work_bound_expensive_operation_controller.h

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// Copyright 2015 Google Inc.

#ifndef PAGESPEED_CONTROLLER_WORK_BOUND_EXPENSIVE_OPERATION_CONTROLLER_H_
#define PAGESPEED_CONTROLLER_WORK_BOUND_EXPENSIVE_OPERATION_CONTROLLER_H_

#include "pagespeed/controller/expensive_operation_controller.h"
#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/function.h"
#include "pagespeed/kernel/base/statistics.h"

namespace net_instaweb {

class WorkBoundExpensiveOperationController
    : public ExpensiveOperationController {
 public:
  static const char kCurrentExpensiveOperations[];

  WorkBoundExpensiveOperationController(int max_expensive_operations,
                                        Statistics* stats);
  virtual ~WorkBoundExpensiveOperationController();

  virtual void ScheduleExpensiveOperation(Function* callback);
  virtual void NotifyExpensiveOperationComplete();

  static void InitStats(Statistics* stats);

 private:
  bool TryToWork();

  const int bound_;
  UpDownCounter* counter_;

  
};

}  

#endif