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/*
* Copyright (C) 2020 ARM Limited. All rights reserved.
*
* Copyright 2016 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 GRALLOC_COMMON_REGISTERED_HANDLE_POOL_H
#define GRALLOC_COMMON_REGISTERED_HANDLE_POOL_H
#include <cutils/native_handle.h>
#include <mutex>
#include <unordered_set>
#include <algorithm>
#include <functional>
/* An unordered set to internally store / retrieve imported buffer handles */
class RegisteredHandlePool
{
public:
/* Stores the buffer handle in the internal list */
bool add(buffer_handle_t bufferHandle);
/* Retrieves and removes the buffer handle from internal list */
native_handle_t* remove(void* buffer);
/* Retrieves the buffer handle from internal list */
buffer_handle_t get(const void* buffer);
/* Applies a function to each buffer handle */
void for_each(std::function<void(const buffer_handle_t &)> fn);
private:
std::mutex mutex;
std::unordered_set<buffer_handle_t> bufPool;
};
#endif /* GRALLOC_COMMON_REGISTERED_HANDLE_POOL_H */
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