ceph/src/common/ThrottleInterface.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #pragma once
   5
   6 #include <cstdint>
   7
   8 class ThrottleInterface {
   9 public:
  10   virtual ~ThrottleInterface() {}
  11   /**
  12    * take the specified number of slots from the stock regardless the throttling
  13    * @param c number of slots to take
  14    * @returns the total number of taken slots
  15    */
  16   virtual int64_t take(int64_t c = 1) = 0;
  17   /**
  18    * put slots back to the stock
  19    * @param c number of slots to return
  20    * @returns number of requests being hold after this
  21    */
  22   virtual int64_t put(int64_t c = 1) = 0;
  23 };