ceph/src/librbd/cache/pwl/ReadRequest.h

   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_CACHE_RWL_READ_REQUEST_H
   5 #define CEPH_LIBRBD_CACHE_RWL_READ_REQUEST_H
   6
   7 #include "include/Context.h"
   8 #include "librbd/cache/pwl/Types.h"
   9
  10 namespace librbd {
  11 namespace cache {
  12 namespace pwl {
  13
  14 typedef std::vector<std::shared_ptr<pwl::ImageExtentBuf>> ImageExtentBufs;
  15
  16 class C_ReadRequest : public Context {
  17 public:
  18   io::Extents miss_extents; // move back to caller
  19   ImageExtentBufs read_extents;
  20   bufferlist miss_bl;
  21
  22   C_ReadRequest(
  23       CephContext *cct, utime_t arrived, PerfCounters *perfcounter,
  24       bufferlist *out_bl, Context *on_finish)
  25     : m_cct(cct), m_on_finish(on_finish), m_out_bl(out_bl),
  26       m_arrived_time(arrived), m_perfcounter(perfcounter) {}
  27   ~C_ReadRequest() {}
  28
  29   const char *get_name() const {
  30     return "C_ReadRequest";
  31   }
  32
  33 protected:
  34   CephContext *m_cct;
  35   Context *m_on_finish;
  36   bufferlist *m_out_bl;
  37   utime_t m_arrived_time;
  38   PerfCounters *m_perfcounter;
  39 };
  40
  41 } // namespace pwl
  42 } // namespace cache
  43 } // namespace librbd
  44
  45 #endif // CEPH_LIBRBD_CACHE_RWL_READ_REQUEST_H