mirror of
https://github.com/ceph/ceph
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07ac5d3e74
git-svn-id: https://ceph.svn.sf.net/svnroot/ceph@1068 29311d96-e01e-0410-9327-a35deaab8ce9
98 lines
2.2 KiB
C++
98 lines
2.2 KiB
C++
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
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/*
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* Ceph - scalable distributed file system
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*
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* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
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*
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* This is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software
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* Foundation. See file COPYING.
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*
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*/
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#ifndef __EDIRUPDATE_H
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#define __EDIRUPDATE_H
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#include <assert.h>
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#include "config.h"
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#include "include/types.h"
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#include "../LogEvent.h"
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#include "ETrace.h"
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#include "../CDir.h"
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#include "../MDCache.h"
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#include "../MDStore.h"
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class EDirUpdate : public LogEvent {
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protected:
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ETrace trace;
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inodeno_t dirino;
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version_t version;
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public:
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EDirUpdate(CDir *dir) : LogEvent(EVENT_DIRUPDATE),
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trace(dir->inode) {
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this->dirino = dir->ino();
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version = dir->get_version();
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}
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EDirUpdate() : LogEvent(EVENT_DIRUPDATE) {
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}
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void print(ostream& out) {
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out << "up dir " << dirino << " "
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<< trace
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<< "/ v " << version;
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}
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virtual void encode_payload(bufferlist& bl) {
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trace.encode(bl);
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bl.append((char*)&version, sizeof(version));
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bl.append((char*)&dirino, sizeof(dirino));
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}
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void decode_payload(bufferlist& bl, int& off) {
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trace.decode(bl, off);
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bl.copy(off, sizeof(version), (char*)&version);
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off += sizeof(version);
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bl.copy(off, sizeof(dirino), (char*)&dirino);
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off += sizeof(dirino);
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}
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virtual bool can_expire(MDS *mds) {
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// am i obsolete?
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CInode *in = mds->mdcache->get_inode(dirino);
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if (!in) return true;
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CDir *dir = in->dir;
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if (!dir) return true;
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dout(10) << "EDirUpdate v " << version << " on dir " << *dir << endl;
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if (!dir->is_auth()) return true; // not mine!
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if (dir->is_frozen()) return true; // frozen -> exporting -> obsolete? FIXME
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if (!dir->is_dirty()) return true;
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if (dir->get_committing_version() > version)
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return true;
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return false;
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}
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virtual void retire(MDS *mds, Context *c) {
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// commit directory
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CInode *in = mds->mdcache->get_inode(dirino);
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assert(in);
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CDir *dir = in->dir;
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assert(dir);
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dout(10) << "EDirUpdate committing dir " << *dir << endl;
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mds->mdstore->commit_dir(dir, c);
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}
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};
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#endif
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