text: //
  //  KCSentinel.h
  //  Jade
  //
  //  Created by king on 16/6/15.
  //  Copyright © 2016年 KC. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface KCSentinel : NSObject
  
  @property (atomic, readonly) int32_t value;
  
  - (int32_t)increase;
  
  @end
  