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-rw-r--r--src/librbd/io/ImageDispatcher.h77
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diff --git a/src/librbd/io/ImageDispatcher.h b/src/librbd/io/ImageDispatcher.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_IO_IMAGE_DISPATCHER_H
+#define CEPH_LIBRBD_IO_IMAGE_DISPATCHER_H
+
+#include "include/int_types.h"
+#include "common/ceph_mutex.h"
+#include "librbd/io/Dispatcher.h"
+#include "librbd/io/ImageDispatchInterface.h"
+#include "librbd/io/ImageDispatchSpec.h"
+#include "librbd/io/ImageDispatcherInterface.h"
+#include "librbd/io/Types.h"
+#include <atomic>
+#include <map>
+
+struct Context;
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace io {
+
+template <typename> struct QosImageDispatch;
+template <typename> struct WriteBlockImageDispatch;
+
+template <typename ImageCtxT = ImageCtx>
+class ImageDispatcher : public Dispatcher<ImageCtxT, ImageDispatcherInterface> {
+public:
+ ImageDispatcher(ImageCtxT* image_ctx);
+
+ void invalidate_cache(Context* on_finish) override;
+
+ void shut_down(Context* on_finish) override;
+
+ void apply_qos_schedule_tick_min(uint64_t tick) override;
+ void apply_qos_limit(uint64_t flag, uint64_t limit, uint64_t burst,
+ uint64_t burst_seconds) override;
+ void apply_qos_exclude_ops(uint64_t exclude_ops) override;
+
+ bool writes_blocked() const override;
+ int block_writes() override;
+ void block_writes(Context *on_blocked) override;
+
+ void unblock_writes() override;
+ void wait_on_writes_unblocked(Context *on_unblocked) override;
+
+ void remap_to_physical(Extents& image_extents, ImageArea area) override;
+ ImageArea remap_to_logical(Extents& image_extents) override;
+
+protected:
+ bool send_dispatch(
+ ImageDispatchInterface* image_dispatch,
+ ImageDispatchSpec* image_dispatch_spec) override;
+
+private:
+ struct SendVisitor;
+ struct PreprocessVisitor;
+
+ using typename Dispatcher<ImageCtxT, ImageDispatcherInterface>::C_InvalidateCache;
+
+ std::atomic<uint64_t> m_next_tid{0};
+
+ QosImageDispatch<ImageCtxT>* m_qos_image_dispatch = nullptr;
+ WriteBlockImageDispatch<ImageCtxT>* m_write_block_dispatch = nullptr;
+
+ bool preprocess(ImageDispatchSpec* image_dispatch_spec);
+
+};
+
+} // namespace io
+} // namespace librbd
+
+extern template class librbd::io::ImageDispatcher<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_IO_IMAGE_DISPATCHER_H