blob: 5d5fb053521beed4d6c9fc645e05e8c788daa495 (
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
76
77
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_LIBRBD_IO_IMAGE_DISPATCHER_H
#define CEPH_LIBRBD_IO_IMAGE_DISPATCHER_H
#include "include/int_types.h"
#include "common/ceph_mutex.h"
#include "librbd/io/Dispatcher.h"
#include "librbd/io/ImageDispatchInterface.h"
#include "librbd/io/ImageDispatchSpec.h"
#include "librbd/io/ImageDispatcherInterface.h"
#include "librbd/io/Types.h"
#include <atomic>
#include <map>
struct Context;
namespace librbd {
struct ImageCtx;
namespace io {
template <typename> struct QosImageDispatch;
template <typename> struct WriteBlockImageDispatch;
template <typename ImageCtxT = ImageCtx>
class ImageDispatcher : public Dispatcher<ImageCtxT, ImageDispatcherInterface> {
public:
ImageDispatcher(ImageCtxT* image_ctx);
void invalidate_cache(Context* on_finish) override;
void shut_down(Context* on_finish) override;
void apply_qos_schedule_tick_min(uint64_t tick) override;
void apply_qos_limit(uint64_t flag, uint64_t limit, uint64_t burst,
uint64_t burst_seconds) override;
void apply_qos_exclude_ops(uint64_t exclude_ops) override;
bool writes_blocked() const override;
int block_writes() override;
void block_writes(Context *on_blocked) override;
void unblock_writes() override;
void wait_on_writes_unblocked(Context *on_unblocked) override;
void remap_to_physical(Extents& image_extents, ImageArea area) override;
ImageArea remap_to_logical(Extents& image_extents) override;
protected:
bool send_dispatch(
ImageDispatchInterface* image_dispatch,
ImageDispatchSpec* image_dispatch_spec) override;
private:
struct SendVisitor;
struct PreprocessVisitor;
using typename Dispatcher<ImageCtxT, ImageDispatcherInterface>::C_InvalidateCache;
std::atomic<uint64_t> m_next_tid{0};
QosImageDispatch<ImageCtxT>* m_qos_image_dispatch = nullptr;
WriteBlockImageDispatch<ImageCtxT>* m_write_block_dispatch = nullptr;
bool preprocess(ImageDispatchSpec* image_dispatch_spec);
};
} // namespace io
} // namespace librbd
extern template class librbd::io::ImageDispatcher<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_IO_IMAGE_DISPATCHER_H
|
