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/*
* Copyright (C) 2023 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.
*/
#include "class_linker.h"
#include "code_generation_data.h"
#include "code_generator.h"
#include "intern_table.h"
#include "mirror/object-inl.h"
#include "runtime.h"
#include "well_known_classes-inl.h"
namespace art HIDDEN {
void CodeGenerationData::EmitJitRoots(
/*out*/std::vector<Handle<mirror::Object>>* roots) {
DCHECK(roots->empty());
roots->reserve(GetNumberOfJitRoots());
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
size_t index = 0;
for (auto& entry : jit_string_roots_) {
// Update the `roots` with the string, and replace the address temporarily
// stored to the index in the table.
uint64_t address = entry.second;
roots->emplace_back(reinterpret_cast<StackReference<mirror::Object>*>(address));
DCHECK(roots->back() != nullptr);
DCHECK(roots->back()->IsString());
entry.second = index;
// Ensure the string is strongly interned. This is a requirement on how the JIT
// handles strings. b/32995596
class_linker->GetInternTable()->InternStrong(roots->back()->AsString());
++index;
}
for (auto& entry : jit_class_roots_) {
// Update the `roots` with the class, and replace the address temporarily
// stored to the index in the table.
uint64_t address = entry.second;
roots->emplace_back(reinterpret_cast<StackReference<mirror::Object>*>(address));
DCHECK(roots->back() != nullptr);
DCHECK(roots->back()->IsClass());
entry.second = index;
++index;
}
for (auto& entry : jit_method_type_roots_) {
// Update the `roots` with the MethodType, and replace the address temporarily
// stored to the index in the table.
uint64_t address = entry.second;
roots->emplace_back(reinterpret_cast<StackReference<mirror::Object>*>(address));
DCHECK(roots->back() != nullptr);
DCHECK(roots->back()->InstanceOf(WellKnownClasses::java_lang_invoke_MethodType.Get()));
entry.second = index;
++index;
}
}
} // namespace art
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