runtime/interpreter/interpreter_cache.cc

/*
 * Copyright (C) 2018 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 "interpreter_cache.h"
#include "thread-inl.h"

namespace art HIDDEN {

void InterpreterCache::Clear(Thread* owning_thread) {
  DCHECK(owning_thread->GetInterpreterCache() == this);
  DCHECK(owning_thread == Thread::Current() || owning_thread->IsSuspended() ||
         owning_thread->ReadFlag(ThreadFlag::kRunningFlipFunction, std::memory_order_relaxed));
  // Avoid using std::fill (or its variant) as there could be a concurrent sweep
  // happening by the GC thread and these functions may clear partially.
  for (Entry& entry : data_) {
    std::atomic<const void*>* atomic_key_addr =
        reinterpret_cast<std::atomic<const void*>*>(&entry.first);
    atomic_key_addr->store(nullptr, std::memory_order_relaxed);
  }
}

}  // namespace art