ringbuffer.hpp

// ---------------------------------------------------------------------
// This file is part of falcon-core.
//
// Copyright (C) 2015, 2016, 2017 Neuro-Electronics Research Flanders
//
// Falcon-server is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Falcon-server is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with falcon-core. If not, see <http://www.gnu.org/licenses/>.
// ---------------------------------------------------------------------
 
#pragma once
 
#include "disruptor/batch_descriptor.h"
#include "disruptor/claim_strategy.h"
#include "disruptor/interface.h"
#include "disruptor/ring_buffer.h"
#include "disruptor/wait_strategy.h"

 
template <typename T>
class RingBuffer : public disruptor::Sequencer {
   public:
    RingBuffer(const T& prototype, int buffer_size,
               disruptor::ClaimStrategyOption claim_strategy_option,
               disruptor::WaitStrategyOption wait_strategy_option)
        : disruptor::Sequencer(buffer_size, claim_strategy_option, wait_strategy_option),
          buffer_size_(buffer_size),
          mask_(buffer_size - 1),
          events_(buffer_size, prototype) {}

 
    T* Get(const int64_t& sequence) { return &events_[sequence & mask_]; }
 
   private:
    // Members
    int buffer_size_;
    int mask_;
    std::vector<T> events_;
 
    DISALLOW_COPY_AND_ASSIGN(RingBuffer);
};
 
typedef disruptor::ProcessingSequenceBarrier RingBarrier;
 
typedef disruptor::Sequence RingSequence;
 
typedef disruptor::ClaimStrategyOption ClaimStrategy;
typedef disruptor::WaitStrategyOption WaitStrategy;
typedef disruptor::AlertException RingAlertException;
 
typedef disruptor::BatchDescriptor RingBatch;