+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#ifndef CEPH_LIBRBD_IMAGE_CLOSE_REQUEST_H
-#define CEPH_LIBRBD_IMAGE_CLOSE_REQUEST_H
-
-#include "librbd/ImageCtx.h"
-
-class Context;
-
-namespace librbd {
-
-class ImageCtx;
-
-namespace image {
-
-template <typename ImageCtxT = ImageCtx>
-class CloseRequest {
-public:
- static CloseRequest *create(ImageCtxT *image_ctx, Context *on_finish) {
- return new CloseRequest(image_ctx, on_finish);
- }
-
- void send();
-
-private:
- /**
- * @verbatim
- *
- * <start>
- * |
- * v
- * BLOCK_IMAGE_WATCHER (skip if R/O)
- * |
- * v
- * SHUT_DOWN_UPDATE_WATCHERS
- * |
- * v
- * SHUT_DOWN_AIO_WORK_QUEUE . . .
- * | . (exclusive lock disabled)
- * v v
- * SHUT_DOWN_EXCLUSIVE_LOCK FLUSH
- * | .
- * | . . . . . . . . . . .
- * | .
- * v v
- * UNREGISTER_IMAGE_WATCHER (skip if R/O)
- * |
- * v
- * FLUSH_READAHEAD
- * |
- * v
- * SHUTDOWN_CACHE
- * |
- * v
- * FLUSH_OP_WORK_QUEUE . . . . .
- * | .
- * v .
- * CLOSE_PARENT . (no parent)
- * | .
- * v .
- * FLUSH_IMAGE_WATCHER < . . . .
- * |
- * v
- * <finish>
- *
- * @endverbatim
- */
-
- CloseRequest(ImageCtxT *image_ctx, Context *on_finish);
-
- ImageCtxT *m_image_ctx;
- Context *m_on_finish;
-
- int m_error_result;
-
- decltype(m_image_ctx->exclusive_lock) m_exclusive_lock;
-
- void send_block_image_watcher();
- void handle_block_image_watcher(int r);
-
- void send_shut_down_update_watchers();
- void handle_shut_down_update_watchers(int r);
-
- void send_shut_down_io_queue();
- void handle_shut_down_io_queue(int r);
-
- void send_shut_down_exclusive_lock();
- void handle_shut_down_exclusive_lock(int r);
-
- void send_flush();
- void handle_flush(int r);
-
- void send_unregister_image_watcher();
- void handle_unregister_image_watcher(int r);
-
- void send_flush_readahead();
- void handle_flush_readahead(int r);
-
- void send_shut_down_cache();
- void handle_shut_down_cache(int r);
-
- void send_flush_op_work_queue();
- void handle_flush_op_work_queue(int r);
-
- void send_close_parent();
- void handle_close_parent(int r);
-
- void send_flush_image_watcher();
- void handle_flush_image_watcher(int r);
-
- void finish();
-
- void save_result(int result) {
- if (m_error_result == 0 && result < 0) {
- m_error_result = result;
- }
- }
-};
-
-} // namespace image
-} // namespace librbd
-
-extern template class librbd::image::CloseRequest<librbd::ImageCtx>;
-
-#endif // CEPH_LIBRBD_IMAGE_CLOSE_REQUEST_H