ceph/src/mds/RecoveryQueue.h

   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) 2004-2006 Sage Weil <sage@newdream.net>
   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 //class C_MDC_Recover;
  16 //
  17 #ifndef RECOVERY_QUEUE_H
  18 #define RECOVERY_QUEUE_H
  19
  20 #include <set>
  21
  22 #include "include/common_fwd.h"
  23 #include "osdc/Filer.h"
  24
  25 class CInode;
  26 class MDSRank;
  27
  28 class RecoveryQueue {
  29 public:
  30   explicit RecoveryQueue(MDSRank *mds_);
  31
  32   void enqueue(CInode *in);
  33   void advance();
  34   void prioritize(CInode *in);   ///< do this inode now/soon
  35
  36   void set_logger(PerfCounters *p) {logger=p;}
  37
  38 private:
  39   friend class C_MDC_Recover;
  40
  41   void _start(CInode *in);  ///< start recovering this file
  42   void _recovered(CInode *in, int r, uint64_t size, utime_t mtime);
  43
  44   size_t file_recover_queue_size = 0;
  45   size_t file_recover_queue_front_size = 0;
  46
  47   elist<CInode*> file_recover_queue;   ///< the queue
  48   elist<CInode*> file_recover_queue_front;  ///< elevated priority items
  49   std::map<CInode*, bool> file_recovering; // inode -> need_restart
  50
  51   MDSRank *mds;
  52   PerfCounters *logger = nullptr;
  53   Filer filer;
  54 };
  55
  56 #endif // RECOVERY_QUEUE_H