callback_queue_interface.h

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#ifndef ROSCPP_CALLBACK_QUEUE_INTERFACE_H
#define ROSCPP_CALLBACK_QUEUE_INTERFACE_H

#include <boost/shared_ptr.hpp>
#include "common.h"
#include "ros/types.h"

namespace ros
{

class ROSCPP_DECL CallbackInterface
{
public:
  enum CallResult
  {
    Success,   
    TryAgain,  
    Invalid,   
  };

  virtual ~CallbackInterface() {}

  virtual CallResult call() = 0;
  virtual bool ready() { return true; }
};
typedef boost::shared_ptr<CallbackInterface> CallbackInterfacePtr;

class CallbackQueueInterface
{
public:
  virtual ~CallbackQueueInterface() {}

  virtual void addCallback(const CallbackInterfacePtr& callback, uint64_t owner_id = 0) = 0;

  virtual void removeByID(uint64_t owner_id) = 0;
};

}

#endif