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/*
* Copyright (C) 2017 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_INL_H_
#define ART_RUNTIME_MIRROR_CLASS_EXT_INL_H_
#include "class_ext.h"
#include "array-inl.h"
#include "art_method-inl.h"
#include "base/enums.h"
#include "base/globals.h"
#include "class_root.h"
#include "handle_scope.h"
#include "jni/jni_internal.h"
#include "jni_id_type.h"
#include "mirror/array.h"
#include "mirror/object.h"
#include "object-inl.h"
#include "verify_object.h"
#include "well_known_classes.h"
namespace art {
namespace mirror {
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline bool ClassExt::EnsureJniIdsArrayPresent(MemberOffset off, size_t count) {
ObjPtr<Object> existing(
GetFieldObject<Object, kVerifyFlags, kReadBarrierOption>(off));
if (!existing.IsNull()) {
return true;
}
Thread* self = Thread::Current();
StackHandleScope<2> hs(self);
Handle<ClassExt> h_this(hs.NewHandle(this));
MutableHandle<Object> new_arr(hs.NewHandle<Object>(nullptr));
if (UNLIKELY(Runtime::Current()->GetJniIdType() == JniIdType::kSwapablePointer)) {
new_arr.Assign(Runtime::Current()->GetJniIdManager()->GetPointerMarker());
} else {
new_arr.Assign(Runtime::Current()->GetClassLinker()->AllocPointerArray(self, count));
}
if (new_arr.IsNull()) {
// Fail.
self->AssertPendingOOMException();
return false;
}
bool set;
// Set the ext_data_ field using CAS semantics.
if (Runtime::Current()->IsActiveTransaction()) {
set = h_this->CasFieldObject<true>(
off, nullptr, new_arr.Get(), CASMode::kStrong, std::memory_order_seq_cst);
} else {
set = h_this->CasFieldObject<false>(
off, nullptr, new_arr.Get(), CASMode::kStrong, std::memory_order_seq_cst);
}
if (kIsDebugBuild) {
ObjPtr<Object> ret(
set ? new_arr.Get()
: h_this->GetFieldObject<PointerArray, kVerifyFlags, kReadBarrierOption>(off));
CHECK(!ret.IsNull());
}
return true;
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline bool ClassExt::EnsureJMethodIDsArrayPresent(size_t count) {
return EnsureJniIdsArrayPresent<kVerifyFlags, kReadBarrierOption>(
MemberOffset(OFFSET_OF_OBJECT_MEMBER(ClassExt, jmethod_ids_)), count);
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline bool ClassExt::EnsureStaticJFieldIDsArrayPresent(size_t count) {
return EnsureJniIdsArrayPresent<kVerifyFlags, kReadBarrierOption>(
MemberOffset(OFFSET_OF_OBJECT_MEMBER(ClassExt, static_jfield_ids_)), count);
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline bool ClassExt::EnsureInstanceJFieldIDsArrayPresent(size_t count) {
return EnsureJniIdsArrayPresent<kVerifyFlags, kReadBarrierOption>(
MemberOffset(OFFSET_OF_OBJECT_MEMBER(ClassExt, instance_jfield_ids_)), count);
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline ObjPtr<Object> ClassExt::GetInstanceJFieldIDs() {
return GetFieldObject<Object, kVerifyFlags, kReadBarrierOption>(
OFFSET_OF_OBJECT_MEMBER(ClassExt, instance_jfield_ids_));
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline bool ClassExt::HasInstanceFieldPointerIdMarker() {
ObjPtr<Object> arr(GetInstanceJFieldIDs<kVerifyFlags, kReadBarrierOption>());
return !arr.IsNull() && !arr->IsArrayInstance();
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline ObjPtr<PointerArray> ClassExt::GetInstanceJFieldIDsPointerArray() {
DCHECK(!HasInstanceFieldPointerIdMarker());
return down_cast<PointerArray*>(GetInstanceJFieldIDs<kVerifyFlags, kReadBarrierOption>().Ptr());
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline ObjPtr<Object> ClassExt::GetStaticJFieldIDs() {
return GetFieldObject<Object, kVerifyFlags, kReadBarrierOption>(
OFFSET_OF_OBJECT_MEMBER(ClassExt, static_jfield_ids_));
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline ObjPtr<PointerArray> ClassExt::GetStaticJFieldIDsPointerArray() {
DCHECK(!HasStaticFieldPointerIdMarker());
return down_cast<PointerArray*>(GetStaticJFieldIDs<kVerifyFlags, kReadBarrierOption>().Ptr());
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline bool ClassExt::HasStaticFieldPointerIdMarker() {
ObjPtr<Object> arr(GetStaticJFieldIDs<kVerifyFlags, kReadBarrierOption>());
return !arr.IsNull() && !arr->IsArrayInstance();
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline ObjPtr<Class> ClassExt::GetObsoleteClass() {
return GetFieldObject<Class, kVerifyFlags, kReadBarrierOption>(
OFFSET_OF_OBJECT_MEMBER(ClassExt, obsolete_class_));
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline ObjPtr<Object> ClassExt::GetJMethodIDs() {
return GetFieldObject<Object, kVerifyFlags, kReadBarrierOption>(
OFFSET_OF_OBJECT_MEMBER(ClassExt, jmethod_ids_));
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline ObjPtr<PointerArray> ClassExt::GetJMethodIDsPointerArray() {
DCHECK(!HasMethodPointerIdMarker());
return down_cast<PointerArray*>(GetJMethodIDs<kVerifyFlags, kReadBarrierOption>().Ptr());
}
template <VerifyObjectFlags kVerifyFlags, ReadBarrierOption kReadBarrierOption>
inline bool ClassExt::HasMethodPointerIdMarker() {
ObjPtr<Object> arr(GetJMethodIDs<kVerifyFlags, kReadBarrierOption>());
return !arr.IsNull() && !arr->IsArrayInstance();
}
inline ObjPtr<Object> ClassExt::GetVerifyError() {
return GetFieldObject<ClassExt>(OFFSET_OF_OBJECT_MEMBER(ClassExt, verify_error_));
}
inline ObjPtr<ObjectArray<DexCache>> ClassExt::GetObsoleteDexCaches() {
return GetFieldObject<ObjectArray<DexCache>>(
OFFSET_OF_OBJECT_MEMBER(ClassExt, obsolete_dex_caches_));
}
template<VerifyObjectFlags kVerifyFlags,
ReadBarrierOption kReadBarrierOption>
inline ObjPtr<PointerArray> ClassExt::GetObsoleteMethods() {
return GetFieldObject<PointerArray, kVerifyFlags, kReadBarrierOption>(
OFFSET_OF_OBJECT_MEMBER(ClassExt, obsolete_methods_));
}
inline ObjPtr<Object> ClassExt::GetOriginalDexFile() {
return GetFieldObject<Object>(OFFSET_OF_OBJECT_MEMBER(ClassExt, original_dex_file_));
}
template<ReadBarrierOption kReadBarrierOption, class Visitor>
void ClassExt::VisitNativeRoots(Visitor& visitor, PointerSize pointer_size) {
VisitMethods<kReadBarrierOption>([&](ArtMethod* method) {
method->VisitRoots<kReadBarrierOption>(visitor, pointer_size);
}, pointer_size);
}
template<ReadBarrierOption kReadBarrierOption, class Visitor>
void ClassExt::VisitMethods(Visitor visitor, PointerSize pointer_size) {
ObjPtr<PointerArray> arr(GetObsoleteMethods<kDefaultVerifyFlags, kReadBarrierOption>());
if (!arr.IsNull()) {
int32_t len = arr->GetLength();
for (int32_t i = 0; i < len; i++) {
ArtMethod* method = arr->GetElementPtrSize<ArtMethod*>(i, pointer_size);
if (method != nullptr) {
visitor(method);
}
}
}
}
template<ReadBarrierOption kReadBarrierOption, class Visitor>
void ClassExt::VisitJMethodIDs(Visitor v) {
ObjPtr<Object> arr(GetJMethodIDs<kDefaultVerifyFlags, kReadBarrierOption>());
if (!arr.IsNull() && arr->IsArrayInstance()) {
ObjPtr<PointerArray> marr(down_cast<PointerArray*>(arr.Ptr()));
int32_t len = marr->GetLength();
for (int32_t i = 0; i < len; i++) {
jmethodID id = marr->GetElementPtrSize<jmethodID>(i, kRuntimePointerSize);
if (id != nullptr) {
v(id, i);
}
}
}
}
template<ReadBarrierOption kReadBarrierOption, class Visitor>
void ClassExt::VisitJFieldIDs(Visitor v) {
ObjPtr<Object> sarr_obj(GetStaticJFieldIDs<kDefaultVerifyFlags, kReadBarrierOption>());
if (!sarr_obj.IsNull() && sarr_obj->IsArrayInstance()) {
ObjPtr<PointerArray> sarr(down_cast<PointerArray*>(sarr_obj->AsArray().Ptr()));
int32_t len = sarr->GetLength();
for (int32_t i = 0; i < len; i++) {
jfieldID id = sarr->GetElementPtrSize<jfieldID>(i, kRuntimePointerSize);
if (id != nullptr) {
v(id, i, true);
}
}
}
ObjPtr<PointerArray> iarr_obj(GetInstanceJFieldIDs<kDefaultVerifyFlags, kReadBarrierOption>());
if (!iarr_obj.IsNull() && iarr_obj->IsArrayInstance()) {
ObjPtr<PointerArray> iarr(down_cast<PointerArray*>(iarr_obj->AsArray().Ptr()));
int32_t len = iarr->GetLength();
for (int32_t i = 0; i < len; i++) {
jfieldID id = iarr->GetElementPtrSize<jfieldID>(i, kRuntimePointerSize);
if (id != nullptr) {
v(id, i, false);
}
}
}
}
} // namespace mirror
} // namespace art
#endif // ART_RUNTIME_MIRROR_CLASS_EXT_INL_H_