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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 | #ifndef CEPH_OBJECT_H | |
16 | #define CEPH_OBJECT_H | |
17 | ||
18 | #include <stdint.h> | |
19 | #include <stdio.h> | |
20 | ||
21 | #include <iosfwd> | |
22 | #include <iomanip> | |
7c673cae | 23 | |
11fdf7f2 | 24 | #include "include/rados.h" |
7c673cae FG |
25 | #include "include/unordered_map.h" |
26 | ||
27 | #include "hash.h" | |
28 | #include "encoding.h" | |
29 | #include "ceph_hash.h" | |
30 | #include "cmp.h" | |
31 | ||
11fdf7f2 TL |
32 | using namespace std; |
33 | ||
7c673cae FG |
34 | struct object_t { |
35 | string name; | |
36 | ||
37 | object_t() {} | |
38 | // cppcheck-suppress noExplicitConstructor | |
39 | object_t(const char *s) : name(s) {} | |
40 | // cppcheck-suppress noExplicitConstructor | |
41 | object_t(const string& s) : name(s) {} | |
42 | ||
43 | void swap(object_t& o) { | |
44 | name.swap(o.name); | |
45 | } | |
46 | void clear() { | |
47 | name.clear(); | |
48 | } | |
49 | ||
50 | void encode(bufferlist &bl) const { | |
11fdf7f2 TL |
51 | using ceph::encode; |
52 | encode(name, bl); | |
7c673cae | 53 | } |
11fdf7f2 TL |
54 | void decode(bufferlist::const_iterator &bl) { |
55 | using ceph::decode; | |
56 | decode(name, bl); | |
7c673cae FG |
57 | } |
58 | }; | |
59 | WRITE_CLASS_ENCODER(object_t) | |
60 | ||
61 | inline bool operator==(const object_t& l, const object_t& r) { | |
62 | return l.name == r.name; | |
63 | } | |
64 | inline bool operator!=(const object_t& l, const object_t& r) { | |
65 | return l.name != r.name; | |
66 | } | |
67 | inline bool operator>(const object_t& l, const object_t& r) { | |
68 | return l.name > r.name; | |
69 | } | |
70 | inline bool operator<(const object_t& l, const object_t& r) { | |
71 | return l.name < r.name; | |
72 | } | |
73 | inline bool operator>=(const object_t& l, const object_t& r) { | |
74 | return l.name >= r.name; | |
75 | } | |
76 | inline bool operator<=(const object_t& l, const object_t& r) { | |
77 | return l.name <= r.name; | |
78 | } | |
79 | inline ostream& operator<<(ostream& out, const object_t& o) { | |
80 | return out << o.name; | |
81 | } | |
82 | ||
83 | namespace std { | |
84 | template<> struct hash<object_t> { | |
85 | size_t operator()(const object_t& r) const { | |
86 | //static hash<string> H; | |
87 | //return H(r.name); | |
88 | return ceph_str_hash_linux(r.name.c_str(), r.name.length()); | |
89 | } | |
90 | }; | |
91 | } // namespace std | |
92 | ||
93 | ||
94 | struct file_object_t { | |
95 | uint64_t ino, bno; | |
96 | mutable char buf[34]; | |
97 | ||
98 | file_object_t(uint64_t i=0, uint64_t b=0) : ino(i), bno(b) { | |
99 | buf[0] = 0; | |
100 | } | |
101 | ||
102 | const char *c_str() const { | |
103 | if (!buf[0]) | |
104 | snprintf(buf, sizeof(buf), "%llx.%08llx", (long long unsigned)ino, (long long unsigned)bno); | |
105 | return buf; | |
106 | } | |
107 | ||
108 | operator object_t() { | |
109 | return object_t(c_str()); | |
110 | } | |
111 | }; | |
112 | ||
113 | ||
114 | // --------------------------- | |
115 | // snaps | |
116 | ||
117 | struct snapid_t { | |
118 | uint64_t val; | |
119 | // cppcheck-suppress noExplicitConstructor | |
120 | snapid_t(uint64_t v=0) : val(v) {} | |
121 | snapid_t operator+=(snapid_t o) { val += o.val; return *this; } | |
122 | snapid_t operator++() { ++val; return *this; } | |
123 | operator uint64_t() const { return val; } | |
124 | }; | |
125 | ||
126 | inline void encode(snapid_t i, bufferlist &bl) { encode(i.val, bl); } | |
11fdf7f2 | 127 | inline void decode(snapid_t &i, bufferlist::const_iterator &p) { decode(i.val, p); } |
7c673cae FG |
128 | |
129 | template<> | |
130 | struct denc_traits<snapid_t> { | |
131 | static constexpr bool supported = true; | |
132 | static constexpr bool featured = false; | |
133 | static constexpr bool bounded = true; | |
31f18b77 | 134 | static constexpr bool need_contiguous = true; |
7c673cae FG |
135 | static void bound_encode(const snapid_t& o, size_t& p) { |
136 | denc(o.val, p); | |
137 | } | |
138 | static void encode(const snapid_t &o, buffer::list::contiguous_appender& p) { | |
139 | denc(o.val, p); | |
140 | } | |
11fdf7f2 | 141 | static void decode(snapid_t& o, buffer::ptr::const_iterator &p) { |
7c673cae FG |
142 | denc(o.val, p); |
143 | } | |
144 | }; | |
145 | ||
31f18b77 | 146 | inline ostream& operator<<(ostream& out, const snapid_t& s) { |
7c673cae FG |
147 | if (s == CEPH_NOSNAP) |
148 | return out << "head"; | |
149 | else if (s == CEPH_SNAPDIR) | |
150 | return out << "snapdir"; | |
151 | else | |
152 | return out << hex << s.val << dec; | |
153 | } | |
154 | ||
155 | ||
156 | struct sobject_t { | |
157 | object_t oid; | |
158 | snapid_t snap; | |
159 | ||
160 | sobject_t() : snap(0) {} | |
161 | sobject_t(object_t o, snapid_t s) : oid(o), snap(s) {} | |
162 | ||
163 | void swap(sobject_t& o) { | |
164 | oid.swap(o.oid); | |
165 | snapid_t t = snap; | |
166 | snap = o.snap; | |
167 | o.snap = t; | |
168 | } | |
169 | ||
170 | void encode(bufferlist& bl) const { | |
11fdf7f2 TL |
171 | using ceph::encode; |
172 | encode(oid, bl); | |
173 | encode(snap, bl); | |
7c673cae | 174 | } |
11fdf7f2 TL |
175 | void decode(bufferlist::const_iterator& bl) { |
176 | using ceph::decode; | |
177 | decode(oid, bl); | |
178 | decode(snap, bl); | |
7c673cae FG |
179 | } |
180 | }; | |
181 | WRITE_CLASS_ENCODER(sobject_t) | |
182 | ||
183 | inline bool operator==(const sobject_t &l, const sobject_t &r) { | |
184 | return l.oid == r.oid && l.snap == r.snap; | |
185 | } | |
186 | inline bool operator!=(const sobject_t &l, const sobject_t &r) { | |
187 | return l.oid != r.oid || l.snap != r.snap; | |
188 | } | |
189 | inline bool operator>(const sobject_t &l, const sobject_t &r) { | |
190 | return l.oid > r.oid || (l.oid == r.oid && l.snap > r.snap); | |
191 | } | |
192 | inline bool operator<(const sobject_t &l, const sobject_t &r) { | |
193 | return l.oid < r.oid || (l.oid == r.oid && l.snap < r.snap); | |
194 | } | |
195 | inline bool operator>=(const sobject_t &l, const sobject_t &r) { | |
196 | return l.oid > r.oid || (l.oid == r.oid && l.snap >= r.snap); | |
197 | } | |
198 | inline bool operator<=(const sobject_t &l, const sobject_t &r) { | |
199 | return l.oid < r.oid || (l.oid == r.oid && l.snap <= r.snap); | |
200 | } | |
201 | inline ostream& operator<<(ostream& out, const sobject_t &o) { | |
202 | return out << o.oid << "/" << o.snap; | |
203 | } | |
204 | namespace std { | |
205 | template<> struct hash<sobject_t> { | |
206 | size_t operator()(const sobject_t &r) const { | |
207 | static hash<object_t> H; | |
208 | static rjhash<uint64_t> I; | |
209 | return H(r.oid) ^ I(r.snap); | |
210 | } | |
211 | }; | |
212 | } // namespace std | |
213 | ||
214 | #endif |