|| || || || || || || ||

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ThreadHistory.h

Go to the documentation of this file.

#ifndef Impala_Core_Trec_ThreadHistory_h
#define Impala_Core_Trec_ThreadHistory_h

#include "Core/Trec/Thread.h"
#include "Core/VideoSet/TableShots.h"
#include "Core/Column/Find.h"

namespace Impala
{
namespace Core
{
namespace Trec
{


class ThreadHistory : public Thread
{
public:

    ThreadHistory() :
        Thread("history")
    {
        mHistory = new std::vector<int>();
    }

    ~ThreadHistory()
    {
        delete mHistory;
    }

    virtual int
    GetShot(int position)
    {
        if ((position < 0) || (position >= mHistory->size()))
            return -1;
        return (*mHistory)[position];
    }

    virtual int
    GetLength()
    {
        return mHistory->size();
    }

    virtual int
    GetShotAt(int shot, int offset)
    {
        int r = GetShotPosition(shot);
        if (r == -1)
            return -1;
        int dst = r + offset;
        if ((dst < 0) || (dst >= mHistory->size()))
            return -1;
        return (*mHistory)[dst];
    }

    virtual int
    GetShotPosition(int shot)
    {
        for (int i = 0; i < mHistory->size(); i++)
        {
            if ( (*mHistory)[i] == shot)
                return i;
        }
        return -1;
    }

    void
    Remove(int shot)
    {
        std::vector<int>::iterator i = mHistory->begin();
        while (i != mHistory->end())
        {
            if (*i == shot)
                i = mHistory->erase(i);
            else
                i++;
        }
    }

    void
    Push(int shot)
    {
        if (mHistory->size() > 0 && (*mHistory)[mHistory->size() - 1] == shot)
            return;
        ILOG_DEBUG("adding " << shot << " to history");
        mHistory->push_back(shot);
    }

    virtual int
    GetType()
    {
        return HISTORY;
    }

private:

    std::vector<int> *mHistory;

    ILOG_VAR_DEC;

};
ILOG_VAR_INIT(ThreadHistory, Core.Trec);


} // namespace Trec
} // namespace Core
} // namespace Impala

#endif

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