]>
Commit | Line | Data |
---|---|---|
f67539c2 TL |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #ifndef CEPH_LIBRBD_IO_QUEUE_IMAGE_DISPATCH_H | |
5 | #define CEPH_LIBRBD_IO_QUEUE_IMAGE_DISPATCH_H | |
6 | ||
7 | #include "librbd/io/ImageDispatchInterface.h" | |
8 | #include "include/int_types.h" | |
9 | #include "include/buffer.h" | |
10 | #include "common/zipkin_trace.h" | |
11 | #include "common/Throttle.h" | |
12 | #include "librbd/io/ReadResult.h" | |
13 | #include "librbd/io/Types.h" | |
14 | #include <list> | |
15 | #include <set> | |
16 | ||
17 | struct Context; | |
18 | ||
19 | namespace librbd { | |
20 | ||
21 | struct ImageCtx; | |
22 | ||
23 | namespace io { | |
24 | ||
25 | struct AioCompletion; | |
26 | template <typename> class FlushTracker; | |
27 | ||
28 | template <typename ImageCtxT> | |
29 | class QueueImageDispatch : public ImageDispatchInterface { | |
30 | public: | |
31 | QueueImageDispatch(ImageCtxT* image_ctx); | |
32 | ~QueueImageDispatch(); | |
33 | ||
34 | ImageDispatchLayer get_dispatch_layer() const override { | |
35 | return IMAGE_DISPATCH_LAYER_QUEUE; | |
36 | } | |
37 | ||
38 | void shut_down(Context* on_finish) override; | |
39 | ||
40 | bool read( | |
41 | AioCompletion* aio_comp, Extents &&image_extents, | |
42 | ReadResult &&read_result, IOContext io_context, int op_flags, | |
43 | int read_flags, const ZTracer::Trace &parent_trace, uint64_t tid, | |
44 | std::atomic<uint32_t>* image_dispatch_flags, | |
45 | DispatchResult* dispatch_result, Context** on_finish, | |
46 | Context* on_dispatched) override; | |
47 | bool write( | |
48 | AioCompletion* aio_comp, Extents &&image_extents, bufferlist &&bl, | |
49 | IOContext io_context, int op_flags, const ZTracer::Trace &parent_trace, | |
50 | uint64_t tid, std::atomic<uint32_t>* image_dispatch_flags, | |
51 | DispatchResult* dispatch_result, Context** on_finish, | |
52 | Context* on_dispatched) override; | |
53 | bool discard( | |
54 | AioCompletion* aio_comp, Extents &&image_extents, | |
55 | uint32_t discard_granularity_bytes, IOContext io_context, | |
56 | const ZTracer::Trace &parent_trace, uint64_t tid, | |
57 | std::atomic<uint32_t>* image_dispatch_flags, | |
58 | DispatchResult* dispatch_result, Context** on_finish, | |
59 | Context* on_dispatched) override; | |
60 | bool write_same( | |
61 | AioCompletion* aio_comp, Extents &&image_extents, bufferlist &&bl, | |
62 | IOContext io_context, int op_flags, const ZTracer::Trace &parent_trace, | |
63 | uint64_t tid, std::atomic<uint32_t>* image_dispatch_flags, | |
64 | DispatchResult* dispatch_result, Context** on_finish, | |
65 | Context* on_dispatched) override; | |
66 | bool compare_and_write( | |
67 | AioCompletion* aio_comp, Extents &&image_extents, bufferlist &&cmp_bl, | |
68 | bufferlist &&bl, uint64_t *mismatch_offset, IOContext io_context, | |
69 | int op_flags, const ZTracer::Trace &parent_trace, uint64_t tid, | |
70 | std::atomic<uint32_t>* image_dispatch_flags, | |
71 | DispatchResult* dispatch_result, Context** on_finish, | |
72 | Context* on_dispatched) override; | |
73 | bool flush( | |
74 | AioCompletion* aio_comp, FlushSource flush_source, | |
75 | const ZTracer::Trace &parent_trace, uint64_t tid, | |
76 | std::atomic<uint32_t>* image_dispatch_flags, | |
77 | DispatchResult* dispatch_result, Context** on_finish, | |
78 | Context* on_dispatched) override; | |
79 | ||
80 | bool list_snaps( | |
81 | AioCompletion* aio_comp, Extents&& image_extents, SnapIds&& snap_ids, | |
82 | int list_snaps_flags, SnapshotDelta* snapshot_delta, | |
83 | const ZTracer::Trace &parent_trace, uint64_t tid, | |
84 | std::atomic<uint32_t>* image_dispatch_flags, | |
85 | DispatchResult* dispatch_result, Context** on_finish, | |
86 | Context* on_dispatched) override { | |
87 | return false; | |
88 | } | |
89 | ||
90 | bool invalidate_cache(Context* on_finish) override { | |
91 | return false; | |
92 | } | |
93 | ||
94 | private: | |
95 | ImageCtxT* m_image_ctx; | |
96 | ||
97 | FlushTracker<ImageCtxT>* m_flush_tracker; | |
98 | ||
99 | void handle_finished(int r, uint64_t tid); | |
100 | ||
101 | bool enqueue(bool read_op, uint64_t tid, DispatchResult* dispatch_result, | |
102 | Context** on_finish, Context* on_dispatched); | |
103 | ||
104 | }; | |
105 | ||
106 | } // namespace io | |
107 | } // namespace librbd | |
108 | ||
109 | extern template class librbd::io::QueueImageDispatch<librbd::ImageCtx>; | |
110 | ||
111 | #endif // CEPH_LIBRBD_IO_QUEUE_IMAGE_DISPATCH_H |