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/*
* Copyright (C) 2016 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_RUNTIME_MIRROR_CLASS_EXT_H_
#define ART_RUNTIME_MIRROR_CLASS_EXT_H_
#include "array.h"
#include "class.h"
#include "dex_cache.h"
#include "object.h"
#include "object_array.h"
#include "string.h"
namespace art {
struct ClassExtOffsets;
namespace mirror {
// C++ mirror of dalvik.system.ClassExt
class MANAGED ClassExt : public Object {
public:
static uint32_t ClassSize(PointerSize pointer_size);
// Size of an instance of dalvik.system.ClassExt.
static constexpr uint32_t InstanceSize() {
return sizeof(ClassExt);
}
void SetVerifyError(ObjPtr<Object> obj) REQUIRES_SHARED(Locks::mutator_lock_);
ObjPtr<Object> GetVerifyError() REQUIRES_SHARED(Locks::mutator_lock_);
ObjPtr<ObjectArray<DexCache>> GetObsoleteDexCaches() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
bool EnsureInstanceJFieldIDsArrayPresent(size_t count)
REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
ObjPtr<PointerArray> GetInstanceJFieldIDsPointerArray() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
ObjPtr<Object> GetInstanceJFieldIDs() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
bool HasInstanceFieldPointerIdMarker() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
bool EnsureStaticJFieldIDsArrayPresent(size_t count)
REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
ObjPtr<PointerArray> GetStaticJFieldIDsPointerArray() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
ObjPtr<Object> GetStaticJFieldIDs() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
bool HasStaticFieldPointerIdMarker() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
bool EnsureJMethodIDsArrayPresent(size_t count)
REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
ObjPtr<Object> GetJMethodIDs() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
ObjPtr<PointerArray> GetJMethodIDsPointerArray() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
bool HasMethodPointerIdMarker() REQUIRES_SHARED(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
ObjPtr<PointerArray> GetObsoleteMethods() REQUIRES_SHARED(Locks::mutator_lock_);
ObjPtr<Object> GetOriginalDexFile() REQUIRES_SHARED(Locks::mutator_lock_);
// Used to manually initialize the ext-ids arrays for the ClassExt associated
// with the Class<ClassExt>. This simplifies the id allocation path.
void SetIdsArraysForClassExtExtData(ObjPtr<Object> marker) REQUIRES_SHARED(Locks::mutator_lock_);
void SetOriginalDexFile(ObjPtr<Object> bytes) REQUIRES_SHARED(Locks::mutator_lock_);
uint16_t GetPreRedefineClassDefIndex() REQUIRES_SHARED(Locks::mutator_lock_) {
return static_cast<uint16_t>(
GetField32(OFFSET_OF_OBJECT_MEMBER(ClassExt, pre_redefine_class_def_index_)));
}
void SetPreRedefineClassDefIndex(uint16_t index) REQUIRES_SHARED(Locks::mutator_lock_);
const DexFile* GetPreRedefineDexFile() REQUIRES_SHARED(Locks::mutator_lock_) {
return reinterpret_cast<const DexFile*>(static_cast<uintptr_t>(
GetField64(OFFSET_OF_OBJECT_MEMBER(ClassExt, pre_redefine_dex_file_ptr_))));
}
void SetPreRedefineDexFile(const DexFile* dex_file) REQUIRES_SHARED(Locks::mutator_lock_);
void SetObsoleteArrays(ObjPtr<PointerArray> methods, ObjPtr<ObjectArray<DexCache>> dex_caches)
REQUIRES_SHARED(Locks::mutator_lock_);
// Extend the obsolete arrays by the given amount.
static bool ExtendObsoleteArrays(Handle<ClassExt> h_this, Thread* self, uint32_t increase)
REQUIRES_SHARED(Locks::mutator_lock_);
template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier, class Visitor>
inline void VisitNativeRoots(Visitor& visitor, PointerSize pointer_size)
REQUIRES_SHARED(Locks::mutator_lock_);
template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier, class Visitor>
inline void VisitMethods(Visitor visitor, PointerSize pointer_size)
REQUIRES_SHARED(Locks::mutator_lock_);
static ObjPtr<ClassExt> Alloc(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_);
// TODO Save the obsolete class, if we have one.
// TODO We need this so jit-cleanup can work. the obsolete class might get cleaned up early
// otherwise. We should remove the need for this.
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
ObjPtr<Class> GetObsoleteClass() REQUIRES_SHARED(Locks::mutator_lock_);
void SetObsoleteClass(ObjPtr<Class> classes) REQUIRES_SHARED(Locks::mutator_lock_);
template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor>
inline void VisitJFieldIDs(Visitor v) REQUIRES_SHARED(Locks::mutator_lock_);
template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor>
inline void VisitJMethodIDs(Visitor v) REQUIRES_SHARED(Locks::mutator_lock_);
private:
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
bool EnsureJniIdsArrayPresent(MemberOffset off, size_t count)
REQUIRES_SHARED(Locks::mutator_lock_);
// Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses".
// An array containing the jfieldIDs assigned to each field in the corresponding position in the
// classes ifields_ array or '0' if no id has been assigned to that field yet.
HeapReference<PointerArray> instance_jfield_ids_;
// An array containing the jmethodIDs assigned to each method in the corresponding position in
// the classes methods_ array or '0' if no id has been assigned to that method yet.
HeapReference<PointerArray> jmethod_ids_;
// If set this is the Class object that was being used before a structural redefinition occurred.
HeapReference<Class> obsolete_class_;
HeapReference<ObjectArray<DexCache>> obsolete_dex_caches_;
HeapReference<PointerArray> obsolete_methods_;
HeapReference<Object> original_dex_file_;
// An array containing the jfieldIDs assigned to each field in the corresponding position in the
// classes sfields_ array or '0' if no id has been assigned to that field yet.
HeapReference<PointerArray> static_jfield_ids_;
// The saved verification error of this class.
HeapReference<Object> verify_error_;
// Native pointer to DexFile and ClassDef index of this class before it was JVMTI-redefined.
int64_t pre_redefine_dex_file_ptr_;
int32_t pre_redefine_class_def_index_;
friend struct art::ClassExtOffsets; // for verifying offset information
DISALLOW_IMPLICIT_CONSTRUCTORS(ClassExt);
};
} // namespace mirror
} // namespace art
#endif // ART_RUNTIME_MIRROR_CLASS_EXT_H_
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