mirror of
https://github.com/ceph/ceph
synced 2025-02-02 08:22:36 +00:00
ed45b7d600
git-svn-id: https://ceph.svn.sf.net/svnroot/ceph@2161 29311d96-e01e-0410-9327-a35deaab8ce9
83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
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// vim: ts=8 sw=2 smarttab
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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 __OBJECT_H
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#define __OBJECT_H
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#include <stdint.h>
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#include <iostream>
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#include <iomanip>
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using namespace std;
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#include <ext/hash_map>
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using namespace __gnu_cxx;
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#include "hash.h"
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typedef uint32_t objectrev_t;
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struct object_t {
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static const uint32_t MAXREV = 0xffffffffU;
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uint64_t ino; // "file" identifier
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uint32_t bno; // "block" in that "file"
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objectrev_t rev; // revision. normally ctime (as epoch).
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object_t() : ino(0), bno(0), rev(0) {}
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object_t(uint64_t i, uint32_t b) : ino(i), bno(b), rev(0) {}
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object_t(uint64_t i, uint32_t b, uint32_t r) : ino(i), bno(b), rev(r) {}
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};
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inline bool operator==(const object_t l, const object_t r) {
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return memcmp(&l, &r, sizeof(l)) == 0;
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}
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inline bool operator!=(const object_t l, const object_t r) {
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return memcmp(&l, &r, sizeof(l)) != 0;
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}
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inline bool operator>(const object_t l, const object_t r) {
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return memcmp(&l, &r, sizeof(l)) > 0;
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}
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inline bool operator<(const object_t l, const object_t r) {
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return memcmp(&l, &r, sizeof(l)) < 0;
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}
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inline bool operator>=(const object_t l, const object_t r) {
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return memcmp(&l, &r, sizeof(l)) >= 0;
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}
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inline bool operator<=(const object_t l, const object_t r) {
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return memcmp(&l, &r, sizeof(l)) <= 0;
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}
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inline ostream& operator<<(ostream& out, const object_t o) {
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out << hex << o.ino << '.';
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out.setf(ios::right);
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out.fill('0');
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out << setw(8) << o.bno << dec;
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out.unsetf(ios::right);
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if (o.rev)
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out << '.' << o.rev;
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return out;
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}
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namespace __gnu_cxx {
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template<> struct hash<object_t> {
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size_t operator()(const object_t &r) const {
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static rjhash<uint64_t> H;
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static rjhash<uint32_t> I;
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return H(r.ino) ^ I(r.bno) ^ I(r.rev);
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}
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};
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}
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#endif
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