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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include <errno.h> | |
5 | #include <time.h> | |
6 | ||
7 | #include <thread> | |
8 | #include "common/debug.h" | |
9 | #include "common/Cond.h" | |
10 | #include "common/Finisher.h" | |
11 | #include "common/Mutex.h" | |
12 | #include "include/assert.h" | |
13 | #include "common/ceph_time.h" | |
14 | ||
15 | #include "FakeWriteback.h" | |
16 | ||
17 | #define dout_subsys ceph_subsys_objectcacher | |
18 | #undef dout_prefix | |
19 | #define dout_prefix *_dout << "FakeWriteback(" << this << ") " | |
20 | ||
21 | class C_Delay : public Context { | |
22 | CephContext *m_cct; | |
23 | Context *m_con; | |
24 | ceph::timespan m_delay; | |
25 | Mutex *m_lock; | |
26 | bufferlist *m_bl; | |
27 | uint64_t m_off; | |
28 | ||
29 | public: | |
30 | C_Delay(CephContext *cct, Context *c, Mutex *lock, uint64_t off, | |
31 | bufferlist *pbl, uint64_t delay_ns=0) | |
32 | : m_cct(cct), m_con(c), m_delay(delay_ns * std::chrono::nanoseconds(1)), | |
33 | m_lock(lock), m_bl(pbl), m_off(off) {} | |
34 | void finish(int r) override { | |
35 | std::this_thread::sleep_for(m_delay); | |
36 | if (m_bl) { | |
37 | buffer::ptr bp(r); | |
38 | bp.zero(); | |
39 | m_bl->append(bp); | |
40 | ldout(m_cct, 20) << "finished read " << m_off << "~" << r << dendl; | |
41 | } | |
42 | m_lock->Lock(); | |
43 | m_con->complete(r); | |
44 | m_lock->Unlock(); | |
45 | } | |
46 | }; | |
47 | ||
48 | FakeWriteback::FakeWriteback(CephContext *cct, Mutex *lock, uint64_t delay_ns) | |
49 | : m_cct(cct), m_lock(lock), m_delay_ns(delay_ns) | |
50 | { | |
51 | m_finisher = new Finisher(cct); | |
52 | m_finisher->start(); | |
53 | } | |
54 | ||
55 | FakeWriteback::~FakeWriteback() | |
56 | { | |
57 | m_finisher->stop(); | |
58 | delete m_finisher; | |
59 | } | |
60 | ||
61 | void FakeWriteback::read(const object_t& oid, uint64_t object_no, | |
62 | const object_locator_t& oloc, | |
63 | uint64_t off, uint64_t len, snapid_t snapid, | |
64 | bufferlist *pbl, uint64_t trunc_size, | |
31f18b77 FG |
65 | __u32 trunc_seq, int op_flags, |
66 | const ZTracer::Trace &parent_trace, | |
67 | Context *onfinish) | |
7c673cae FG |
68 | { |
69 | C_Delay *wrapper = new C_Delay(m_cct, onfinish, m_lock, off, pbl, | |
70 | m_delay_ns); | |
71 | m_finisher->queue(wrapper, len); | |
72 | } | |
73 | ||
74 | ceph_tid_t FakeWriteback::write(const object_t& oid, | |
75 | const object_locator_t& oloc, | |
76 | uint64_t off, uint64_t len, | |
77 | const SnapContext& snapc, | |
78 | const bufferlist &bl, ceph::real_time mtime, | |
79 | uint64_t trunc_size, __u32 trunc_seq, | |
31f18b77 FG |
80 | ceph_tid_t journal_tid, |
81 | const ZTracer::Trace &parent_trace, | |
82 | Context *oncommit) | |
7c673cae FG |
83 | { |
84 | C_Delay *wrapper = new C_Delay(m_cct, oncommit, m_lock, off, NULL, | |
85 | m_delay_ns); | |
86 | m_finisher->queue(wrapper, 0); | |
31f18b77 | 87 | return ++m_tid; |
7c673cae FG |
88 | } |
89 | ||
90 | bool FakeWriteback::may_copy_on_write(const object_t&, uint64_t, uint64_t, | |
91 | snapid_t) | |
92 | { | |
93 | return false; | |
94 | } |