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/*
* Copyright 2024 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_JIT_JIT_CODE_CACHE_INL_H_
#define ART_RUNTIME_JIT_JIT_CODE_CACHE_INL_H_
#include "jit/jit_code_cache.h"
#include "base/macros.h"
#include "read_barrier.h"
#include "thread.h"
#include "well_known_classes-inl.h"
namespace art HIDDEN {
class ArtMethod;
namespace jit {
template<typename RootVisitorType>
EXPORT void JitCodeCache::VisitRootTables(ArtMethod* method, RootVisitorType& visitor) {
if (method->IsNative()) {
return;
}
Thread* self = Thread::Current();
ScopedDebugDisallowReadBarriers sddrb(self);
MutexLock mu(self, *Locks::jit_lock_);
auto range = method_code_map_reversed_.equal_range(method);
for (auto it = range.first; it != range.second; ++it) {
uint32_t number_of_roots = 0;
const uint8_t* root_table = GetRootTable(it->second, &number_of_roots);
uint8_t* roots_data = private_region_.IsInDataSpace(root_table)
? private_region_.GetWritableDataAddress(root_table)
: shared_region_.GetWritableDataAddress(root_table);
GcRoot<mirror::Object>* roots = reinterpret_cast<GcRoot<mirror::Object>*>(roots_data);
for (uint32_t i = 0; i < number_of_roots; ++i) {
// This does not need a read barrier because this is called by GC.
mirror::Object* object = roots[i].Read<kWithoutReadBarrier>();
if (!(object == nullptr ||
object == Runtime::GetWeakClassSentinel() ||
object->IsString<kDefaultVerifyFlags>() ||
object->IsClass<kDefaultVerifyFlags>())) {
// We don't need to visit j.l.Class and j.l.String and the only remaining possible
// objects are MethodType-s.
if (kIsDebugBuild) {
ObjPtr<mirror::Class> method_type_class =
WellKnownClasses::java_lang_invoke_MethodType.Get<kWithoutReadBarrier>();
ObjPtr<mirror::Class> klass =
object->GetClass<kDefaultVerifyFlags, kWithoutReadBarrier>();
CHECK(klass == method_type_class ||
klass == ReadBarrier::IsMarked(method_type_class.Ptr()) ||
ReadBarrier::IsMarked(klass.Ptr()) == method_type_class);
}
visitor.VisitRoot(roots[i].AddressWithoutBarrier());
}
}
}
}
} // namespace jit
} // namespace art
#endif // ART_RUNTIME_JIT_JIT_CODE_CACHE_INL_H_
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