remove ceph code

[stor4nfv.git] / src / ceph / src / librbd / io / ImageRequestWQ.h

diff --git a/src/ceph/src/librbd/io/ImageRequestWQ.h b/src/ceph/src/librbd/io/ImageRequestWQ.h
deleted file mode 100644 (file)
index ad51b0f..0000000
--- a/src/ceph/src/librbd/io/ImageRequestWQ.h
+++ /dev/null
@@ -1,128 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#ifndef CEPH_LIBRBD_IO_IMAGE_REQUEST_WQ_H
-#define CEPH_LIBRBD_IO_IMAGE_REQUEST_WQ_H
-
-#include "include/Context.h"
-#include "common/RWLock.h"
-#include "common/WorkQueue.h"
-#include "librbd/io/Types.h"
-
-#include <list>
-#include <atomic>
-
-namespace librbd {
-
-class ImageCtx;
-
-namespace io {
-
-class AioCompletion;
-template <typename> class ImageRequest;
-class ReadResult;
-
-template <typename ImageCtxT = librbd::ImageCtx>
-class ImageRequestWQ
-  : public ThreadPool::PointerWQ<ImageRequest<ImageCtxT> > {
-public:
-  ImageRequestWQ(ImageCtxT *image_ctx, const string &name, time_t ti,
-                 ThreadPool *tp);
-
-  ssize_t read(uint64_t off, uint64_t len, ReadResult &&read_result,
-               int op_flags);
-  ssize_t write(uint64_t off, uint64_t len, bufferlist &&bl, int op_flags);
-  ssize_t discard(uint64_t off, uint64_t len, bool skip_partial_discard);
-  ssize_t writesame(uint64_t off, uint64_t len, bufferlist &&bl, int op_flags);
-  ssize_t compare_and_write(uint64_t off, uint64_t len,
-                            bufferlist &&cmp_bl, bufferlist &&bl,
-                            uint64_t *mismatch_off, int op_flags);
-
-  void aio_read(AioCompletion *c, uint64_t off, uint64_t len,
-                ReadResult &&read_result, int op_flags, bool native_async=true);
-  void aio_write(AioCompletion *c, uint64_t off, uint64_t len,
-                 bufferlist &&bl, int op_flags, bool native_async=true);
-  void aio_discard(AioCompletion *c, uint64_t off, uint64_t len,
-                   bool skip_partial_discard, bool native_async=true);
-  void aio_flush(AioCompletion *c, bool native_async=true);
-  void aio_writesame(AioCompletion *c, uint64_t off, uint64_t len,
-                     bufferlist &&bl, int op_flags, bool native_async=true);
-  void aio_compare_and_write(AioCompletion *c, uint64_t off,
-                             uint64_t len, bufferlist &&cmp_bl,
-                             bufferlist &&bl, uint64_t *mismatch_off,
-                             int op_flags, bool native_async=true);
-
-  using ThreadPool::PointerWQ<ImageRequest<ImageCtxT> >::drain;
-
-  using ThreadPool::PointerWQ<ImageRequest<ImageCtxT> >::empty;
-
-  void shut_down(Context *on_shutdown);
-
-  inline bool writes_blocked() const {
-    RWLock::RLocker locker(m_lock);
-    return (m_write_blockers > 0);
-  }
-
-  int block_writes();
-  void block_writes(Context *on_blocked);
-  void unblock_writes();
-
-  void set_require_lock(Direction direction, bool enabled);
-
-protected:
-  void *_void_dequeue() override;
-  void process(ImageRequest<ImageCtxT> *req) override;
-
-private:
-  typedef std::list<Context *> Contexts;
-
-  struct C_AcquireLock;
-  struct C_BlockedWrites;
-  struct C_RefreshFinish;
-
-  ImageCtxT &m_image_ctx;
-  mutable RWLock m_lock;
-  Contexts m_write_blocker_contexts;
-  uint32_t m_write_blockers = 0;
-  bool m_require_lock_on_read = false;
-  bool m_require_lock_on_write = false;
-  std::atomic<unsigned> m_queued_reads { 0 };
-  std::atomic<unsigned> m_queued_writes { 0 };
-  std::atomic<unsigned> m_in_flight_ios { 0 };
-  std::atomic<unsigned> m_in_flight_writes { 0 };
-  std::atomic<unsigned> m_io_blockers { 0 };
-
-  bool m_shutdown = false;
-  Context *m_on_shutdown = nullptr;
-
-  bool is_lock_required(bool write_op) const;
-
-  inline bool require_lock_on_read() const {
-    RWLock::RLocker locker(m_lock);
-    return m_require_lock_on_read;
-  }
-  inline bool writes_empty() const {
-    RWLock::RLocker locker(m_lock);
-    return (m_queued_writes == 0);
-  }
-
-  void finish_queued_io(ImageRequest<ImageCtxT> *req);
-  void finish_in_flight_write();
-
-  int start_in_flight_io(AioCompletion *c);
-  void finish_in_flight_io();
-  void fail_in_flight_io(int r, ImageRequest<ImageCtxT> *req);
-
-  void queue(ImageRequest<ImageCtxT> *req);
-
-  void handle_acquire_lock(int r, ImageRequest<ImageCtxT> *req);
-  void handle_refreshed(int r, ImageRequest<ImageCtxT> *req);
-  void handle_blocked_writes(int r);
-};
-
-} // namespace io
-} // namespace librbd
-
-extern template class librbd::io::ImageRequestWQ<librbd::ImageCtx>;
-
-#endif // CEPH_LIBRBD_IO_IMAGE_REQUEST_WQ_H