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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_LOGSEGMENT_H
#define CEPH_LOGSEGMENT_H
#include "include/elist.h"
#include "include/interval_set.h"
#include "include/Context.h"
#include "MDSContext.h"
#include "mdstypes.h"
#include "CInode.h"
#include "CDentry.h"
#include "CDir.h"
#include "include/unordered_set.h"
using ceph::unordered_set;
class CDir;
class CInode;
class CDentry;
class MDSRank;
struct MDPeerUpdate;
class LogSegment {
public:
using seq_t = uint64_t;
LogSegment(uint64_t _seq, loff_t off=-1) :
seq(_seq), offset(off), end(off),
dirty_dirfrags(member_offset(CDir, item_dirty)),
new_dirfrags(member_offset(CDir, item_new)),
dirty_inodes(member_offset(CInode, item_dirty)),
dirty_dentries(member_offset(CDentry, item_dirty)),
open_files(member_offset(CInode, item_open_file)),
dirty_parent_inodes(member_offset(CInode, item_dirty_parent)),
dirty_dirfrag_dir(member_offset(CInode, item_dirty_dirfrag_dir)),
dirty_dirfrag_nest(member_offset(CInode, item_dirty_dirfrag_nest)),
dirty_dirfrag_dirfragtree(member_offset(CInode, item_dirty_dirfrag_dirfragtree))
{}
void try_to_expire(MDSRank *mds, MDSGatherBuilder &gather_bld, int op_prio);
void purge_inodes_finish(interval_set<inodeno_t>& inos){
purging_inodes.subtract(inos);
if (NULL != purged_cb &&
purging_inodes.empty())
purged_cb->complete(0);
}
void set_purged_cb(MDSContext* c){
ceph_assert(purged_cb == NULL);
purged_cb = c;
}
void wait_for_expiry(MDSContext *c)
{
ceph_assert(c != NULL);
expiry_waiters.push_back(c);
}
const seq_t seq;
uint64_t offset, end;
int num_events = 0;
// dirty items
elist<CDir*> dirty_dirfrags, new_dirfrags;
elist<CInode*> dirty_inodes;
elist<CDentry*> dirty_dentries;
elist<CInode*> open_files;
elist<CInode*> dirty_parent_inodes;
elist<CInode*> dirty_dirfrag_dir;
elist<CInode*> dirty_dirfrag_nest;
elist<CInode*> dirty_dirfrag_dirfragtree;
set<CInode*> truncating_inodes;
interval_set<inodeno_t> purging_inodes;
MDSContext* purged_cb = nullptr;
map<int, ceph::unordered_set<version_t> > pending_commit_tids; // mdstable
set<metareqid_t> uncommitted_leaders;
set<metareqid_t> uncommitted_peers;
set<dirfrag_t> uncommitted_fragments;
// client request ids
map<int, ceph_tid_t> last_client_tids;
// potentially dirty sessions
std::set<entity_name_t> touched_sessions;
// table version
version_t inotablev = 0;
version_t sessionmapv = 0;
map<int,version_t> tablev;
MDSContext::vec expiry_waiters;
};
#endif
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