineable() {
+compilerToVM().doNotInlineOrCompile(this);
+}
+/**
+* Returns true if this method is one of the special methods that is ignored by security stack
+* walks.
+*
+* @return true if special method ignored by security stack walks, false otherwise
+*/
+public boolean ignoredBySecurityStackWalk() {
+return compilerToVM().methodIsIgnoredBySecurityStackWalk(this);
+}
+@Override
+public boolean isClassInitializer() {
+return "<clinit>".equals(name) && isStatic();
+}
+@Override
+public boolean isConstructor() {
+return "<init>".equals(name) && !isStatic();
+}
+@Override
+public int getMaxLocals() {
+if (isAbstract() || isNative()) {
+return 0;
+}
+HotSpotVMConfig config = config();
+return UNSAFE.getChar(getConstMethod() + config.methodMaxLocalsOffset);
+}
+@Override
+public int getMaxStackSize() {
+if (isAbstract() || isNative()) {
+return 0;
+}
+HotSpotVMConfig config = config();
+return config.extraStackEntries + UNSAFE.getChar(getConstMethod() + config.constMethodMaxStackOffset);
+}
+@Override
+public StackTraceElement asStackTraceElement(int bci) {
+if (bci < 0 || bci >= getCodeSize()) {
+// HotSpot code can only construct stack trace elements for valid bcis
+StackTraceElement ste = compilerToVM().getStackTraceElement(this, 0);
+return new StackTraceElement(ste.getClassName(), ste.getMethodName(), ste.getFileName(), -1);
+}
+return compilerToVM().getStackTraceElement(this, bci);
+}
+public ResolvedJavaMethod uniqueConcreteMethod(HotSpotResolvedObjectType receiver) {
+if (receiver.isInterface()) {
+// Cannot trust interfaces. Because of:
+// interface I { void foo(); }
+// class A { public void foo() {} }
+// class B extends A implements I { }
+// class C extends B { public void foo() { } }
+// class D extends B { }
+// Would lead to identify C.foo() as the unique concrete method for I.foo() without
+// seeing A.foo().
+return null;
+}
+if (this.isDefault()) {
+// CHA for default methods doesn't work and may crash the VM
+return null;
+}
+return compilerToVM().findUniqueConcreteMethod(((HotSpotResolvedObjectTypeImpl) receiver), this);
+}
+@Override
+public HotSpotSignature getSignature() {
+return signature;
+}
+/**
+* Gets the value of {@code Method::_code}.
+*
+* @return the value of {@code Method::_code}
+*/
+private long getCompiledCode() {
+HotSpotVMConfig config = config();
+return UNSAFE.getAddress(metaspaceMethod + config.methodCodeOffset);
+}
+/**
+* Returns whether this method has compiled code.
+*
+* @return true if this method has compiled code, false otherwise
+*/
+public boolean hasCompiledCode() {
+return getCompiledCode() != 0L;
+}
+/**
+* @param level
+* @return true if the currently installed code was generated at {@code level}.
+*/
+public boolean hasCompiledCodeAtLevel(int level) {
+long compiledCode = getCompiledCode();
+if (compiledCode != 0) {
+return UNSAFE.getInt(compiledCode + config().nmethodCompLevelOffset) == level;
+}
+return false;
+}
+private static final String TraceMethodDataFilter = System.getProperty("jvmci.traceMethodDataFilter");
+@Override
+public ProfilingInfo getProfilingInfo(boolean includeNormal, boolean includeOSR) {
+ProfilingInfo info;
+if (UseProfilingInformation.getValue() && methodData == null) {
+long metaspaceMethodData = UNSAFE.getAddress(metaspaceMethod + config().methodDataOffset);
+if (metaspaceMethodData != 0) {
+methodData = new HotSpotMethodData(metaspaceMethodData, this);
+if (TraceMethodDataFilter != null && this.format("%H.%n").contains(TraceMethodDataFilter)) {
+System.out.println("Raw method data for " + this.format("%H.%n(%p)") + ":");
+System.out.println(methodData.toString());
+}
+}
+}
+if (methodData == null || (!methodData.hasNormalData() && !methodData.hasExtraData())) {
+// Be optimistic and return false for exceptionSeen. A methodDataOop is allocated in
+// case of a deoptimization.
+info = DefaultProfilingInfo.get(TriState.FALSE);
+} else {
+info = new HotSpotProfilingInfo(methodData, this, includeNormal, includeOSR);
+}
+return info;
+}
+@Override
+public void reprofile() {
+compilerToVM().reprofile(this);
+}
+@Override
+public ConstantPool getConstantPool() {
+return constantPool;
+}
+@Override
+public Annotation[][] getParameterAnnotations() {
+if (isConstructor()) {
+Constructor<?> javaConstructor = toJavaConstructor();
+return javaConstructor == null ? null : javaConstructor.getParameterAnnotations();
+}
+Method javaMethod = toJava();
+return javaMethod == null ? null : javaMethod.getParameterAnnotations();
+}
+@Override
+public Annotation[] getAnnotations() {
+if (isConstructor()) {
+Constructor<?> javaConstructor = toJavaConstructor();
+return javaConstructor == null ? new Annotation[0] : javaConstructor.getAnnotations();
+}
+Method javaMethod = toJava();
+return javaMethod == null ? new Annotation[0] : javaMethod.getAnnotations();
+}
+@Override
+public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
+if (isConstructor()) {
+Constructor<?> javaConstructor = toJavaConstructor();
+return javaConstructor == null ? null : javaConstructor.getAnnotation(annotationClass);
+}
+Method javaMethod = toJava();
+return javaMethod == null ? null : javaMethod.getAnnotation(annotationClass);
+}
+public boolean isDefault() {
+if (isConstructor()) {
+return false;
+}
+// Copied from java.lang.Method.isDefault()
+int mask = Modifier.ABSTRACT | Modifier.PUBLIC | Modifier.STATIC;
+return ((getModifiers() & mask) == Modifier.PUBLIC) && getDeclaringClass().isInterface();
+}
+@Override
+public Type[] getGenericParameterTypes() {
+if (isConstructor()) {
+Constructor<?> javaConstructor = toJavaConstructor();
+return javaConstructor == null ? null : javaConstructor.getGenericParameterTypes();
+}
+Method javaMethod = toJava();
+return javaMethod == null ? null : javaMethod.getGenericParameterTypes();
+}
+public Class<?>[] signatureToTypes() {
+Signature sig = getSignature();
+int count = sig.getParameterCount(false);
+Class<?>[] result = new Class<?>[count];
+for (int i = 0; i < result.length; ++i) {
+JavaType parameterType = sig.getParameterType(i, holder);
+HotSpotResolvedJavaType resolvedParameterType = (HotSpotResolvedJavaType) parameterType.resolve(holder);
+result[i] = resolvedParameterType.mirror();
+}
+return result;
+}
+private Method toJava() {
+if (toJavaCache != null) {
+return (Method) toJavaCache;
+}
+try {
+Method result = holder.mirror().getDeclaredMethod(name, signatureToTypes());
+toJavaCache = result;
+return result;
+} catch (NoSuchMethodException | NoClassDefFoundError e) {
+return null;
+}
+}
+private Constructor<?> toJavaConstructor() {
+if (toJavaCache != null) {
+return (Constructor<?>) toJavaCache;
+}
+try {
+Constructor<?> result = holder.mirror().getDeclaredConstructor(signatureToTypes());
+toJavaCache = result;
+return result;
+} catch (NoSuchMethodException | NoClassDefFoundError e) {
+return null;
+}
+}
+@Override
+public boolean canBeInlined() {
+if (isDontInline()) {
+return false;
+}
+return compilerToVM().canInlineMethod(this);
+}
+@Override
+public boolean shouldBeInlined() {
+if (isForceInline()) {
+return true;
+}
+return compilerToVM().shouldInlineMethod(this);
+}
+@Override
+public LineNumberTable getLineNumberTable() {
+final boolean hasLineNumberTable = (getConstMethodFlags() & config().constMethodHasLineNumberTable) != 0;
+if (!hasLineNumberTable) {
+return null;
+}
+long[] values = compilerToVM().getLineNumberTable(this);
+if (values == null || values.length == 0) {
+// Empty table so treat is as non-existent
+return null;
+}
+assert values.length % 2 == 0;
+int[] bci = new int[values.length / 2];
+int[] line = new int[values.length / 2];
+for (int i = 0; i < values.length / 2; i++) {
+bci[i] = (int) values[i * 2];
+line[i] = (int) values[i * 2 + 1];
+}
+return new LineNumberTableImpl(line, bci);
+}
+@Override
+public LocalVariableTable getLocalVariableTable() {
+final boolean hasLocalVariableTable = (getConstMethodFlags() & config().constMethodHasLocalVariableTable) != 0;
+if (!hasLocalVariableTable) {
+return null;
+}
+HotSpotVMConfig config = config();
+long localVariableTableElement = compilerToVM().getLocalVariableTableStart(this);
+final int localVariableTableLength = compilerToVM().getLocalVariableTableLength(this);
+Local[] locals = new Local[localVariableTableLength];
+for (int i = 0; i < localVariableTableLength; i++) {
+final int startBci = UNSAFE.getChar(localVariableTableElement + config.localVariableTableElementStartBciOffset);
+final int endBci = startBci + UNSAFE.getChar(localVariableTableElement + config.localVariableTableElementLengthOffset);
+final int nameCpIndex = UNSAFE.getChar(localVariableTableElement + config.localVariableTableElementNameCpIndexOffset);
+final int typeCpIndex = UNSAFE.getChar(localVariableTableElement + config.localVariableTableElementDescriptorCpIndexOffset);
+final int slot = UNSAFE.getChar(localVariableTableElement + config.localVariableTableElementSlotOffset);
+String localName = getConstantPool().lookupUtf8(nameCpIndex);
+String localType = getConstantPool().lookupUtf8(typeCpIndex);
+locals[i] = new LocalImpl(localName, runtime().lookupType(localType, holder, false), startBci, endBci, slot);
+// Go to the next LocalVariableTableElement
+localVariableTableElement += config.localVariableTableElementSize;
+}
+return new LocalVariableTableImpl(locals);
+}
+/**
+* Returns the offset of this method into the v-table. The method must have a v-table entry as
+* indicated by {@link #isInVirtualMethodTable(ResolvedJavaType)}, otherwise an exception is
+* thrown.
+*
+* @return the offset of this method into the v-table
+*/
+public int vtableEntryOffset(ResolvedJavaType resolved) {
+if (!isInVirtualMethodTable(resolved)) {
+throw new JVMCIError("%s does not have a vtable entry in type %s", this, resolved);
+}
+HotSpotVMConfig config = config();
+final int vtableIndex = getVtableIndex((HotSpotResolvedObjectTypeImpl) resolved);
+return config.instanceKlassVtableStartOffset + vtableIndex * config.vtableEntrySize + config.vtableEntryMethodOffset;
+}
+@Override
+public boolean isInVirtualMethodTable(ResolvedJavaType resolved) {
+if (resolved instanceof HotSpotResolvedObjectTypeImpl) {
+HotSpotResolvedObjectTypeImpl hotspotResolved = (HotSpotResolvedObjectTypeImpl) resolved;
+int vtableIndex = getVtableIndex(hotspotResolved);
+return vtableIndex >= 0 && vtableIndex < hotspotResolved.getVtableLength();
+}
+return false;
+}
+private int getVtableIndex(HotSpotResolvedObjectTypeImpl resolved) {
+if (!holder.isLinked()) {
+return config().invalidVtableIndex;
+}
+if (holder.isInterface()) {
+if (resolved.isInterface()) {
+return config().invalidVtableIndex;
+}
+return getVtableIndexForInterfaceMethod(resolved);
+}
+return getVtableIndex();
+}
+/**
+* Returns this method's virtual table index.
+*
+* @return virtual table index
+*/
+private int getVtableIndex() {
+assert !holder.isInterface();
+HotSpotVMConfig config = config();
+int result = UNSAFE.getInt(metaspaceMethod + config.methodVtableIndexOffset);
+assert result >= config.nonvirtualVtableIndex : "must be linked";
+return result;
+}
+private int getVtableIndexForInterfaceMethod(ResolvedJavaType resolved) {
+HotSpotResolvedObjectTypeImpl hotspotType = (HotSpotResolvedObjectTypeImpl) resolved;
+return compilerToVM().getVtableIndexForInterfaceMethod(hotspotType, this);
+}
+/**
+* The {@link SpeculationLog} for methods compiled by JVMCI hang off this per-declaring-type
+* {@link ClassValue}. The raw Method* value is safe to use as a key in the map as a) it is
+* never moves and b) we never read from it.
+* <p>
+* One implication is that we will preserve {@link SpeculationLog}s for methods that have been
+* redefined via class redefinition. It's tempting to periodically flush such logs but we cannot
+* read the JVM_ACC_IS_OBSOLETE bit (or anything else) via the raw pointer as obsoleted methods
+* are subject to clean up and deletion (see InstanceKlass::purge_previous_versions_internal).
+*/
+private static final ClassValue<Map<Long, SpeculationLog>> SpeculationLogs = new ClassValue<Map<Long, SpeculationLog>>() {
+@Override
+protected Map<Long, SpeculationLog> computeValue(java.lang.Class<?> type) {
+return new HashMap<>(4);
+}
+};
+public SpeculationLog getSpeculationLog() {
+Map<Long, SpeculationLog> map = SpeculationLogs.get(holder.mirror());
+synchronized (map) {
+SpeculationLog log = map.get(this.metaspaceMethod);
+if (log == null) {
+log = new HotSpotSpeculationLog();
+map.put(metaspaceMethod, log);
+}
+return log;
+}
+}
+public int intrinsicId() {
+HotSpotVMConfig config = config();
+return UNSAFE.getByte(metaspaceMethod + config.methodIntrinsicIdOffset) & 0xff;
+}
+@Override
+public JavaConstant invoke(JavaConstant receiver, JavaConstant[] arguments) {
+assert !isConstructor();
+Method javaMethod = toJava();
+javaMethod.setAccessible(true);
+Object[] objArguments = new Object[arguments.length];
+for (int i = 0; i < arguments.length; i++) {
+objArguments[i] = HotSpotObjectConstantImpl.asBoxedValue(arguments[i]);
+}
+Object objReceiver = receiver != null && !receiver.isNull() ? ((HotSpotObjectConstantImpl) receiver).object() : null;
+try {
+Object objResult = javaMethod.invoke(objReceiver, objArguments);
+return javaMethod.getReturnType() == void.class ? null : HotSpotObjectConstantImpl.forBoxedValue(getSignature().getReturnKind(), objResult);
+} catch (IllegalAccessException | InvocationTargetException ex) {
+throw new IllegalArgumentException(ex);
+}
+}
+/**
+* Allocates a compile id for this method by asking the VM for one.
+*
+* @param entryBCI entry bci
+* @return compile id
+*/
+public int allocateCompileId(int entryBCI) {
+return compilerToVM().allocateCompileId(this, entryBCI);
+}
+public boolean hasCodeAtLevel(int entryBCI, int level) {
+if (entryBCI == config().invocationEntryBci) {
+return hasCompiledCodeAtLevel(level);
+}
+return compilerToVM().hasCompiledCodeForOSR(this, entryBCI, level);
+}
+}

Mercurial > hg > graal-jvmci-8

comparison jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl.java @ 22672:1bbd4a7c274b