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CoWork

 

Using CoWork for loop parallelisation

 

 

main.cpp

 

#include <CtrlLib/CtrlLib.h>

 

using namespace Upp;

 

class App : public TopWindow {

public:

    virtual void LeftDown(Point, dword);

    virtual void Paint(Draw& w);

 

private:

    String text;

    bool   cowork;

    int    phase;

 

    void   SyncTitle();

 

public:

    typedef App CLASSNAME;

 

    App& Text(const String& t)     { text = t; Refresh(); return *this; }

 

    App();

};

 

App::App()

{

    BackPaint();

    Zoomable().Sizeable();

    cowork = true;

    phase = 0;

    SyncTitle();

}

 

void App::SyncTitle()

{

    Title(cowork ? "Now using all CPU cores (click the image for single core)"

                 : "Now using single CPU core (click the image to use all cores)");

}

 

void App::LeftDown(Point, dword)

{

    cowork = !cowork;

    SyncTitle();

}

 

void DoLine(RGBA *line, int phase, int y, Size sz)

{

    Point c = sz / 2;

    c = Point(int(sin((double)phase / 131) * c.x + c.x), int(sin((double)phase / 127) * c.y + c.y));

    int yy = (y - c.y) * (y - c.y);

    for(int x = 0; x < sz.cx; x++) {

        double d = (x - c.x) * (x - c.x) + yy;

        line[x] = GrayColor((int)(120 + 120 * sin(d / 1000 - (double)phase / 5)));

    }

}

 

void App::Paint(Draw& w)

{

    Size sz = GetSize();

    ImageBuffer ib(sz);

    if(cowork) {

        CoWork co;

        for(int y = 0; y < sz.cy; y++)

            co & [=, &ib] { DoLine(ib[y], phase, y, sz); };

    }

    else

        for(int y = 0; y < sz.cy; y++)

            DoLine(ib[y], phase, y, sz);

    w.DrawImage(0, 0, ib);

    Refresh();

    phase++;

}

 

GUI_APP_MAIN

{

    App().Run();

}

 

 

 

 

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