Fix some bugs when testing opensds ansible
[stor4nfv.git] / src / ceph / src / librbd / AsyncObjectThrottle.h
1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
3 #ifndef CEPH_LIBRBD_ASYNC_OBJECT_THROTTLE_H
4 #define CEPH_LIBRBD_ASYNC_OBJECT_THROTTLE_H
5
6 #include "include/int_types.h"
7 #include "include/Context.h"
8
9 #include <boost/function.hpp>
10
11 namespace librbd
12 {
13 template <typename ImageCtxT> class AsyncRequest;
14 class ProgressContext;
15 struct ImageCtx;
16
17 class AsyncObjectThrottleFinisher {
18 public:
19   virtual ~AsyncObjectThrottleFinisher() {};
20   virtual void finish_op(int r) = 0;
21 };
22
23 template <typename ImageCtxT = ImageCtx>
24 class C_AsyncObjectThrottle : public Context {
25 public:
26   C_AsyncObjectThrottle(AsyncObjectThrottleFinisher &finisher,
27                         ImageCtxT &image_ctx)
28     : m_image_ctx(image_ctx), m_finisher(finisher) {
29   }
30
31   virtual int send() = 0;
32
33 protected:
34   ImageCtxT &m_image_ctx;
35
36   void finish(int r) override {
37     m_finisher.finish_op(r);
38   }
39
40 private:
41   AsyncObjectThrottleFinisher &m_finisher;
42 };
43
44 template <typename ImageCtxT = ImageCtx>
45 class AsyncObjectThrottle : public AsyncObjectThrottleFinisher {
46 public:
47   typedef boost::function<
48     C_AsyncObjectThrottle<ImageCtxT>* (AsyncObjectThrottle&,
49                                        uint64_t)> ContextFactory;
50
51   AsyncObjectThrottle(const AsyncRequest<ImageCtxT> *async_request,
52                       ImageCtxT &image_ctx,
53                       const ContextFactory& context_factory, Context *ctx,
54                       ProgressContext *prog_ctx, uint64_t object_no,
55                       uint64_t end_object_no);
56
57   void start_ops(uint64_t max_concurrent);
58   void finish_op(int r) override;
59
60 private:
61   Mutex m_lock;
62   const AsyncRequest<ImageCtxT> *m_async_request;
63   ImageCtxT &m_image_ctx;
64   ContextFactory m_context_factory;
65   Context *m_ctx;
66   ProgressContext *m_prog_ctx;
67   uint64_t m_object_no;
68   uint64_t m_end_object_no;
69   uint64_t m_current_ops;
70   int m_ret;
71
72   void start_next_op();
73 };
74
75 } // namespace librbd
76
77 extern template class librbd::AsyncObjectThrottle<librbd::ImageCtx>;
78
79 #endif // CEPH_LIBRBD_ASYNC_OBJECT_THROTTLE_H