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

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Thread.h

Go to the documentation of this file.

#ifndef Impala_Core_Trec_Thread_h
#define Impala_Core_Trec_Thread_h

#include <string>

namespace Impala
{
namespace Core
{
namespace Trec
{


class Thread
{
public:

    Thread(CString name)
    {
        mName = name;
    }

    String
    GetName()
    {
        return mName;
    }

    // all functions below return -1 if not applicable

    // Set the origin in "dynamic" threads
    virtual void
    SetOrigin(int shot)
    {
    }

    virtual int
    GetFirstShot()
    {
        return GetShot(0);
    }

    virtual int
    GetShot(int position) = 0;

    virtual int
    GetLength() = 0;

    virtual bool
    Contains(int shot)
    {
        return GetShotPosition(shot) != -1;
    }

    virtual int
    GetNextShot(int shot)
    {
        return GetShotAt(shot, 1);
    }

    virtual int
    GetPrevShot(int shot)
    {
        return GetShotAt(shot, -1);
    }

    virtual int
    GetShotAt(int shot, int offset) = 0;

    virtual int
    GetShotAtWhileSkipping(int shot, int offset, Thread* skipthese)
    {
        if (offset == 0)
            return GetShotAt(shot, offset);

        int pos = GetShotPosition(shot);
        if (pos == -1)
            return -1;

        int dir = 1;
        if (offset < 0)
        {
            dir = -1;
            offset = -offset;
        }
        int len = GetLength();
        while (offset > 0)
        {
            pos += dir;
            if ((pos < 0) || (pos >= len))
                return -1;
            int shot = GetShot(pos);
            if (!skipthese->Contains(shot))
                offset--;
        }
        return GetShot(pos);
    }

    virtual int
    GetShotPosition(int shot) = 0;

    virtual int
    GetType()
    {
        return UNDEFINED;
    }

protected:

    String mName;

public:
    static const int UNDEFINED = 0;
    static const int RANK = 1;
    static const int SHOTS = 2;
    static const int BOOKMARK = 3;
    static const int TIME = 4;
    static const int VISUAL = 5;
    static const int HISTORY = 6;
    static const int VIRTUAL = 7;

    ILOG_VAR_DEC;
};
ILOG_VAR_INIT(Thread, Core.Trec);


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

#endif

---