one_shot_timer.h

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#ifndef ACTIONLIB__ONE_SHOT_TIMER_H_
#define ACTIONLIB__ONE_SHOT_TIMER_H_
 
#include "ros/ros.h"
#include "boost/bind/bind.hpp"
 
class OneShotTimer
{
public:
  OneShotTimer()
  : active_(false) {}
 
  void cb(const ros::TimerEvent & e)
  {
    if (active_) {
      active_ = false;
 
      if (callback_) {
        callback_(e);
      } else {
        ROS_ERROR_NAMED("actionlib", "Got a nullptr Timer OneShotTimer Callback");
      }
    }
  }
 
  boost::function<void(const ros::TimerEvent & e)> getCb()
  {
    return boost::bind(&OneShotTimer::cb, this, boost::placeholders::_1);
  }
 
  void registerOneShotCb(boost::function<void(const ros::TimerEvent & e)> callback)
  {
    callback_ = callback;
  }
 
  void stop()
  {
    // timer_.stop();
    active_ = false;
  }
 
  const ros::Timer & operator=(const ros::Timer & rhs)
  {
    active_ = true;
    timer_ = rhs;
    return timer_;
  }
 
private:
  ros::Timer timer_;
  bool active_;
  boost::function<void(const ros::TimerEvent & e)> callback_;
};
 
 
#endif  // ACTIONLIB__ONE_SHOT_TIMER_H_