blob: 15d4b2c12b0df81eac41a828d60635c405e11329 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_LIBRBD_EXCLUSIVE_LOCK_PRE_ACQUIRE_REQUEST_H
#define CEPH_LIBRBD_EXCLUSIVE_LOCK_PRE_ACQUIRE_REQUEST_H
#include "include/int_types.h"
#include "include/buffer.h"
#include "librbd/ImageCtx.h"
#include "msg/msg_types.h"
#include <string>
class Context;
namespace librbd {
namespace exclusive_lock {
template <typename ImageCtxT = ImageCtx>
class PreAcquireRequest {
public:
static PreAcquireRequest* create(ImageCtxT &image_ctx, Context *on_finish);
~PreAcquireRequest();
void send();
private:
/**
* @verbatim
*
* <start>
* |
* v
* PREPARE_LOCK
* |
* v
* FLUSH_NOTIFIES
* |
* |
* |
v
* <finish>
*
* @endverbatim
*/
PreAcquireRequest(ImageCtxT &image_ctx, Context *on_finish);
ImageCtxT &m_image_ctx;
Context *m_on_finish;
int m_error_result;
void send_prepare_lock();
void handle_prepare_lock(int r);
void send_flush_notifies();
void handle_flush_notifies(int r);
void finish();
void save_result(int result) {
if (m_error_result == 0 && result < 0) {
m_error_result = result;
}
}
};
} // namespace exclusive_lock
} // namespace librbd
extern template class librbd::exclusive_lock::PreAcquireRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_EXCLUSIVE_LOCK_ACQUIRE_REQUEST_H
|
