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1480 lines
69 KiB
1480 lines
69 KiB
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_CLASS_LINKER_H_
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#define ART_RUNTIME_CLASS_LINKER_H_
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#include <list>
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#include <map>
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#include <set>
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#include <string>
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#include <type_traits>
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#include <utility>
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#include <vector>
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#include "base/enums.h"
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#include "base/hash_map.h"
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#include "base/mutex.h"
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#include "base/intrusive_forward_list.h"
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#include "base/locks.h"
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#include "base/macros.h"
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#include "dex/class_accessor.h"
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#include "dex/dex_file_types.h"
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#include "gc_root.h"
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#include "handle.h"
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#include "jni.h"
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#include "mirror/class.h"
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#include "mirror/object.h"
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#include "verifier/verifier_enums.h"
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namespace art {
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class ArtField;
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class ArtMethod;
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class ClassHierarchyAnalysis;
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enum class ClassRoot : uint32_t;
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class ClassTable;
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class DexFile;
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template<class T> class Handle;
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class ImtConflictTable;
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template<typename T> class LengthPrefixedArray;
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template<class T> class MutableHandle;
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class InternTable;
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class LinearAlloc;
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class OatFile;
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template<class T> class ObjectLock;
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class Runtime;
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class ScopedObjectAccessAlreadyRunnable;
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class SdkChecker;
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template<size_t kNumReferences> class PACKED(4) StackHandleScope;
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class Thread;
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enum VisitRootFlags : uint8_t;
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namespace dex {
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struct ClassDef;
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struct MethodHandleItem;
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} // namespace dex
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namespace gc {
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namespace space {
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class ImageSpace;
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} // namespace space
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} // namespace gc
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namespace linker {
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struct CompilationHelper;
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class ImageWriter;
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class OatWriter;
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} // namespace linker
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namespace mirror {
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class ClassLoader;
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class DexCache;
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class DexCachePointerArray;
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class DexCacheMethodHandlesTest_Open_Test;
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class DexCacheTest_Open_Test;
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class IfTable;
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class MethodHandle;
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class MethodHandlesLookup;
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class MethodType;
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template<class T> class ObjectArray;
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class StackTraceElement;
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template <typename T> struct NativeDexCachePair;
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using MethodDexCachePair = NativeDexCachePair<ArtMethod>;
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using MethodDexCacheType = std::atomic<MethodDexCachePair>;
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} // namespace mirror
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namespace verifier {
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class VerifierDeps;
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}
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class ClassVisitor {
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public:
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virtual ~ClassVisitor() {}
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// Return true to continue visiting.
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virtual bool operator()(ObjPtr<mirror::Class> klass) = 0;
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};
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template <typename Func>
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class ClassFuncVisitor final : public ClassVisitor {
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public:
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explicit ClassFuncVisitor(Func func) : func_(func) {}
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bool operator()(ObjPtr<mirror::Class> klass) override REQUIRES_SHARED(Locks::mutator_lock_) {
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return func_(klass);
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}
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private:
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Func func_;
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};
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class ClassLoaderVisitor {
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public:
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virtual ~ClassLoaderVisitor() {}
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virtual void Visit(ObjPtr<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::classlinker_classes_lock_, Locks::mutator_lock_) = 0;
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};
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template <typename Func>
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class ClassLoaderFuncVisitor final : public ClassLoaderVisitor {
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public:
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explicit ClassLoaderFuncVisitor(Func func) : func_(func) {}
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void Visit(ObjPtr<mirror::ClassLoader> cl) override REQUIRES_SHARED(Locks::mutator_lock_) {
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func_(cl);
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}
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private:
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Func func_;
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};
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class AllocatorVisitor {
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public:
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virtual ~AllocatorVisitor() {}
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// Return true to continue visiting.
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virtual bool Visit(LinearAlloc* alloc)
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REQUIRES_SHARED(Locks::classlinker_classes_lock_, Locks::mutator_lock_) = 0;
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};
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class ClassLinker {
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public:
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static constexpr bool kAppImageMayContainStrings = true;
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explicit ClassLinker(InternTable* intern_table,
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bool fast_class_not_found_exceptions = true);
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virtual ~ClassLinker();
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// Initialize class linker by bootstraping from dex files.
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bool InitWithoutImage(std::vector<std::unique_ptr<const DexFile>> boot_class_path,
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std::string* error_msg)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_);
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// Initialize class linker from one or more boot images.
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bool InitFromBootImage(std::string* error_msg)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_);
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// Add boot class path dex files that were not included in the boot image.
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// ClassLinker takes ownership of these dex files.
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void AddExtraBootDexFiles(Thread* self,
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std::vector<std::unique_ptr<const DexFile>>&& additional_dex_files)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Add an image space to the class linker, may fix up classloader fields and dex cache fields.
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// The dex files that were newly opened for the space are placed in the out argument
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// out_dex_files. Returns true if the operation succeeded.
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// The space must be already added to the heap before calling AddImageSpace since we need to
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// properly handle read barriers and object marking.
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bool AddImageSpace(gc::space::ImageSpace* space,
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Handle<mirror::ClassLoader> class_loader,
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std::vector<std::unique_ptr<const DexFile>>* out_dex_files,
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std::string* error_msg)
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REQUIRES(!Locks::dex_lock_)
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REQUIRES_SHARED(Locks::mutator_lock_);
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bool OpenImageDexFiles(gc::space::ImageSpace* space,
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std::vector<std::unique_ptr<const DexFile>>* out_dex_files,
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std::string* error_msg)
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REQUIRES(!Locks::dex_lock_)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Finds a class by its descriptor, loading it if necessary.
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// If class_loader is null, searches boot_class_path_.
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ObjPtr<mirror::Class> FindClass(Thread* self,
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const char* descriptor,
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Handle<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_);
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// Finds a class by its descriptor using the "system" class loader, ie by searching the
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// boot_class_path_.
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ObjPtr<mirror::Class> FindSystemClass(Thread* self, const char* descriptor)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_) {
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return FindClass(self, descriptor, ScopedNullHandle<mirror::ClassLoader>());
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}
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// Finds the array class given for the element class.
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ObjPtr<mirror::Class> FindArrayClass(Thread* self, ObjPtr<mirror::Class> element_class)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_);
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// Returns true if the class linker is initialized.
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bool IsInitialized() const {
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return init_done_;
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}
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// Define a new a class based on a ClassDef from a DexFile
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ObjPtr<mirror::Class> DefineClass(Thread* self,
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const char* descriptor,
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size_t hash,
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Handle<mirror::ClassLoader> class_loader,
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const DexFile& dex_file,
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const dex::ClassDef& dex_class_def)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_);
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// Finds a class by its descriptor, returning null if it isn't wasn't loaded
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// by the given 'class_loader'.
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ObjPtr<mirror::Class> LookupClass(Thread* self,
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const char* descriptor,
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ObjPtr<mirror::ClassLoader> class_loader)
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REQUIRES(!Locks::classlinker_classes_lock_)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Finds all the classes with the given descriptor, regardless of ClassLoader.
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void LookupClasses(const char* descriptor, std::vector<ObjPtr<mirror::Class>>& classes)
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REQUIRES(!Locks::classlinker_classes_lock_)
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REQUIRES_SHARED(Locks::mutator_lock_);
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ObjPtr<mirror::Class> LookupPrimitiveClass(char type) REQUIRES_SHARED(Locks::mutator_lock_);
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ObjPtr<mirror::Class> FindPrimitiveClass(char type) REQUIRES_SHARED(Locks::mutator_lock_);
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void DumpForSigQuit(std::ostream& os) REQUIRES(!Locks::classlinker_classes_lock_);
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size_t NumLoadedClasses()
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REQUIRES(!Locks::classlinker_classes_lock_)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Resolve a String with the given index from the DexFile associated with the given `referrer`,
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// storing the result in the DexCache. The `referrer` is used to identify the target DexCache
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// to use for resolution.
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ObjPtr<mirror::String> ResolveString(dex::StringIndex string_idx,
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ArtField* referrer)
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REQUIRES_SHARED(Locks::mutator_lock_);
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ObjPtr<mirror::String> ResolveString(dex::StringIndex string_idx,
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ArtMethod* referrer)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Resolve a String with the given index from the DexFile associated with the given DexCache,
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// storing the result in the DexCache.
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ObjPtr<mirror::String> ResolveString(dex::StringIndex string_idx,
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Handle<mirror::DexCache> dex_cache)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Find a String with the given index from the DexFile associated with the given DexCache,
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// storing the result in the DexCache if found. Return null if not found.
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ObjPtr<mirror::String> LookupString(dex::StringIndex string_idx,
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ObjPtr<mirror::DexCache> dex_cache)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Resolve a Type with the given index from the DexFile associated with the given `referrer`,
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// storing the result in the DexCache. The `referrer` is used to identify the target DexCache
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// and ClassLoader to use for resolution.
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ObjPtr<mirror::Class> ResolveType(dex::TypeIndex type_idx, ObjPtr<mirror::Class> referrer)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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ObjPtr<mirror::Class> ResolveType(dex::TypeIndex type_idx, ArtField* referrer)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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ObjPtr<mirror::Class> ResolveType(dex::TypeIndex type_idx, ArtMethod* referrer)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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// Resolve a type with the given index from the DexFile associated with the given DexCache
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// and ClassLoader, storing the result in DexCache. The ClassLoader is used to search for
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// the type, since it may be referenced from but not contained within the DexFile.
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ObjPtr<mirror::Class> ResolveType(dex::TypeIndex type_idx,
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Handle<mirror::DexCache> dex_cache,
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Handle<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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// Look up a resolved type with the given index from the DexFile associated with the given
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// `referrer`, storing the result in the DexCache. The `referrer` is used to identify the
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// target DexCache and ClassLoader to use for lookup.
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ObjPtr<mirror::Class> LookupResolvedType(dex::TypeIndex type_idx,
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ObjPtr<mirror::Class> referrer)
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REQUIRES_SHARED(Locks::mutator_lock_);
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ObjPtr<mirror::Class> LookupResolvedType(dex::TypeIndex type_idx, ArtField* referrer)
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REQUIRES_SHARED(Locks::mutator_lock_);
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ObjPtr<mirror::Class> LookupResolvedType(dex::TypeIndex type_idx, ArtMethod* referrer)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Look up a resolved type with the given index from the DexFile associated with the given
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// DexCache and ClassLoader. The ClassLoader is used to search for the type, since it may
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// be referenced from but not contained within the DexFile.
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ObjPtr<mirror::Class> LookupResolvedType(dex::TypeIndex type_idx,
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ObjPtr<mirror::DexCache> dex_cache,
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ObjPtr<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Look up a resolved type with the given descriptor associated with the given ClassLoader.
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ObjPtr<mirror::Class> LookupResolvedType(const char* descriptor,
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ObjPtr<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Determine whether a dex cache result should be trusted, or an IncompatibleClassChangeError
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// check and IllegalAccessError check should be performed even after a hit.
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enum class ResolveMode { // private.
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kNoChecks,
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kCheckICCEAndIAE
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};
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// Look up a previously resolved method with the given index.
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ArtMethod* LookupResolvedMethod(uint32_t method_idx,
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ObjPtr<mirror::DexCache> dex_cache,
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ObjPtr<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Find a method with the given index from class `klass`, and update the dex cache.
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ArtMethod* FindResolvedMethod(ObjPtr<mirror::Class> klass,
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ObjPtr<mirror::DexCache> dex_cache,
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ObjPtr<mirror::ClassLoader> class_loader,
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uint32_t method_idx)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Find a method using the wrong lookup mechanism. If `klass` is an interface,
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// search for a class method. If it is a class, search for an interface method.
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// This is useful when throwing IncompatibleClassChangeError.
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ArtMethod* FindIncompatibleMethod(ObjPtr<mirror::Class> klass,
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ObjPtr<mirror::DexCache> dex_cache,
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ObjPtr<mirror::ClassLoader> class_loader,
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uint32_t method_idx)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Resolve a method with a given ID from the DexFile associated with the given DexCache
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// and ClassLoader, storing the result in DexCache. The ClassLinker and ClassLoader are
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// used as in ResolveType. What is unique is the method type argument which is used to
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// determine if this method is a direct, static, or virtual method.
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template <ResolveMode kResolveMode>
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ArtMethod* ResolveMethod(uint32_t method_idx,
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Handle<mirror::DexCache> dex_cache,
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Handle<mirror::ClassLoader> class_loader,
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ArtMethod* referrer,
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InvokeType type)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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template <InvokeType type, ResolveMode kResolveMode>
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ArtMethod* GetResolvedMethod(uint32_t method_idx, ArtMethod* referrer)
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REQUIRES_SHARED(Locks::mutator_lock_);
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template <ResolveMode kResolveMode>
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ArtMethod* ResolveMethod(Thread* self, uint32_t method_idx, ArtMethod* referrer, InvokeType type)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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ArtMethod* ResolveMethodWithoutInvokeType(uint32_t method_idx,
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Handle<mirror::DexCache> dex_cache,
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Handle<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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ArtField* LookupResolvedField(uint32_t field_idx, ArtMethod* referrer, bool is_static)
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REQUIRES_SHARED(Locks::mutator_lock_);
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ArtField* ResolveField(uint32_t field_idx, ArtMethod* referrer, bool is_static)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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|
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// Resolve a field with a given ID from the DexFile associated with the given DexCache
|
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// and ClassLoader, storing the result in DexCache. The ClassLinker and ClassLoader
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// are used as in ResolveType. What is unique is the is_static argument which is used
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// to determine if we are resolving a static or non-static field.
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ArtField* ResolveField(uint32_t field_idx,
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Handle<mirror::DexCache> dex_cache,
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Handle<mirror::ClassLoader> class_loader,
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bool is_static)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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|
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// Resolve a field with a given ID from the DexFile associated with the given DexCache
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// and ClassLoader, storing the result in DexCache. The ClassLinker and ClassLoader
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// are used as in ResolveType. No is_static argument is provided so that Java
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// field resolution semantics are followed.
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ArtField* ResolveFieldJLS(uint32_t field_idx,
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Handle<mirror::DexCache> dex_cache,
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Handle<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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// Find a field with a given ID from the DexFile associated with the given DexCache
|
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// and ClassLoader, storing the result in DexCache. The declaring class is assumed
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// to have been already resolved into `klass`. The `is_static` argument is used to
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// determine if we are resolving a static or non-static field.
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ArtField* FindResolvedField(ObjPtr<mirror::Class> klass,
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ObjPtr<mirror::DexCache> dex_cache,
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ObjPtr<mirror::ClassLoader> class_loader,
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uint32_t field_idx,
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bool is_static)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Find a field with a given ID from the DexFile associated with the given DexCache
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// and ClassLoader, storing the result in DexCache. The declaring class is assumed
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// to have been already resolved into `klass`. No is_static argument is provided
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// so that Java field resolution semantics are followed.
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ArtField* FindResolvedFieldJLS(ObjPtr<mirror::Class> klass,
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ObjPtr<mirror::DexCache> dex_cache,
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ObjPtr<mirror::ClassLoader> class_loader,
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uint32_t field_idx)
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REQUIRES_SHARED(Locks::mutator_lock_);
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// Resolve a method type with a given ID from the DexFile associated with a given DexCache
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// and ClassLoader, storing the result in the DexCache.
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ObjPtr<mirror::MethodType> ResolveMethodType(Thread* self,
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dex::ProtoIndex proto_idx,
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Handle<mirror::DexCache> dex_cache,
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Handle<mirror::ClassLoader> class_loader)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
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|
|
ObjPtr<mirror::MethodType> ResolveMethodType(Thread* self,
|
|
dex::ProtoIndex proto_idx,
|
|
ArtMethod* referrer)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Resolve a method handle with a given ID from the DexFile. The
|
|
// result is not cached in the DexCache as the instance will only be
|
|
// used once in most circumstances.
|
|
ObjPtr<mirror::MethodHandle> ResolveMethodHandle(Thread* self,
|
|
uint32_t method_handle_idx,
|
|
ArtMethod* referrer)
|
|
REQUIRES_SHARED(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(Thread* self,
|
|
Handle<mirror::Class> c,
|
|
bool can_init_fields,
|
|
bool can_init_parents)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
|
|
|
|
// Initializes classes that have instances in the image but that have
|
|
// <clinit> methods so they could not be initialized by the compiler.
|
|
void RunRootClinits(Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
|
|
|
|
// Directly register an already existing dex cache. RegisterDexFile should be preferred since that
|
|
// reduplicates DexCaches when possible. The DexCache given to this function must already be fully
|
|
// initialized and not already registered.
|
|
void RegisterExistingDexCache(ObjPtr<mirror::DexCache> cache,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
ObjPtr<mirror::DexCache> RegisterDexFile(const DexFile& dex_file,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
const std::vector<const DexFile*>& GetBootClassPath() {
|
|
return boot_class_path_;
|
|
}
|
|
|
|
void VisitClasses(ClassVisitor* visitor)
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Less efficient variant of VisitClasses that copies the class_table_ into secondary storage
|
|
// so that it can visit individual classes without holding the doesn't hold the
|
|
// Locks::classlinker_classes_lock_. As the Locks::classlinker_classes_lock_ isn't held this code
|
|
// can race with insertion and deletion of classes while the visitor is being called.
|
|
void VisitClassesWithoutClassesLock(ClassVisitor* visitor)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
void VisitClassRoots(RootVisitor* visitor, VisitRootFlags flags)
|
|
REQUIRES(!Locks::classlinker_classes_lock_, !Locks::trace_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
void VisitRoots(RootVisitor* visitor, VisitRootFlags flags)
|
|
REQUIRES(!Locks::dex_lock_, !Locks::classlinker_classes_lock_, !Locks::trace_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
// Visits all dex-files accessible by any class-loader or the BCP.
|
|
template<typename Visitor>
|
|
void VisitKnownDexFiles(Thread* self, Visitor visitor) REQUIRES(Locks::mutator_lock_);
|
|
|
|
bool IsDexFileRegistered(Thread* self, const DexFile& dex_file)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
ObjPtr<mirror::DexCache> FindDexCache(Thread* self, const DexFile& dex_file)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
ClassTable* FindClassTable(Thread* self, ObjPtr<mirror::DexCache> dex_cache)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
LengthPrefixedArray<ArtField>* AllocArtFieldArray(Thread* self,
|
|
LinearAlloc* allocator,
|
|
size_t length);
|
|
|
|
LengthPrefixedArray<ArtMethod>* AllocArtMethodArray(Thread* self,
|
|
LinearAlloc* allocator,
|
|
size_t length);
|
|
|
|
// Convenience AllocClass() overload that uses mirror::Class::InitializeClassVisitor
|
|
// for the class initialization and uses the `java_lang_Class` from class roots
|
|
// instead of an explicit argument.
|
|
ObjPtr<mirror::Class> AllocClass(Thread* self, uint32_t class_size)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
// Setup the classloader, class def index, type idx so that we can insert this class in the class
|
|
// table.
|
|
void SetupClass(const DexFile& dex_file,
|
|
const dex::ClassDef& dex_class_def,
|
|
Handle<mirror::Class> klass,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void LoadClass(Thread* self,
|
|
const DexFile& dex_file,
|
|
const dex::ClassDef& dex_class_def,
|
|
Handle<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Link the class and place it into the class-table using the given descriptor. NB if the
|
|
// descriptor is null the class will not be placed in any class-table. This is useful implementing
|
|
// obsolete classes and should not be used otherwise.
|
|
bool LinkClass(Thread* self,
|
|
const char* descriptor,
|
|
Handle<mirror::Class> klass,
|
|
Handle<mirror::ObjectArray<mirror::Class>> interfaces,
|
|
MutableHandle<mirror::Class>* h_new_class_out)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::classlinker_classes_lock_);
|
|
|
|
ObjPtr<mirror::PointerArray> AllocPointerArray(Thread* self, size_t length)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
ObjPtr<mirror::IfTable> AllocIfTable(Thread* self, size_t ifcount)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
ObjPtr<mirror::ObjectArray<mirror::StackTraceElement>> AllocStackTraceElementArray(Thread* self,
|
|
size_t length)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
verifier::FailureKind VerifyClass(
|
|
Thread* self,
|
|
verifier::VerifierDeps* verifier_deps,
|
|
Handle<mirror::Class> klass,
|
|
verifier::HardFailLogMode log_level = verifier::HardFailLogMode::kLogNone)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
bool VerifyClassUsingOatFile(Thread* self,
|
|
const DexFile& dex_file,
|
|
Handle<mirror::Class> klass,
|
|
ClassStatus& oat_file_class_status)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
void ResolveClassExceptionHandlerTypes(Handle<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
void ResolveMethodExceptionHandlerTypes(ArtMethod* klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
ObjPtr<mirror::Class> CreateProxyClass(ScopedObjectAccessAlreadyRunnable& soa,
|
|
jstring name,
|
|
jobjectArray interfaces,
|
|
jobject loader,
|
|
jobjectArray methods,
|
|
jobjectArray throws)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Get the oat code for a method when its class isn't yet initialized.
|
|
const void* GetQuickOatCodeFor(ArtMethod* method)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
pid_t GetClassesLockOwner(); // For SignalCatcher.
|
|
pid_t GetDexLockOwner(); // For SignalCatcher.
|
|
|
|
// Is the given entry point quick code to run the resolution stub?
|
|
bool IsQuickResolutionStub(const void* entry_point) const;
|
|
|
|
// Is the given entry point quick code to bridge into the interpreter?
|
|
bool IsQuickToInterpreterBridge(const void* entry_point) const;
|
|
|
|
// Is the given entry point quick code to run the generic JNI stub?
|
|
bool IsQuickGenericJniStub(const void* entry_point) const;
|
|
|
|
// Is the given entry point the JNI dlsym lookup stub?
|
|
bool IsJniDlsymLookupStub(const void* entry_point) const;
|
|
|
|
// Is the given entry point the JNI dlsym lookup critical stub?
|
|
bool IsJniDlsymLookupCriticalStub(const void* entry_point) const;
|
|
|
|
// Is the given entry point the nterp trampoline?
|
|
bool IsNterpTrampoline(const void* entry_point) const {
|
|
return nterp_trampoline_ == entry_point;
|
|
}
|
|
|
|
const void* GetQuickToInterpreterBridgeTrampoline() const {
|
|
return quick_to_interpreter_bridge_trampoline_;
|
|
}
|
|
|
|
InternTable* GetInternTable() const {
|
|
return intern_table_;
|
|
}
|
|
|
|
// Set the entrypoints up for method to the enter the interpreter.
|
|
void SetEntryPointsToInterpreter(ArtMethod* method) const
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Set the entrypoints up for an obsolete method.
|
|
void SetEntryPointsForObsoleteMethod(ArtMethod* method) const
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// 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.
|
|
ObjPtr<mirror::Class> InsertClass(const char* descriptor,
|
|
ObjPtr<mirror::Class> klass,
|
|
size_t hash)
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Add an oat file with .bss GC roots to be visited again at the end of GC
|
|
// for collector types that need it.
|
|
void WriteBarrierForBootOatFileBssRoots(const OatFile* oat_file)
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
|
|
ObjPtr<mirror::ObjectArray<mirror::Class>> GetClassRoots() REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Move the class table to the pre-zygote table to reduce memory usage. This works by ensuring
|
|
// that no more classes are ever added to the pre zygote table which makes it that the pages
|
|
// always remain shared dirty instead of private dirty.
|
|
void MoveClassTableToPreZygote()
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Creates a GlobalRef PathClassLoader or DelegateLastClassLoader (specified by loader_class)
|
|
// that can be used to load classes from the given dex files. The parent of the class loader
|
|
// will be set to `parent_loader`. If `parent_loader` is null the parent will be
|
|
// the boot class loader.
|
|
// If class_loader points to a different class than PathClassLoader or DelegateLastClassLoader
|
|
// this method will abort.
|
|
// Note: the objects are not completely set up. Do not use this outside of tests and the compiler.
|
|
jobject CreateWellKnownClassLoader(Thread* self,
|
|
const std::vector<const DexFile*>& dex_files,
|
|
jclass loader_class,
|
|
jobject parent_loader,
|
|
jobject shared_libraries = nullptr)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
// Calls CreateWellKnownClassLoader(self,
|
|
// dex_files,
|
|
// WellKnownClasses::dalvik_system_PathClassLoader,
|
|
// nullptr)
|
|
jobject CreatePathClassLoader(Thread* self, const std::vector<const DexFile*>& dex_files)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
// Non-GlobalRef version of CreateWellKnownClassLoader
|
|
ObjPtr<mirror::ClassLoader> CreateWellKnownClassLoader(
|
|
Thread* self,
|
|
const std::vector<const DexFile*>& dex_files,
|
|
Handle<mirror::Class> loader_class,
|
|
Handle<mirror::ClassLoader> parent_loader,
|
|
Handle<mirror::ObjectArray<mirror::ClassLoader>> shared_libraries)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
PointerSize GetImagePointerSize() const {
|
|
return image_pointer_size_;
|
|
}
|
|
|
|
// Clear the ArrayClass cache. This is necessary when cleaning up for the image, as the cache
|
|
// entries are roots, but potentially not image classes.
|
|
void DropFindArrayClassCache() REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Clean up class loaders, this needs to happen after JNI weak globals are cleared.
|
|
void CleanupClassLoaders()
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Unlike GetOrCreateAllocatorForClassLoader, GetAllocatorForClassLoader asserts that the
|
|
// allocator for this class loader is already created.
|
|
LinearAlloc* GetAllocatorForClassLoader(ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Return the linear alloc for a class loader if it is already allocated, otherwise allocate and
|
|
// set it. TODO: Consider using a lock other than classlinker_classes_lock_.
|
|
LinearAlloc* GetOrCreateAllocatorForClassLoader(ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// May be called with null class_loader due to legacy code. b/27954959
|
|
void InsertDexFileInToClassLoader(ObjPtr<mirror::Object> dex_file,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
static bool ShouldUseInterpreterEntrypoint(ArtMethod* method, const void* quick_code)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
static bool IsBootClassLoader(ScopedObjectAccessAlreadyRunnable& soa,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
ArtMethod* AddMethodToConflictTable(ObjPtr<mirror::Class> klass,
|
|
ArtMethod* conflict_method,
|
|
ArtMethod* interface_method,
|
|
ArtMethod* method)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Create a conflict table with a specified capacity.
|
|
ImtConflictTable* CreateImtConflictTable(size_t count, LinearAlloc* linear_alloc);
|
|
|
|
// Static version for when the class linker is not yet created.
|
|
static ImtConflictTable* CreateImtConflictTable(size_t count,
|
|
LinearAlloc* linear_alloc,
|
|
PointerSize pointer_size);
|
|
|
|
|
|
// Create the IMT and conflict tables for a class.
|
|
void FillIMTAndConflictTables(ObjPtr<mirror::Class> klass) REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Visit all of the class tables. This is used by dex2oat to allow pruning dex caches.
|
|
template <class Visitor>
|
|
void VisitClassTables(const Visitor& visitor)
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Visit all of the allocators that belong to classloaders except boot classloader.
|
|
// This is used by 616-cha-unloading test to confirm memory reuse.
|
|
void VisitAllocators(AllocatorVisitor* visitor) const
|
|
REQUIRES_SHARED(Locks::classlinker_classes_lock_, Locks::mutator_lock_);
|
|
|
|
// Throw the class initialization failure recorded when first trying to initialize the given
|
|
// class.
|
|
void ThrowEarlierClassFailure(ObjPtr<mirror::Class> c,
|
|
bool wrap_in_no_class_def = false,
|
|
bool log = false)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
// Get the actual holding class for a copied method. Pretty slow, don't call often.
|
|
ObjPtr<mirror::Class> GetHoldingClassOfCopiedMethod(ArtMethod* method)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Returns null if not found.
|
|
// This returns a pointer to the class-table, without requiring any locking - including the
|
|
// boot class-table. It is the caller's responsibility to access this under lock, if required.
|
|
ClassTable* ClassTableForClassLoader(ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
NO_THREAD_SAFETY_ANALYSIS;
|
|
|
|
void AppendToBootClassPath(Thread* self, const DexFile* dex_file)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
// Visit all of the class loaders in the class linker.
|
|
void VisitClassLoaders(ClassLoaderVisitor* visitor) const
|
|
REQUIRES_SHARED(Locks::classlinker_classes_lock_, Locks::mutator_lock_);
|
|
|
|
// Checks that a class and its superclass from another class loader have the same virtual methods.
|
|
bool ValidateSuperClassDescriptors(Handle<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
ClassHierarchyAnalysis* GetClassHierarchyAnalysis() {
|
|
return cha_.get();
|
|
}
|
|
|
|
void MakeInitializedClassesVisiblyInitialized(Thread* self, bool wait);
|
|
|
|
// Registers the native method and returns the new entry point. NB The returned entry point
|
|
// might be different from the native_method argument if some MethodCallback modifies it.
|
|
const void* RegisterNative(Thread* self, ArtMethod* method, const void* native_method)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) WARN_UNUSED;
|
|
|
|
// Unregister native code for a method.
|
|
void UnregisterNative(Thread* self, ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Get the registered native method entrypoint, if any, otherwise null.
|
|
const void* GetRegisteredNative(Thread* self, ArtMethod* method)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!critical_native_code_with_clinit_check_lock_);
|
|
|
|
struct DexCacheData {
|
|
// Construct an invalid data object.
|
|
DexCacheData()
|
|
: weak_root(nullptr),
|
|
dex_file(nullptr),
|
|
class_table(nullptr) { }
|
|
|
|
// Check if the data is valid.
|
|
bool IsValid() const {
|
|
return dex_file != nullptr;
|
|
}
|
|
|
|
// Weak root to the DexCache. Note: Do not decode this unnecessarily or else class unloading may
|
|
// not work properly.
|
|
jweak weak_root;
|
|
// The following field caches the DexCache's field here to avoid unnecessary jweak decode that
|
|
// triggers read barriers (and marks them alive unnecessarily and messes with class unloading.)
|
|
const DexFile* dex_file;
|
|
// Identify the associated class loader's class table. This is used to make sure that
|
|
// the Java call to native DexCache.setResolvedType() inserts the resolved type in that
|
|
// class table. It is also used to make sure we don't register the same dex cache with
|
|
// multiple class loaders.
|
|
ClassTable* class_table;
|
|
};
|
|
|
|
// Forces a class to be marked as initialized without actually running initializers. Should only
|
|
// be used by plugin code when creating new classes directly.
|
|
void ForceClassInitialized(Thread* self, Handle<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
|
|
|
|
// Verifies if the method is accesible according to the SdkChecker (if installed).
|
|
virtual bool DenyAccessBasedOnPublicSdk(ArtMethod* art_method) const
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
// Verifies if the field is accesible according to the SdkChecker (if installed).
|
|
virtual bool DenyAccessBasedOnPublicSdk(ArtField* art_field) const
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
// Verifies if the descriptor is accesible according to the SdkChecker (if installed).
|
|
virtual bool DenyAccessBasedOnPublicSdk(const char* type_descriptor) const;
|
|
// Enable or disable public sdk checks.
|
|
virtual void SetEnablePublicSdkChecks(bool enabled);
|
|
void RemoveDexFromCaches(const DexFile& dex_file);
|
|
|
|
protected:
|
|
virtual bool InitializeClass(Thread* self,
|
|
Handle<mirror::Class> klass,
|
|
bool can_run_clinit,
|
|
bool can_init_parents)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
virtual verifier::FailureKind PerformClassVerification(Thread* self,
|
|
verifier::VerifierDeps* verifier_deps,
|
|
Handle<mirror::Class> klass,
|
|
verifier::HardFailLogMode log_level,
|
|
std::string* error_msg)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
virtual bool CanAllocClass() REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Locks::dex_lock_) {
|
|
return true;
|
|
}
|
|
|
|
virtual bool IsUpdatableBootClassPathDescriptor(const char* descriptor);
|
|
|
|
private:
|
|
class LinkFieldsHelper;
|
|
class LinkInterfaceMethodsHelper;
|
|
class MethodTranslation;
|
|
class VisiblyInitializedCallback;
|
|
|
|
struct ClassLoaderData {
|
|
jweak weak_root; // Weak root to enable class unloading.
|
|
ClassTable* class_table;
|
|
LinearAlloc* allocator;
|
|
};
|
|
|
|
void VisiblyInitializedCallbackDone(Thread* self, VisiblyInitializedCallback* callback);
|
|
VisiblyInitializedCallback* MarkClassInitialized(Thread* self, Handle<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Ensures that the supertype of 'klass' ('supertype') is verified. Returns false and throws
|
|
// appropriate exceptions if verification failed hard. Returns true for successful verification or
|
|
// soft-failures.
|
|
bool AttemptSupertypeVerification(Thread* self,
|
|
verifier::VerifierDeps* verifier_deps,
|
|
Handle<mirror::Class> klass,
|
|
Handle<mirror::Class> supertype)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void DeleteClassLoader(Thread* self, const ClassLoaderData& data, bool cleanup_cha)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void VisitClassesInternal(ClassVisitor* visitor)
|
|
REQUIRES_SHARED(Locks::classlinker_classes_lock_, Locks::mutator_lock_);
|
|
|
|
// Returns the number of zygote and image classes.
|
|
size_t NumZygoteClasses() const
|
|
REQUIRES(Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Returns the number of non zygote nor image classes.
|
|
size_t NumNonZygoteClasses() const
|
|
REQUIRES(Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void FinishInit(Thread* self)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
|
|
|
|
// If we do not allow moving classes (`art::kMovingClass` is false) or if
|
|
// parameter `kMovable` is false (or both), the class object is allocated in
|
|
// the non-moving space.
|
|
template <bool kMovable = true, class PreFenceVisitor>
|
|
ObjPtr<mirror::Class> AllocClass(Thread* self,
|
|
ObjPtr<mirror::Class> java_lang_Class,
|
|
uint32_t class_size,
|
|
const PreFenceVisitor& pre_fence_visitor)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
// Convenience AllocClass() overload that uses mirror::Class::InitializeClassVisitor
|
|
// for the class initialization.
|
|
template <bool kMovable = true>
|
|
ObjPtr<mirror::Class> AllocClass(Thread* self,
|
|
ObjPtr<mirror::Class> java_lang_Class,
|
|
uint32_t class_size)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
// Allocate a primitive array class and store it in appropriate class root.
|
|
void AllocPrimitiveArrayClass(Thread* self,
|
|
ClassRoot primitive_root,
|
|
ClassRoot array_root)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
// Finish setup of an array class.
|
|
void FinishArrayClassSetup(ObjPtr<mirror::Class> array_class)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
// Finish setup of a core array class (Object[], Class[], String[] and
|
|
// primitive arrays) and insert it into the class table.
|
|
void FinishCoreArrayClassSetup(ClassRoot array_root)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
ObjPtr<mirror::DexCache> AllocDexCache(Thread* self, const DexFile& dex_file)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
// Used for tests and AppendToBootClassPath.
|
|
ObjPtr<mirror::DexCache> AllocAndInitializeDexCache(Thread* self,
|
|
const DexFile& dex_file,
|
|
LinearAlloc* linear_alloc)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
// Create a primitive class and store it in the appropriate class root.
|
|
void CreatePrimitiveClass(Thread* self, Primitive::Type type, ClassRoot primitive_root)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Roles::uninterruptible_);
|
|
|
|
ObjPtr<mirror::Class> CreateArrayClass(Thread* self,
|
|
const char* descriptor,
|
|
size_t hash,
|
|
Handle<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
|
|
|
|
void AppendToBootClassPath(const DexFile* dex_file, ObjPtr<mirror::DexCache> dex_cache)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
// Precomputes size needed for Class, in the case of a non-temporary class this size must be
|
|
// sufficient to hold all static fields.
|
|
uint32_t SizeOfClassWithoutEmbeddedTables(const DexFile& dex_file,
|
|
const dex::ClassDef& dex_class_def);
|
|
|
|
void LoadField(const ClassAccessor::Field& field, Handle<mirror::Class> klass, ArtField* dst)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void LoadMethod(const DexFile& dex_file,
|
|
const ClassAccessor::Method& method,
|
|
Handle<mirror::Class> klass,
|
|
ArtMethod* dst)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void FixupStaticTrampolines(Thread* self, ObjPtr<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Finds a class in a Path- or DexClassLoader, loading it if necessary without using JNI. Hash
|
|
// function is supposed to be ComputeModifiedUtf8Hash(descriptor). Returns true if the
|
|
// class-loader chain could be handled, false otherwise, i.e., a non-supported class-loader
|
|
// was encountered while walking the parent chain (currently only BootClassLoader and
|
|
// PathClassLoader are supported).
|
|
bool FindClassInBaseDexClassLoader(ScopedObjectAccessAlreadyRunnable& soa,
|
|
Thread* self,
|
|
const char* descriptor,
|
|
size_t hash,
|
|
Handle<mirror::ClassLoader> class_loader,
|
|
/*out*/ ObjPtr<mirror::Class>* result)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
bool FindClassInSharedLibraries(ScopedObjectAccessAlreadyRunnable& soa,
|
|
Thread* self,
|
|
const char* descriptor,
|
|
size_t hash,
|
|
Handle<mirror::ClassLoader> class_loader,
|
|
/*out*/ ObjPtr<mirror::Class>* result)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
// Finds the class in the classpath of the given class loader. It only searches the class loader
|
|
// dex files and does not recurse into its parent.
|
|
// The method checks that the provided class loader is either a PathClassLoader or a
|
|
// DexClassLoader.
|
|
// If the class is found the method returns the resolved class. Otherwise it returns null.
|
|
ObjPtr<mirror::Class> FindClassInBaseDexClassLoaderClassPath(
|
|
ScopedObjectAccessAlreadyRunnable& soa,
|
|
const char* descriptor,
|
|
size_t hash,
|
|
Handle<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
// Finds the class in the boot class loader.
|
|
// If the class is found the method returns the resolved class. Otherwise it returns null.
|
|
ObjPtr<mirror::Class> FindClassInBootClassLoaderClassPath(Thread* self,
|
|
const char* descriptor,
|
|
size_t hash)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
// Implementation of LookupResolvedType() called when the type was not found in the dex cache.
|
|
ObjPtr<mirror::Class> DoLookupResolvedType(dex::TypeIndex type_idx,
|
|
ObjPtr<mirror::Class> referrer)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
ObjPtr<mirror::Class> DoLookupResolvedType(dex::TypeIndex type_idx,
|
|
ObjPtr<mirror::DexCache> dex_cache,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Implementation of ResolveString() called when the string was not found in the dex cache.
|
|
ObjPtr<mirror::String> DoResolveString(dex::StringIndex string_idx,
|
|
ObjPtr<mirror::DexCache> dex_cache)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
ObjPtr<mirror::String> DoResolveString(dex::StringIndex string_idx,
|
|
Handle<mirror::DexCache> dex_cache)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Implementation of LookupString() called when the string was not found in the dex cache.
|
|
ObjPtr<mirror::String> DoLookupString(dex::StringIndex string_idx,
|
|
ObjPtr<mirror::DexCache> dex_cache)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Implementation of ResolveType() called when the type was not found in the dex cache. May be
|
|
// used with ArtField*, ArtMethod* or ObjPtr<Class>.
|
|
template <typename RefType>
|
|
ObjPtr<mirror::Class> DoResolveType(dex::TypeIndex type_idx, RefType referrer)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
|
|
ObjPtr<mirror::Class> DoResolveType(dex::TypeIndex type_idx,
|
|
Handle<mirror::DexCache> dex_cache,
|
|
Handle<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_, !Roles::uninterruptible_);
|
|
|
|
// Finds a class by its descriptor, returning NULL if it isn't wasn't loaded
|
|
// by the given 'class_loader'. Uses the provided hash for the descriptor.
|
|
ObjPtr<mirror::Class> LookupClass(Thread* self,
|
|
const char* descriptor,
|
|
size_t hash,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES(!Locks::classlinker_classes_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Find a field by its field index.
|
|
ArtField* LookupResolvedField(uint32_t field_idx,
|
|
ObjPtr<mirror::DexCache> dex_cache,
|
|
ObjPtr<mirror::ClassLoader> class_loader,
|
|
bool is_static)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void RegisterDexFileLocked(const DexFile& dex_file,
|
|
ObjPtr<mirror::DexCache> dex_cache,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES(Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
const DexCacheData* FindDexCacheDataLocked(const DexFile& dex_file)
|
|
REQUIRES(Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
static ObjPtr<mirror::DexCache> DecodeDexCacheLocked(Thread* self, const DexCacheData* data)
|
|
REQUIRES_SHARED(Locks::dex_lock_, Locks::mutator_lock_);
|
|
bool IsSameClassLoader(ObjPtr<mirror::DexCache> dex_cache,
|
|
const DexCacheData* data,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::dex_lock_, Locks::mutator_lock_);
|
|
|
|
bool InitializeDefaultInterfaceRecursive(Thread* self,
|
|
Handle<mirror::Class> klass,
|
|
bool can_run_clinit,
|
|
bool can_init_parents)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
bool WaitForInitializeClass(Handle<mirror::Class> klass,
|
|
Thread* self,
|
|
ObjectLock<mirror::Class>& lock);
|
|
|
|
bool IsSameDescriptorInDifferentClassContexts(Thread* self,
|
|
const char* descriptor,
|
|
Handle<mirror::ClassLoader> class_loader1,
|
|
Handle<mirror::ClassLoader> class_loader2)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
bool IsSameMethodSignatureInDifferentClassContexts(Thread* self,
|
|
ArtMethod* method,
|
|
ObjPtr<mirror::Class> klass1,
|
|
ObjPtr<mirror::Class> klass2)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
bool LinkSuperClass(Handle<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
bool LoadSuperAndInterfaces(Handle<mirror::Class> klass, const DexFile& dex_file)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
bool LinkMethods(Thread* self,
|
|
Handle<mirror::Class> klass,
|
|
Handle<mirror::ObjectArray<mirror::Class>> interfaces,
|
|
bool* out_new_conflict,
|
|
ArtMethod** out_imt)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
ObjPtr<mirror::MethodHandle> ResolveMethodHandleForField(
|
|
Thread* self,
|
|
const dex::MethodHandleItem& method_handle,
|
|
ArtMethod* referrer) REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
ObjPtr<mirror::MethodHandle> ResolveMethodHandleForMethod(
|
|
Thread* self,
|
|
const dex::MethodHandleItem& method_handle,
|
|
ArtMethod* referrer) REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Links the virtual methods for the given class and records any default methods that will need to
|
|
// be updated later.
|
|
//
|
|
// Arguments:
|
|
// * self - The current thread.
|
|
// * klass - class, whose vtable will be filled in.
|
|
// * default_translations - Vtable index to new method map.
|
|
// Any vtable entries that need to be updated with new default methods
|
|
// are stored into the default_translations map. The default_translations
|
|
// map is keyed on the vtable index that needs to be updated. We use this
|
|
// map because if we override a default method with another default
|
|
// method we need to update the vtable to point to the new method.
|
|
// Unfortunately since we copy the ArtMethod* we cannot just do a simple
|
|
// scan, we therefore store the vtable index's that might need to be
|
|
// updated with the method they will turn into.
|
|
// TODO This whole default_translations thing is very dirty. There should be a better way.
|
|
bool LinkVirtualMethods(
|
|
Thread* self,
|
|
Handle<mirror::Class> klass,
|
|
/*out*/HashMap<size_t, MethodTranslation>* default_translations)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Sets up the interface lookup table (IFTable) in the correct order to allow searching for
|
|
// default methods.
|
|
bool SetupInterfaceLookupTable(Thread* self,
|
|
Handle<mirror::Class> klass,
|
|
Handle<mirror::ObjectArray<mirror::Class>> interfaces)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
|
|
enum class DefaultMethodSearchResult {
|
|
kDefaultFound,
|
|
kAbstractFound,
|
|
kDefaultConflict
|
|
};
|
|
|
|
// Find the default method implementation for 'interface_method' in 'klass', if one exists.
|
|
//
|
|
// Arguments:
|
|
// * self - The current thread.
|
|
// * target_method - The method we are trying to find a default implementation for.
|
|
// * klass - The class we are searching for a definition of target_method.
|
|
// * out_default_method - The pointer we will store the found default method to on success.
|
|
//
|
|
// Return value:
|
|
// * kDefaultFound - There were no conflicting method implementations found in the class while
|
|
// searching for target_method. The default method implementation is stored into
|
|
// out_default_method.
|
|
// * kAbstractFound - There were no conflicting method implementations found in the class while
|
|
// searching for target_method but no default implementation was found either.
|
|
// out_default_method is set to null and the method should be considered not
|
|
// implemented.
|
|
// * kDefaultConflict - Conflicting method implementations were found when searching for
|
|
// target_method. The value of *out_default_method is null.
|
|
DefaultMethodSearchResult FindDefaultMethodImplementation(
|
|
Thread* self,
|
|
ArtMethod* target_method,
|
|
Handle<mirror::Class> klass,
|
|
/*out*/ArtMethod** out_default_method) const
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Sets the imt entries and fixes up the vtable for the given class by linking all the interface
|
|
// methods. See LinkVirtualMethods for an explanation of what default_translations is.
|
|
bool LinkInterfaceMethods(
|
|
Thread* self,
|
|
Handle<mirror::Class> klass,
|
|
const HashMap<size_t, MethodTranslation>& default_translations,
|
|
bool* out_new_conflict,
|
|
ArtMethod** out_imt)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
bool LinkStaticFields(Thread* self, Handle<mirror::Class> klass, size_t* class_size)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
bool LinkInstanceFields(Thread* self, Handle<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
void CreateReferenceInstanceOffsets(Handle<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void CheckProxyConstructor(ArtMethod* constructor) const
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
void CheckProxyMethod(ArtMethod* method, ArtMethod* prototype) const
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
size_t GetDexCacheCount() REQUIRES_SHARED(Locks::mutator_lock_, Locks::dex_lock_) {
|
|
return dex_caches_.size();
|
|
}
|
|
const std::list<DexCacheData>& GetDexCachesData()
|
|
REQUIRES_SHARED(Locks::mutator_lock_, Locks::dex_lock_) {
|
|
return dex_caches_;
|
|
}
|
|
|
|
void CreateProxyConstructor(Handle<mirror::Class> klass, ArtMethod* out)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
void CreateProxyMethod(Handle<mirror::Class> klass, ArtMethod* prototype, ArtMethod* out)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Register a class loader and create its class table and allocator. Should not be called if
|
|
// these are already created.
|
|
void RegisterClassLoader(ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(Locks::classlinker_classes_lock_);
|
|
|
|
// Insert a new class table if not found.
|
|
ClassTable* InsertClassTableForClassLoader(ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(Locks::classlinker_classes_lock_);
|
|
|
|
// EnsureResolved is called to make sure that a class in the class_table_ has been resolved
|
|
// before returning it to the caller. Its the responsibility of the thread that placed the class
|
|
// in the table to make it resolved. The thread doing resolution must notify on the class' lock
|
|
// when resolution has occurred. This happens in mirror::Class::SetStatus. As resolution may
|
|
// retire a class, the version of the class in the table is returned and this may differ from
|
|
// the class passed in.
|
|
ObjPtr<mirror::Class> EnsureResolved(Thread* self,
|
|
const char* descriptor,
|
|
ObjPtr<mirror::Class> klass)
|
|
WARN_UNUSED
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::dex_lock_);
|
|
|
|
void FixupTemporaryDeclaringClass(ObjPtr<mirror::Class> temp_class,
|
|
ObjPtr<mirror::Class> new_class)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void SetClassRoot(ClassRoot class_root, ObjPtr<mirror::Class> klass)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Return the quick generic JNI stub for testing.
|
|
const void* GetRuntimeQuickGenericJniStub() const;
|
|
|
|
bool CanWeInitializeClass(ObjPtr<mirror::Class> klass,
|
|
bool can_init_statics,
|
|
bool can_init_parents)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void UpdateClassMethods(ObjPtr<mirror::Class> klass,
|
|
LengthPrefixedArray<ArtMethod>* new_methods)
|
|
REQUIRES_SHARED(Locks::mutator_lock_)
|
|
REQUIRES(!Locks::classlinker_classes_lock_);
|
|
|
|
// Check that c1 == FindSystemClass(self, descriptor). Abort with class dumps otherwise.
|
|
void CheckSystemClass(Thread* self, Handle<mirror::Class> c1, const char* descriptor)
|
|
REQUIRES(!Locks::dex_lock_)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Allocate method arrays for interfaces.
|
|
bool AllocateIfTableMethodArrays(Thread* self,
|
|
Handle<mirror::Class> klass,
|
|
Handle<mirror::IfTable> iftable)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Sets imt_ref appropriately for LinkInterfaceMethods.
|
|
// If there is no method in the imt location of imt_ref it will store the given method there.
|
|
// Otherwise it will set the conflict method which will figure out which method to use during
|
|
// runtime.
|
|
void SetIMTRef(ArtMethod* unimplemented_method,
|
|
ArtMethod* imt_conflict_method,
|
|
ArtMethod* current_method,
|
|
/*out*/bool* new_conflict,
|
|
/*out*/ArtMethod** imt_ref) REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void FillIMTFromIfTable(ObjPtr<mirror::IfTable> if_table,
|
|
ArtMethod* unimplemented_method,
|
|
ArtMethod* imt_conflict_method,
|
|
ObjPtr<mirror::Class> klass,
|
|
bool create_conflict_tables,
|
|
bool ignore_copied_methods,
|
|
/*out*/bool* new_conflict,
|
|
/*out*/ArtMethod** imt) REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
void FillImtFromSuperClass(Handle<mirror::Class> klass,
|
|
ArtMethod* unimplemented_method,
|
|
ArtMethod* imt_conflict_method,
|
|
bool* new_conflict,
|
|
ArtMethod** imt) REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Check invoke type against the referenced class. Throws IncompatibleClassChangeError
|
|
// (if `kThrowOnError`) and returns true on mismatch (kInterface on a non-interface class,
|
|
// kVirtual on interface, kDefault on interface for dex files not supporting default methods),
|
|
// otherwise returns false.
|
|
template <bool kThrowOnError, typename ClassGetter>
|
|
static bool CheckInvokeClassMismatch(ObjPtr<mirror::DexCache> dex_cache,
|
|
InvokeType type,
|
|
ClassGetter class_getter)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
// Helper that feeds the above function with `ClassGetter` doing `LookupResolvedType()`.
|
|
template <bool kThrow>
|
|
bool CheckInvokeClassMismatch(ObjPtr<mirror::DexCache> dex_cache,
|
|
InvokeType type,
|
|
uint32_t method_idx,
|
|
ObjPtr<mirror::ClassLoader> class_loader)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
ObjPtr<mirror::IfTable> GetArrayIfTable() REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
std::vector<const DexFile*> boot_class_path_;
|
|
std::vector<std::unique_ptr<const DexFile>> boot_dex_files_;
|
|
|
|
// JNI weak globals and side data to allow dex caches to get unloaded. We lazily delete weak
|
|
// globals when we register new dex files.
|
|
std::list<DexCacheData> dex_caches_ GUARDED_BY(Locks::dex_lock_);
|
|
|
|
// This contains the class loaders which have class tables. It is populated by
|
|
// InsertClassTableForClassLoader.
|
|
std::list<ClassLoaderData> class_loaders_
|
|
GUARDED_BY(Locks::classlinker_classes_lock_);
|
|
|
|
// Boot class path table. Since the class loader for this is null.
|
|
std::unique_ptr<ClassTable> boot_class_table_ GUARDED_BY(Locks::classlinker_classes_lock_);
|
|
|
|
// New class roots, only used by CMS since the GC needs to mark these in the pause.
|
|
std::vector<GcRoot<mirror::Class>> new_class_roots_ GUARDED_BY(Locks::classlinker_classes_lock_);
|
|
|
|
// Boot image oat files with new .bss GC roots to be visited in the pause by CMS.
|
|
std::vector<const OatFile*> new_bss_roots_boot_oat_files_
|
|
GUARDED_BY(Locks::classlinker_classes_lock_);
|
|
|
|
// Number of times we've searched dex caches for a class. After a certain number of misses we move
|
|
// the classes into the class_table_ to avoid dex cache based searches.
|
|
Atomic<uint32_t> failed_dex_cache_class_lookups_;
|
|
|
|
// Well known mirror::Class roots.
|
|
GcRoot<mirror::ObjectArray<mirror::Class>> class_roots_;
|
|
|
|
// Method hashes for virtual methods from java.lang.Object used
|
|
// to avoid recalculating them for each class we link.
|
|
uint32_t object_virtual_method_hashes_[mirror::Object::kVTableLength];
|
|
|
|
// A cache of the last FindArrayClass results. The cache serves to avoid creating array class
|
|
// descriptors for the sake of performing FindClass.
|
|
static constexpr size_t kFindArrayCacheSize = 16;
|
|
GcRoot<mirror::Class> find_array_class_cache_[kFindArrayCacheSize];
|
|
size_t find_array_class_cache_next_victim_;
|
|
|
|
bool init_done_;
|
|
bool log_new_roots_ GUARDED_BY(Locks::classlinker_classes_lock_);
|
|
|
|
InternTable* intern_table_;
|
|
|
|
const bool fast_class_not_found_exceptions_;
|
|
|
|
// Trampolines within the image the bounce to runtime entrypoints. Done so that there is a single
|
|
// patch point within the image. TODO: make these proper relocations.
|
|
const void* jni_dlsym_lookup_trampoline_;
|
|
const void* jni_dlsym_lookup_critical_trampoline_;
|
|
const void* quick_resolution_trampoline_;
|
|
const void* quick_imt_conflict_trampoline_;
|
|
const void* quick_generic_jni_trampoline_;
|
|
const void* quick_to_interpreter_bridge_trampoline_;
|
|
const void* nterp_trampoline_;
|
|
|
|
// Image pointer size.
|
|
PointerSize image_pointer_size_;
|
|
|
|
// Classes to transition from ClassStatus::kInitialized to ClassStatus::kVisiblyInitialized.
|
|
Mutex visibly_initialized_callback_lock_;
|
|
std::unique_ptr<VisiblyInitializedCallback> visibly_initialized_callback_
|
|
GUARDED_BY(visibly_initialized_callback_lock_);
|
|
IntrusiveForwardList<VisiblyInitializedCallback> running_visibly_initialized_callbacks_
|
|
GUARDED_BY(visibly_initialized_callback_lock_);
|
|
|
|
// Registered native code for @CriticalNative methods of classes that are not visibly
|
|
// initialized. These code pointers cannot be stored in ArtMethod as that would risk
|
|
// skipping the class initialization check for direct calls from compiled code.
|
|
Mutex critical_native_code_with_clinit_check_lock_;
|
|
std::map<ArtMethod*, void*> critical_native_code_with_clinit_check_
|
|
GUARDED_BY(critical_native_code_with_clinit_check_lock_);
|
|
|
|
std::unique_ptr<ClassHierarchyAnalysis> cha_;
|
|
|
|
class FindVirtualMethodHolderVisitor;
|
|
|
|
friend class AppImageLoadingHelper;
|
|
friend class ImageDumper; // for DexLock
|
|
friend struct linker::CompilationHelper; // For Compile in ImageTest.
|
|
friend class linker::ImageWriter; // for GetClassRoots
|
|
friend class JniCompilerTest; // for GetRuntimeQuickGenericJniStub
|
|
friend class JniInternalTest; // for GetRuntimeQuickGenericJniStub
|
|
friend class VMClassLoader; // for LookupClass and FindClassInBaseDexClassLoader.
|
|
ART_FRIEND_TEST(ClassLinkerTest, RegisterDexFileName); // for DexLock, and RegisterDexFileLocked
|
|
ART_FRIEND_TEST(mirror::DexCacheMethodHandlesTest, Open); // for AllocDexCache
|
|
ART_FRIEND_TEST(mirror::DexCacheTest, Open); // for AllocDexCache
|
|
DISALLOW_COPY_AND_ASSIGN(ClassLinker);
|
|
};
|
|
|
|
class ClassLoadCallback {
|
|
public:
|
|
virtual ~ClassLoadCallback() {}
|
|
|
|
// Called immediately before beginning class-definition and immediately before returning from it.
|
|
virtual void BeginDefineClass() REQUIRES_SHARED(Locks::mutator_lock_) {}
|
|
virtual void EndDefineClass() REQUIRES_SHARED(Locks::mutator_lock_) {}
|
|
|
|
// If set we will replace initial_class_def & initial_dex_file with the final versions. The
|
|
// callback author is responsible for ensuring these are allocated in such a way they can be
|
|
// cleaned up if another transformation occurs. Note that both must be set or null/unchanged on
|
|
// return.
|
|
// Note: the class may be temporary, in which case a following ClassPrepare event will be a
|
|
// different object. It is the listener's responsibility to handle this.
|
|
// Note: This callback is rarely useful so a default implementation has been given that does
|
|
// nothing.
|
|
virtual void ClassPreDefine(const char* descriptor ATTRIBUTE_UNUSED,
|
|
Handle<mirror::Class> klass ATTRIBUTE_UNUSED,
|
|
Handle<mirror::ClassLoader> class_loader ATTRIBUTE_UNUSED,
|
|
const DexFile& initial_dex_file ATTRIBUTE_UNUSED,
|
|
const dex::ClassDef& initial_class_def ATTRIBUTE_UNUSED,
|
|
/*out*/DexFile const** final_dex_file ATTRIBUTE_UNUSED,
|
|
/*out*/dex::ClassDef const** final_class_def ATTRIBUTE_UNUSED)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {}
|
|
|
|
// A class has been loaded.
|
|
// Note: the class may be temporary, in which case a following ClassPrepare event will be a
|
|
// different object. It is the listener's responsibility to handle this.
|
|
virtual void ClassLoad(Handle<mirror::Class> klass) REQUIRES_SHARED(Locks::mutator_lock_) = 0;
|
|
|
|
// A class has been prepared, i.e., resolved. As the ClassLoad event might have been for a
|
|
// temporary class, provide both the former and the current class.
|
|
virtual void ClassPrepare(Handle<mirror::Class> temp_klass,
|
|
Handle<mirror::Class> klass) REQUIRES_SHARED(Locks::mutator_lock_) = 0;
|
|
};
|
|
|
|
} // namespace art
|
|
|
|
#endif // ART_RUNTIME_CLASS_LINKER_H_
|