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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_SRC_CLASS_LINKER_H_
#define ART_SRC_CLASS_LINKER_H_
#include <string>
#include <utility>
#include <vector>
#include "dex_cache.h"
#include "dex_file.h"
#include "gtest/gtest.h"
#include "heap.h"
#include "macros.h"
#include "mutex.h"
#include "oat_file.h"
#include "object.h"
#include "safe_map.h"
namespace art {
class ClassLoader;
class ImageSpace;
class InternTable;
class ObjectLock;
template<class T> class SirtRef;
typedef bool (ClassVisitor)(Class* c, void* arg);
class ClassLinker {
public:
// Creates the class linker by bootstrapping from dex files.
static ClassLinker* CreateFromCompiler(const std::vector<const DexFile*>& boot_class_path,
InternTable* intern_table)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Creates the class linker from an image.
static ClassLinker* CreateFromImage(InternTable* intern_table)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
~ClassLinker();
// Finds a class by its descriptor, loading it if necessary.
// If class_loader is null, searches boot_class_path_.
Class* FindClass(const char* descriptor, ClassLoader* class_loader)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Class* FindSystemClass(const char* descriptor)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Define a new a class based on a ClassDef from a DexFile
Class* DefineClass(const StringPiece& descriptor, ClassLoader* class_loader,
const DexFile& dex_file, const DexFile::ClassDef& dex_class_def)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Finds a class by its descriptor, returning NULL if it isn't wasn't loaded
// by the given 'class_loader'.
Class* LookupClass(const char* descriptor, const ClassLoader* class_loader)
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Finds all the classes with the given descriptor, regardless of ClassLoader.
void LookupClasses(const char* descriptor, std::vector<Class*>& classes)
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Class* FindPrimitiveClass(char type) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// General class unloading is not supported, this is used to prune
// unwanted classes during image writing.
bool RemoveClass(const char* descriptor, const ClassLoader* class_loader)
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void DumpAllClasses(int flags) const
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void DumpForSigQuit(std::ostream& os) const
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_);
size_t NumLoadedClasses() const LOCKS_EXCLUDED(Locks::classlinker_classes_lock_);
// Resolve a String with the given index from the DexFile, storing the
// result in the DexCache. The referrer is used to identify the
// target DexCache and ClassLoader to use for resolution.
String* ResolveString(uint32_t string_idx, const AbstractMethod* referrer)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
String* resolved_string = referrer->GetDexCacheStrings()->Get(string_idx);
if (UNLIKELY(resolved_string == NULL)) {
Class* declaring_class = referrer->GetDeclaringClass();
DexCache* dex_cache = declaring_class->GetDexCache();
const DexFile& dex_file = *dex_cache->GetDexFile();
resolved_string = ResolveString(dex_file, string_idx, dex_cache);
}
return resolved_string;
}
// Resolve a String with the given index from the DexFile, storing the
// result in the DexCache.
String* ResolveString(const DexFile& dex_file, uint32_t string_idx, DexCache* dex_cache)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Resolve a Type with the given index from the DexFile, storing the
// result in the DexCache. The referrer is used to identity the
// target DexCache and ClassLoader to use for resolution.
Class* ResolveType(const DexFile& dex_file, uint16_t type_idx, const Class* referrer)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return ResolveType(dex_file,
type_idx,
referrer->GetDexCache(),
referrer->GetClassLoader());
}
// Resolve a Type with the given index from the DexFile, storing the
// result in the DexCache. The referrer is used to identify the
// target DexCache and ClassLoader to use for resolution.
Class* ResolveType(uint16_t type_idx, const AbstractMethod* referrer)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Class* resolved_type = referrer->GetDexCacheResolvedTypes()->Get(type_idx);
if (UNLIKELY(resolved_type == NULL)) {
Class* declaring_class = referrer->GetDeclaringClass();
DexCache* dex_cache = declaring_class->GetDexCache();
ClassLoader* class_loader = declaring_class->GetClassLoader();
const DexFile& dex_file = *dex_cache->GetDexFile();
resolved_type = ResolveType(dex_file, type_idx, dex_cache, class_loader);
}
return resolved_type;
}
Class* ResolveType(uint16_t type_idx, const Field* referrer)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Class* declaring_class = referrer->GetDeclaringClass();
DexCache* dex_cache = declaring_class->GetDexCache();
Class* resolved_type = dex_cache->GetResolvedType(type_idx);
if (UNLIKELY(resolved_type == NULL)) {
ClassLoader* class_loader = declaring_class->GetClassLoader();
const DexFile& dex_file = *dex_cache->GetDexFile();
resolved_type = ResolveType(dex_file, type_idx, dex_cache, class_loader);
}
return resolved_type;
}
// Resolve a type with the given ID from the DexFile, storing the
// result in DexCache. The ClassLoader is used to search for the
// type, since it may be referenced from but not contained within
// the given DexFile.
Class* ResolveType(const DexFile& dex_file,
uint16_t type_idx,
DexCache* dex_cache,
ClassLoader* class_loader)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Resolve a method with a given ID from the DexFile, storing the
// result in DexCache. The ClassLinker and ClassLoader are used as
// in ResolveType. What is unique is the method type argument which
// is used to determine if this method is a direct, static, or
// virtual method.
AbstractMethod* ResolveMethod(const DexFile& dex_file,
uint32_t method_idx,
DexCache* dex_cache,
ClassLoader* class_loader,
const AbstractMethod* referrer,
InvokeType type)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
AbstractMethod* ResolveMethod(uint32_t method_idx, const AbstractMethod* referrer, InvokeType type)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
AbstractMethod* resolved_method = referrer->GetDexCacheResolvedMethods()->Get(method_idx);
if (UNLIKELY(resolved_method == NULL || resolved_method->IsRuntimeMethod())) {
Class* declaring_class = referrer->GetDeclaringClass();
DexCache* dex_cache = declaring_class->GetDexCache();
ClassLoader* class_loader = declaring_class->GetClassLoader();
const DexFile& dex_file = *dex_cache->GetDexFile();
resolved_method = ResolveMethod(dex_file, method_idx, dex_cache, class_loader, referrer, type);
}
return resolved_method;
}
Field* ResolveField(uint32_t field_idx, const AbstractMethod* referrer, bool is_static)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
Field* resolved_field =
referrer->GetDeclaringClass()->GetDexCache()->GetResolvedField(field_idx);
if (UNLIKELY(resolved_field == NULL)) {
Class* declaring_class = referrer->GetDeclaringClass();
DexCache* dex_cache = declaring_class->GetDexCache();
ClassLoader* class_loader = declaring_class->GetClassLoader();
const DexFile& dex_file = *dex_cache->GetDexFile();
resolved_field = ResolveField(dex_file, field_idx, dex_cache, class_loader, is_static);
}
return resolved_field;
}
// Resolve a field with a given ID from the DexFile, storing the
// result in DexCache. The ClassLinker and ClassLoader are used as
// in ResolveType. What is unique is the is_static argument which is
// used to determine if we are resolving a static or non-static
// field.
Field* ResolveField(const DexFile& dex_file,
uint32_t field_idx,
DexCache* dex_cache,
ClassLoader* class_loader,
bool is_static)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Resolve a field with a given ID from the DexFile, storing the
// result in DexCache. The ClassLinker and ClassLoader are used as
// in ResolveType. No is_static argument is provided so that Java
// field resolution semantics are followed.
Field* ResolveFieldJLS(const DexFile& dex_file,
uint32_t field_idx,
DexCache* dex_cache,
ClassLoader* class_loader)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Get shorty from method index without resolution. Used to do handlerization.
const char* MethodShorty(uint32_t method_idx, AbstractMethod* referrer, uint32_t* length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Returns true on success, false if there's an exception pending.
// can_run_clinit=false allows the compiler to attempt to init a class,
// given the restriction that no <clinit> execution is possible.
bool EnsureInitialized(Class* c, bool can_run_clinit, bool can_init_fields)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Initializes classes that have instances in the image but that have
// <clinit> methods so they could not be initialized by the compiler.
void RunRootClinits() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void RegisterDexFile(const DexFile& dex_file)
LOCKS_EXCLUDED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void RegisterDexFile(const DexFile& dex_file, SirtRef<DexCache>& dex_cache)
LOCKS_EXCLUDED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void RegisterOatFile(const OatFile& oat_file)
LOCKS_EXCLUDED(dex_lock_);
const std::vector<const DexFile*>& GetBootClassPath() {
return boot_class_path_;
}
void VisitClasses(ClassVisitor* visitor, void* arg) const
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_);
// Less efficient variant of VisitClasses that doesn't hold the classlinker_classes_lock_
// when calling the visitor.
void VisitClassesWithoutClassesLock(ClassVisitor* visitor, void* arg) const
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_);
void VisitRoots(Heap::RootVisitor* visitor, void* arg)
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_, dex_lock_);
DexCache* FindDexCache(const DexFile& dex_file) const
LOCKS_EXCLUDED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool IsDexFileRegistered(const DexFile& dex_file) const
LOCKS_EXCLUDED(dex_lock_);
void FixupDexCaches(AbstractMethod* resolution_method) const
LOCKS_EXCLUDED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Generate an oat file from a dex file
bool GenerateOatFile(const std::string& dex_filename,
int oat_fd,
const std::string& oat_cache_filename);
const OatFile* FindOatFileFromOatLocation(const std::string& location)
LOCKS_EXCLUDED(dex_lock_);
const OatFile* FindOatFileFromOatLocationLocked(const std::string& location)
EXCLUSIVE_LOCKS_REQUIRED(dex_lock_);
// Finds the oat file for a dex location, generating the oat file if
// it is missing or out of date. Returns the DexFile from within the
// created oat file.
const DexFile* FindOrCreateOatFileForDexLocation(const std::string& dex_location,
const std::string& oat_location)
LOCKS_EXCLUDED(dex_lock_);
const DexFile* FindOrCreateOatFileForDexLocationLocked(const std::string& dex_location,
const std::string& oat_location)
EXCLUSIVE_LOCKS_REQUIRED(dex_lock_);
// Find a DexFile within an OatFile given a DexFile location. Note
// that this returns null if the location checksum of the DexFile
// does not match the OatFile.
const DexFile* FindDexFileInOatFileFromDexLocation(const std::string& location)
LOCKS_EXCLUDED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Returns true if oat file contains the dex file with the given location and checksum.
static bool VerifyOatFileChecksums(const OatFile* oat_file,
const std::string& dex_location,
uint32_t dex_location_checksum)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// TODO: replace this with multiple methods that allocate the correct managed type.
template <class T>
ObjectArray<T>* AllocObjectArray(Thread* self, size_t length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return ObjectArray<T>::Alloc(self, GetClassRoot(kObjectArrayClass), length);
}
ObjectArray<Class>* AllocClassArray(Thread* self, size_t length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return ObjectArray<Class>::Alloc(self, GetClassRoot(kClassArrayClass), length);
}
ObjectArray<String>* AllocStringArray(Thread* self, size_t length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return ObjectArray<String>::Alloc(self, GetClassRoot(kJavaLangStringArrayClass), length);
}
ObjectArray<AbstractMethod>* AllocAbstractMethodArray(Thread* self, size_t length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return ObjectArray<AbstractMethod>::Alloc(self,
GetClassRoot(kJavaLangReflectAbstractMethodArrayClass), length);
}
ObjectArray<AbstractMethod>* AllocMethodArray(Thread* self, size_t length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return ObjectArray<AbstractMethod>::Alloc(self,
GetClassRoot(kJavaLangReflectMethodArrayClass), length);
}
IfTable* AllocIfTable(Thread* self, size_t ifcount) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return down_cast<IfTable*>(
IfTable::Alloc(self, GetClassRoot(kObjectArrayClass), ifcount * IfTable::kMax));
}
ObjectArray<Field>* AllocFieldArray(Thread* self, size_t length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return ObjectArray<Field>::Alloc(self, GetClassRoot(kJavaLangReflectFieldArrayClass), length);
}
ObjectArray<StackTraceElement>* AllocStackTraceElementArray(Thread* self, size_t length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void VerifyClass(Class* klass) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool VerifyClassUsingOatFile(const DexFile& dex_file, Class* klass,
Class::Status& oat_file_class_status)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void ResolveClassExceptionHandlerTypes(const DexFile& dex_file, Class* klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void ResolveMethodExceptionHandlerTypes(const DexFile& dex_file, AbstractMethod* klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Class* CreateProxyClass(String* name, ObjectArray<Class>* interfaces, ClassLoader* loader,
ObjectArray<AbstractMethod>* methods, ObjectArray<ObjectArray<Class> >* throws)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
std::string GetDescriptorForProxy(const Class* proxy_class)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
AbstractMethod* FindMethodForProxy(const Class* proxy_class, const AbstractMethod* proxy_method)
LOCKS_EXCLUDED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Get the oat code for a method when its class isn't yet initialized
const void* GetOatCodeFor(const AbstractMethod* method)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Relocate the OatFiles (ELF images)
void RelocateExecutable() LOCKS_EXCLUDED(dex_lock_);
pid_t GetClassesLockOwner(); // For SignalCatcher.
pid_t GetDexLockOwner(); // For SignalCatcher.
bool IsDirty() const {
return is_dirty_;
}
void Dirty() {
is_dirty_ = true;
}
private:
explicit ClassLinker(InternTable*);
const OatFile::OatMethod GetOatMethodFor(const AbstractMethod* method)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Initialize class linker by bootstraping from dex files
void InitFromCompiler(const std::vector<const DexFile*>& boot_class_path)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Initialize class linker from one or more images.
void InitFromImage() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
OatFile* OpenOat(const ImageSpace* space)
LOCKS_EXCLUDED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
static void InitFromImageCallback(Object* obj, void* arg)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void FinishInit() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// For early bootstrapping by Init
Class* AllocClass(Thread* self, Class* java_lang_Class, size_t class_size)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Alloc* convenience functions to avoid needing to pass in Class*
// values that are known to the ClassLinker such as
// kObjectArrayClass and kJavaLangString etc.
Class* AllocClass(Thread* self, size_t class_size) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
DexCache* AllocDexCache(Thread* self, const DexFile& dex_file)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Field* AllocField(Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Method* AllocMethod(Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Constructor* AllocConstructor(Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Class* CreatePrimitiveClass(Thread* self, Primitive::Type type)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
return InitializePrimitiveClass(AllocClass(self, sizeof(Class)), type);
}
Class* InitializePrimitiveClass(Class* primitive_class, Primitive::Type type)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Class* CreateArrayClass(const std::string& descriptor, ClassLoader* class_loader)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void AppendToBootClassPath(const DexFile& dex_file)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void AppendToBootClassPath(const DexFile& dex_file, SirtRef<DexCache>& dex_cache)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void ConstructFieldMap(const DexFile& dex_file, const DexFile::ClassDef& dex_class_def,
Class* c, SafeMap<uint32_t, Field*>& field_map)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
size_t SizeOfClass(const DexFile& dex_file,
const DexFile::ClassDef& dex_class_def);
void LoadClass(const DexFile& dex_file,
const DexFile::ClassDef& dex_class_def,
SirtRef<Class>& klass,
ClassLoader* class_loader)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void LoadField(const DexFile& dex_file, const ClassDataItemIterator& it, SirtRef<Class>& klass,
SirtRef<Field>& dst) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
AbstractMethod* LoadMethod(Thread* self, const DexFile& dex_file,
const ClassDataItemIterator& dex_method,
SirtRef<Class>& klass) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void FixupStaticTrampolines(Class* klass) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Finds the associated oat class for a dex_file and descriptor
const OatFile::OatClass* GetOatClass(const DexFile& dex_file, const char* descriptor);
// Attempts to insert a class into a class table. Returns NULL if
// the class was inserted, otherwise returns an existing class with
// the same descriptor and ClassLoader.
Class* InsertClass(const StringPiece& descriptor, Class* klass, bool image_class)
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void RegisterDexFileLocked(const DexFile& dex_file, SirtRef<DexCache>& dex_cache)
EXCLUSIVE_LOCKS_REQUIRED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool IsDexFileRegisteredLocked(const DexFile& dex_file) const EXCLUSIVE_LOCKS_REQUIRED(dex_lock_);
void RegisterOatFileLocked(const OatFile& oat_file) EXCLUSIVE_LOCKS_REQUIRED(dex_lock_)
EXCLUSIVE_LOCKS_REQUIRED(dex_lock_);
bool InitializeClass(Class* klass, bool can_run_clinit, bool can_init_statics)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool WaitForInitializeClass(Class* klass, Thread* self, ObjectLock& lock);
bool ValidateSuperClassDescriptors(const Class* klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool InitializeSuperClass(Class* klass, bool can_run_clinit, bool can_init_fields)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// Initialize static fields, returns true if fields were initialized.
bool InitializeStaticFields(Class* klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool IsSameDescriptorInDifferentClassContexts(const char* descriptor,
const Class* klass1,
const Class* klass2)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool IsSameMethodSignatureInDifferentClassContexts(const AbstractMethod* descriptor,
const Class* klass1,
const Class* klass2)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LinkClass(SirtRef<Class>& klass, ObjectArray<Class>* interfaces)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LinkSuperClass(SirtRef<Class>& klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LoadSuperAndInterfaces(SirtRef<Class>& klass, const DexFile& dex_file)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LinkMethods(SirtRef<Class>& klass, ObjectArray<Class>* interfaces)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LinkVirtualMethods(SirtRef<Class>& klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LinkInterfaceMethods(SirtRef<Class>& klass, ObjectArray<Class>* interfaces)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LinkStaticFields(SirtRef<Class>& klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LinkInstanceFields(SirtRef<Class>& klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
bool LinkFields(SirtRef<Class>& klass, bool is_static)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void CreateReferenceInstanceOffsets(SirtRef<Class>& klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void CreateReferenceStaticOffsets(SirtRef<Class>& klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void CreateReferenceOffsets(SirtRef<Class>& klass, bool is_static,
uint32_t reference_offsets)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
// For use by ImageWriter to find DexCaches for its roots
const std::vector<DexCache*>& GetDexCaches() {
return dex_caches_;
}
const OatFile* FindOpenedOatFileForDexFile(const DexFile& dex_file)
LOCKS_EXCLUDED(dex_lock_);
const OatFile* FindOpenedOatFileFromDexLocation(const std::string& dex_location)
EXCLUSIVE_LOCKS_REQUIRED(dex_lock_);
const OatFile* FindOpenedOatFileFromOatLocation(const std::string& oat_location)
EXCLUSIVE_LOCKS_REQUIRED(dex_lock_);
const DexFile* VerifyAndOpenDexFileFromOatFile(const OatFile* oat_file,
const std::string& dex_location,
uint32_t dex_location_checksum)
EXCLUSIVE_LOCKS_REQUIRED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
AbstractMethod* CreateProxyConstructor(Thread* self, SirtRef<Class>& klass, Class* proxy_class)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
AbstractMethod* CreateProxyMethod(Thread* self, SirtRef<Class>& klass,
SirtRef<AbstractMethod>& prototype)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
std::vector<const DexFile*> boot_class_path_;
mutable Mutex dex_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
std::vector<DexCache*> dex_caches_ GUARDED_BY(dex_lock_);
std::vector<const OatFile*> oat_files_ GUARDED_BY(dex_lock_);
// multimap from a string hash code of a class descriptor to
// Class* instances. Results should be compared for a matching
// Class::descriptor_ and Class::class_loader_.
typedef std::multimap<size_t, Class*> Table;
Table image_classes_ GUARDED_BY(Locks::classlinker_classes_lock_);
Table classes_ GUARDED_BY(Locks::classlinker_classes_lock_);
Class* LookupClassLocked(const char* descriptor, const ClassLoader* class_loader,
size_t hash, const Table& classes)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
EXCLUSIVE_LOCKS_REQUIRED(Locks::classlinker_classes_lock_);
// indexes into class_roots_.
// needs to be kept in sync with class_roots_descriptors_.
enum ClassRoot {
kJavaLangClass,
kJavaLangObject,
kClassArrayClass,
kObjectArrayClass,
kJavaLangString,
kJavaLangDexCache,
kJavaLangRefReference,
kJavaLangReflectConstructor,
kJavaLangReflectField,
kJavaLangReflectAbstractMethod,
kJavaLangReflectMethod,
kJavaLangReflectProxy,
kJavaLangStringArrayClass,
kJavaLangReflectAbstractMethodArrayClass,
kJavaLangReflectFieldArrayClass,
kJavaLangReflectMethodArrayClass,
kJavaLangClassLoader,
kJavaLangThrowable,
kJavaLangClassNotFoundException,
kJavaLangStackTraceElement,
kPrimitiveBoolean,
kPrimitiveByte,
kPrimitiveChar,
kPrimitiveDouble,
kPrimitiveFloat,
kPrimitiveInt,
kPrimitiveLong,
kPrimitiveShort,
kPrimitiveVoid,
kBooleanArrayClass,
kByteArrayClass,
kCharArrayClass,
kDoubleArrayClass,
kFloatArrayClass,
kIntArrayClass,
kLongArrayClass,
kShortArrayClass,
kJavaLangStackTraceElementArrayClass,
kClassRootsMax,
};
ObjectArray<Class>* class_roots_;
Class* GetClassRoot(ClassRoot class_root)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
DCHECK(class_roots_ != NULL);
Class* klass = class_roots_->Get(class_root);
DCHECK(klass != NULL);
return klass;
}
void SetClassRoot(ClassRoot class_root, Class* klass)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
ObjectArray<Class>* GetClassRoots() {
DCHECK(class_roots_ != NULL);
return class_roots_;
}
static const char* class_roots_descriptors_[];
const char* GetClassRootDescriptor(ClassRoot class_root) {
const char* descriptor = class_roots_descriptors_[class_root];
CHECK(descriptor != NULL);
return descriptor;
}
IfTable* array_iftable_;
bool init_done_;
bool is_dirty_;
InternTable* intern_table_;
friend class CommonTest;
friend class ImageWriter; // for GetClassRoots
friend class ObjectTest;
FRIEND_TEST(ClassLinkerTest, ClassRootDescriptors);
FRIEND_TEST(DexCacheTest, Open);
FRIEND_TEST(ExceptionTest, FindExceptionHandler);
FRIEND_TEST(ObjectTest, AllocObjectArray);
DISALLOW_COPY_AND_ASSIGN(ClassLinker);
};
} // namespace art
#endif // ART_SRC_CLASS_LINKER_H_