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/*
* Copyright (C) 2015 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_LAMBDA_LEAKING_ALLOCATOR_H_
#define ART_RUNTIME_LAMBDA_LEAKING_ALLOCATOR_H_
#include <utility> // std::forward
namespace art {
class Thread; // forward declaration
namespace lambda {
// Temporary class to centralize all the leaking allocations.
// Allocations made through this class are never freed, but it is a placeholder
// that means that the calling code needs to be rewritten to properly:
//
// (a) Have a lifetime scoped to some other entity.
// (b) Not be allocated over and over again if it was already allocated once (immutable data).
//
// TODO: do all of the above a/b for each callsite, and delete this class.
class LeakingAllocator {
public:
// Allocate byte_size bytes worth of memory. Never freed.
static void* AllocateMemory(Thread* self, size_t byte_size);
// Make a new instance of T, flexibly sized, in-place at newly allocated memory. Never freed.
template <typename T, typename... Args>
static T* MakeFlexibleInstance(Thread* self, size_t byte_size, Args&&... args) {
return new (AllocateMemory(self, byte_size)) T(std::forward<Args>(args)...);
}
// Make a new instance of T in-place at newly allocated memory. Never freed.
template <typename T, typename... Args>
static T* MakeInstance(Thread* self, Args&&... args) {
return new (AllocateMemory(self, sizeof(T))) T(std::forward<Args>(args)...);
}
};
} // namespace lambda
} // namespace art
#endif // ART_RUNTIME_LAMBDA_LEAKING_ALLOCATOR_H_
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