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/*
* Copyright (C) 2007 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.
*/
#pragma once
#include <stdint.h>
#include <sys/types.h>
#include <binder/Common.h>
#include <binder/IMemory.h>
#include <binder/MemoryHeapBase.h>
namespace android {
// ----------------------------------------------------------------------------
class SimpleBestFitAllocator;
// ----------------------------------------------------------------------------
class MemoryDealer : public RefBase {
public:
LIBBINDER_EXPORTED explicit MemoryDealer(
size_t size, const char* name = nullptr,
uint32_t flags = 0 /* or bits such as MemoryHeapBase::READ_ONLY */);
LIBBINDER_EXPORTED virtual sp<IMemory> allocate(size_t size);
LIBBINDER_EXPORTED virtual void dump(const char* what) const;
// allocations are aligned to some value. return that value so clients can account for it.
LIBBINDER_EXPORTED static size_t getAllocationAlignment();
sp<IMemoryHeap> getMemoryHeap() const { return heap(); }
protected:
LIBBINDER_EXPORTED virtual ~MemoryDealer();
private:
friend class Allocation;
virtual void deallocate(size_t offset);
LIBBINDER_EXPORTED const sp<IMemoryHeap>& heap() const;
SimpleBestFitAllocator* allocator() const;
sp<IMemoryHeap> mHeap;
SimpleBestFitAllocator* mAllocator;
};
// ----------------------------------------------------------------------------
} // namespace android
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