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#ifndef NV_CPU_DISPATCHER_H
#define NV_CPU_DISPATCHER_H

#include "NvTaskDefine.h"
#include "NvSimpleTypes.h"

namespace nvidia
{
    namespace task
    {

class NvBaseTask;

/** 
 \brief A CpuDispatcher is responsible for scheduling the execution of tasks passed to it by the SDK.

 A typical implementation would for example use a thread pool with the dispatcher
 pushing tasks onto worker thread queues or a global queue.

 @see NvBaseTask
 @see NvTask
 @see NvTaskManager
*/
class NvCpuDispatcher
{
public:
    /**
    \brief Called by the TaskManager when a task is to be queued for execution.
    
    Upon receiving a task, the dispatcher should schedule the task
    to run when resource is available.  After the task has been run,
    it should call the release() method and discard it's pointer.

    \param[in] task The task to be run.

    @see NvBaseTask
    */
    virtual void submitTask( NvBaseTask& task ) = 0;

    /**
    \brief Returns the number of available worker threads for this dispatcher.
    
    The SDK will use this count to control how many tasks are submitted. By
    matching the number of tasks with the number of execution units task
    overhead can be reduced.
    */
    virtual uint32_t getWorkerCount() const = 0;

    virtual ~NvCpuDispatcher() {}
};

} } // end nvidia namespace

#endif
