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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 | ||
9f95a23c TL |
18 | #include <cstdint> |
19 | #include <cstdio> | |
7c673cae | 20 | #include <iomanip> |
f67539c2 | 21 | #include <iosfwd> |
9f95a23c | 22 | #include <string> |
f67539c2 TL |
23 | #include <string> |
24 | #include <string_view> | |
7c673cae | 25 | |
11fdf7f2 | 26 | #include "include/rados.h" |
7c673cae FG |
27 | #include "include/unordered_map.h" |
28 | ||
29 | #include "hash.h" | |
30 | #include "encoding.h" | |
31 | #include "ceph_hash.h" | |
7c673cae FG |
32 | |
33 | struct object_t { | |
9f95a23c | 34 | std::string name; |
7c673cae FG |
35 | |
36 | object_t() {} | |
37 | // cppcheck-suppress noExplicitConstructor | |
38 | object_t(const char *s) : name(s) {} | |
39 | // cppcheck-suppress noExplicitConstructor | |
9f95a23c | 40 | object_t(const std::string& s) : name(s) {} |
f67539c2 TL |
41 | object_t(std::string&& s) : name(std::move(s)) {} |
42 | object_t(std::string_view s) : name(s) {} | |
7c673cae | 43 | |
1e59de90 TL |
44 | auto operator<=>(const object_t&) const noexcept = default; |
45 | ||
7c673cae FG |
46 | void swap(object_t& o) { |
47 | name.swap(o.name); | |
48 | } | |
49 | void clear() { | |
50 | name.clear(); | |
51 | } | |
9f95a23c TL |
52 | |
53 | void encode(ceph::buffer::list &bl) const { | |
11fdf7f2 TL |
54 | using ceph::encode; |
55 | encode(name, bl); | |
7c673cae | 56 | } |
9f95a23c | 57 | void decode(ceph::buffer::list::const_iterator &bl) { |
11fdf7f2 TL |
58 | using ceph::decode; |
59 | decode(name, bl); | |
7c673cae FG |
60 | } |
61 | }; | |
62 | WRITE_CLASS_ENCODER(object_t) | |
63 | ||
9f95a23c | 64 | inline std::ostream& operator<<(std::ostream& out, const object_t& o) { |
7c673cae FG |
65 | return out << o.name; |
66 | } | |
67 | ||
68 | namespace std { | |
9f95a23c TL |
69 | template<> struct hash<object_t> { |
70 | size_t operator()(const object_t& r) const { | |
71 | //static hash<string> H; | |
72 | //return H(r.name); | |
73 | return ceph_str_hash_linux(r.name.c_str(), r.name.length()); | |
74 | } | |
75 | }; | |
7c673cae FG |
76 | } // namespace std |
77 | ||
78 | ||
79 | struct file_object_t { | |
80 | uint64_t ino, bno; | |
81 | mutable char buf[34]; | |
82 | ||
83 | file_object_t(uint64_t i=0, uint64_t b=0) : ino(i), bno(b) { | |
84 | buf[0] = 0; | |
85 | } | |
86 | ||
87 | const char *c_str() const { | |
88 | if (!buf[0]) | |
89 | snprintf(buf, sizeof(buf), "%llx.%08llx", (long long unsigned)ino, (long long unsigned)bno); | |
90 | return buf; | |
91 | } | |
92 | ||
93 | operator object_t() { | |
94 | return object_t(c_str()); | |
95 | } | |
96 | }; | |
97 | ||
98 | ||
99 | // --------------------------- | |
100 | // snaps | |
101 | ||
102 | struct snapid_t { | |
103 | uint64_t val; | |
104 | // cppcheck-suppress noExplicitConstructor | |
105 | snapid_t(uint64_t v=0) : val(v) {} | |
106 | snapid_t operator+=(snapid_t o) { val += o.val; return *this; } | |
107 | snapid_t operator++() { ++val; return *this; } | |
9f95a23c | 108 | operator uint64_t() const { return val; } |
7c673cae FG |
109 | }; |
110 | ||
9f95a23c TL |
111 | inline void encode(snapid_t i, ceph::buffer::list &bl) { |
112 | using ceph::encode; | |
113 | encode(i.val, bl); | |
114 | } | |
115 | inline void decode(snapid_t &i, ceph::buffer::list::const_iterator &p) { | |
116 | using ceph::decode; | |
117 | decode(i.val, p); | |
118 | } | |
7c673cae FG |
119 | |
120 | template<> | |
121 | struct denc_traits<snapid_t> { | |
122 | static constexpr bool supported = true; | |
123 | static constexpr bool featured = false; | |
124 | static constexpr bool bounded = true; | |
31f18b77 | 125 | static constexpr bool need_contiguous = true; |
7c673cae FG |
126 | static void bound_encode(const snapid_t& o, size_t& p) { |
127 | denc(o.val, p); | |
128 | } | |
9f95a23c | 129 | static void encode(const snapid_t &o, ceph::buffer::list::contiguous_appender& p) { |
7c673cae FG |
130 | denc(o.val, p); |
131 | } | |
9f95a23c | 132 | static void decode(snapid_t& o, ceph::buffer::ptr::const_iterator &p) { |
7c673cae FG |
133 | denc(o.val, p); |
134 | } | |
135 | }; | |
136 | ||
9f95a23c | 137 | inline std::ostream& operator<<(std::ostream& out, const snapid_t& s) { |
7c673cae FG |
138 | if (s == CEPH_NOSNAP) |
139 | return out << "head"; | |
140 | else if (s == CEPH_SNAPDIR) | |
141 | return out << "snapdir"; | |
142 | else | |
9f95a23c | 143 | return out << std::hex << s.val << std::dec; |
7c673cae FG |
144 | } |
145 | ||
146 | ||
147 | struct sobject_t { | |
148 | object_t oid; | |
149 | snapid_t snap; | |
150 | ||
151 | sobject_t() : snap(0) {} | |
152 | sobject_t(object_t o, snapid_t s) : oid(o), snap(s) {} | |
153 | ||
1e59de90 TL |
154 | auto operator<=>(const sobject_t&) const noexcept = default; |
155 | ||
7c673cae FG |
156 | void swap(sobject_t& o) { |
157 | oid.swap(o.oid); | |
158 | snapid_t t = snap; | |
159 | snap = o.snap; | |
160 | o.snap = t; | |
161 | } | |
162 | ||
9f95a23c | 163 | void encode(ceph::buffer::list& bl) const { |
11fdf7f2 TL |
164 | using ceph::encode; |
165 | encode(oid, bl); | |
166 | encode(snap, bl); | |
7c673cae | 167 | } |
9f95a23c | 168 | void decode(ceph::buffer::list::const_iterator& bl) { |
11fdf7f2 TL |
169 | using ceph::decode; |
170 | decode(oid, bl); | |
171 | decode(snap, bl); | |
7c673cae FG |
172 | } |
173 | }; | |
174 | WRITE_CLASS_ENCODER(sobject_t) | |
175 | ||
9f95a23c | 176 | inline std::ostream& operator<<(std::ostream& out, const sobject_t &o) { |
7c673cae FG |
177 | return out << o.oid << "/" << o.snap; |
178 | } | |
179 | namespace std { | |
9f95a23c TL |
180 | template<> struct hash<sobject_t> { |
181 | size_t operator()(const sobject_t &r) const { | |
182 | static hash<object_t> H; | |
183 | static rjhash<uint64_t> I; | |
184 | return H(r.oid) ^ I(r.snap); | |
185 | } | |
186 | }; | |
7c673cae FG |
187 | } // namespace std |
188 | ||
189 | #endif |