ceph/src/common/PriorityCache.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2018 Red Hat
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  *
  13  */
  14
  15 #include "PriorityCache.h"
  16
  17 namespace PriorityCache {
  18   int64_t get_chunk(uint64_t usage, uint64_t chunk_bytes) {
  19     // Add a chunk of headroom and round up to the near chunk
  20     uint64_t val = usage + chunk_bytes;
  21     uint64_t r = (val) % chunk_bytes;
  22     if (r > 0)
  23       val = val + chunk_bytes - r;
  24     return val;
  25   }
  26
  27   PriCache::~PriCache() {
  28   }
  29 }