FeedEngine.h

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/*
* Copyright Onix Solutions Limited [OnixS]. All rights reserved.
*
* This software owned by Onix Solutions Limited [OnixS] and is protected by copyright law
* and international copyright treaties.
*
* Access to and use of the software is governed by the terms of the applicable ONIXS Software
* Services Agreement (the Agreement) and Customer end user license agreements granting
* a non-assignable, non-transferable and non-exclusive license to use the software
* for it's own data processing purposes under the terms defined in the Agreement.
*
* Except as otherwise granted within the terms of the Agreement, copying or reproduction of any part
* of this source code or associated reference material to any other location for further reproduction
* or redistribution, and any amendments to this copyright notice, are expressly prohibited.
*
* Any reproduction or redistribution for sale or hiring of the Software not in accordance with
* the terms of the Agreement is a violation of copyright law.
*/
 
#pragma once
 
#include <OnixS/eSpeed/MarketData/Itch/ABI.h>
#include <OnixS/eSpeed/MarketData/Itch/Bootstrap.h>
#include <OnixS/eSpeed/MarketData/Itch/Compiler.h>
#include <OnixS/eSpeed/MarketData/Itch/Integral.h>
 
#include <string>
#include <set>
 
ONIXS_ESPEED_ITCH_NAMESPACE_BEGIN

typedef size_t CpuIndex;

class ONIXS_ESPEED_ITCH_API ThreadAffinity
{
    typedef std::set<CpuIndex> CpuIndexes;
 
public:
    ThreadAffinity();

    ThreadAffinity(const ThreadAffinity&);

    ~ThreadAffinity();

    bool empty() const;

    void copyTo(CpuIndexes&) const;

    bool insert(CpuIndex index);

    bool erase(CpuIndex index);

    void clear();

    ThreadAffinity& operator = (const ThreadAffinity&);

    std::string toString() const;
 
private:

    CpuIndexes* indices_;
};

class ONIXS_ESPEED_ITCH_API FeedEngineSettings
{
    ThreadAffinity threadAffinity_;
 
    UInt32 threadCount_;
 
    UInt32 dataWaitTime_;
    UInt32 spinBeforeIdleTime_;
 
    UInt32 socketBufferSize_;
 
public:
    FeedEngineSettings();
 

    ~FeedEngineSettings();
 

    const ThreadAffinity& threadAffinity() const
    {
        return threadAffinity_;
    }

    ThreadAffinity& threadAffinity()
    {
        return threadAffinity_;
    }

    UInt32 threadCount() const
    {
        return threadCount_;
    }

    void threadCount(UInt32 value)
    {
        threadCount_ = value;
    }

    UInt32 dataWaitTime() const
    {
        return dataWaitTime_;
    }

    void dataWaitTime(UInt32 value)
    {
        dataWaitTime_ = value;
    }

    UInt32 spinBeforeIdleTime() const
    {
        return spinBeforeIdleTime_;
    }

    void spinBeforeIdleTime(UInt32 value)
    {
        spinBeforeIdleTime_ = value;
    }

    UInt32 socketBufferSize() const
    {
        return socketBufferSize_;
    }

    void socketBufferSize(UInt32 value)
    {
        socketBufferSize_ = value;
    }

    std::string toString() const;
};
 
ONIXS_ESPEED_ITCH_API std::ostream& operator << (std::ostream& stream, const FeedEngineSettings& settings);

struct FeedEngineThreadIdle
{
    enum Reason
    {
        DataWaitTimeout,

        Redundant
    };
};
 
//
ONIXS_ESPEED_ITCH_API_DECL(class, FeedEngine);

struct ONIXS_ESPEED_ITCH_API FeedEngineListener
{
    virtual void onFeedEngineThreadBegin(const FeedEngine&) {}

    virtual void onFeedEngineThreadEnd(const FeedEngine&) {}

    virtual void onFeedEngineThreadIdle(const FeedEngine&, FeedEngineThreadIdle::Reason, UInt32&) {}
};
 
class FeedEngineImpl;

class ONIXS_ESPEED_ITCH_API FeedEngine
{
public:
    FeedEngine(const FeedEngineSettings&, FeedEngineListener* = ONIXS_ESPEED_ITCH_NULLPTR);

    ~FeedEngine();

    const FeedEngineSettings& settings() const;
 
private:
    // Copying is not supposed for given class.
    FeedEngine(const FeedEngine&);
    FeedEngine& operator =(const FeedEngine&);
 
    friend class FeedEngineImpl;
 
    FeedEngineImpl* impl_;
};
 
ONIXS_ESPEED_ITCH_NAMESPACE_END