ceph/src/client/MetaSession.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #ifndef CEPH_CLIENT_METASESSION_H
   5 #define CEPH_CLIENT_METASESSION_H
   6
   7 #include "include/types.h"
   8 #include "include/utime.h"
   9 #include "msg/Message.h"
  10 #include "include/xlist.h"
  11 #include "mds/mdstypes.h"
  12
  13 struct Cap;
  14 struct Inode;
  15 struct CapSnap;
  16 struct MetaRequest;
  17 class MClientCapRelease;
  18
  19 struct MetaSession {
  20   mds_rank_t mds_num;
  21   ConnectionRef con;
  22   version_t seq;
  23   uint64_t cap_gen;
  24   utime_t cap_ttl, last_cap_renew_request;
  25   uint64_t cap_renew_seq;
  26   int num_caps;
  27   entity_inst_t inst;
  28
  29   enum {
  30     STATE_NEW,
  31     STATE_OPENING,
  32     STATE_OPEN,
  33     STATE_CLOSING,
  34     STATE_CLOSED,
  35     STATE_STALE,
  36   } state;
  37
  38   int mds_state;
  39   bool readonly;
  40
  41   list<Context*> waiting_for_open;
  42
  43   xlist<Cap*> caps;
  44   xlist<Inode*> flushing_caps;
  45   xlist<MetaRequest*> requests;
  46   xlist<MetaRequest*> unsafe_requests;
  47   std::set<ceph_tid_t> flushing_caps_tids;
  48   std::set<Inode*> early_flushing_caps;
  49
  50   MClientCapRelease *release;
  51
  52   MetaSession()
  53     : mds_num(-1), con(NULL),
  54       seq(0), cap_gen(0), cap_renew_seq(0), num_caps(0),
  55       state(STATE_NEW), mds_state(0), readonly(false),
  56       release(NULL)
  57   {}
  58   ~MetaSession();
  59
  60   const char *get_state_name() const;
  61
  62   void dump(Formatter *f) const;
  63
  64   void enqueue_cap_release(inodeno_t ino, uint64_t cap_id, ceph_seq_t iseq,
  65       ceph_seq_t mseq, epoch_t osd_barrier);
  66 };
  67
  68 #endif