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/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* 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 <hicn/transport/utils/object_pool.h>
namespace transport {
namespace protocol {
using namespace core;
template <typename PacketType, std::size_t packet_pool_size = 4096>
class PacketManager {
static_assert(std::is_base_of<Packet, PacketType>::value,
"The packet manager support just Interest and Data.");
public:
PacketManager(std::size_t size = packet_pool_size) : size_(0) {
// Create pool of interests
increasePoolSize(size);
}
TRANSPORT_ALWAYS_INLINE void increasePoolSize(std::size_t size) {
for (std::size_t i = 0; i < size; i++) {
interest_pool_.add(new PacketType());
}
size_ += size;
}
TRANSPORT_ALWAYS_INLINE typename PacketType::Ptr getPacket() {
auto result = interest_pool_.get();
while (TRANSPORT_EXPECT_FALSE(!result.first)) {
// Add packets to the pool
increasePoolSize(size_);
result = interest_pool_.get();
}
result.second->resetPayload();
return std::move(result.second);
}
private:
utils::ObjectPool<PacketType> interest_pool_;
std::size_t size_;
};
} // end namespace protocol
} // end namespace transport
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