#ifndef KERNEL_H_
#define KERNEL_H_

#include "Referenced.h"

#include <vector>
#include <iostream>
#include <exception>
#include <list>

namespace BlueCore
{

class Kernel;

//-----------------------------------------------------------------------------
class KernelTask : public Referenced
{
  protected:

    ~KernelTask()
    {
    }

  public:

    KernelTask()
    {
    }

    virtual void tick()
    {
    }
};

//-----------------------------------------------------------------------------
class Kernel : public Referenced
{
  private:

    struct KernelTaskContainer
    {
        ref_ptr<KernelTask> _Task;
        int _Priority;

        KernelTaskContainer(KernelTask* task, int priority) :
          _Task(task), _Priority(priority)
        {
        }

        bool operator <(const KernelTaskContainer& other) const
        {
          return (_Priority > other._Priority);
        }
    };

    std::list<KernelTaskContainer> _Tasks;
    std::list<KernelTaskContainer> _AddedTasks;
    std::list<KernelTask*> _RemovedTasks;
    bool _Changed;
    bool _Clear;

  protected:

    ~Kernel()
    {
    }

  public:

    Kernel();

    void addTask(KernelTask* task, int priority);
    void removeTask(KernelTask* task);
    void removeAllTasks();
    void setTaskPriority(KernelTask* task, int priority);
    bool tick();
};

} // namespace BlueCore

#endif /*KERNEL_H_*/