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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_OBJECT_DISPATCHER_H
#define CEPH_LIBRBD_IO_OBJECT_DISPATCHER_H
#include "include/int_types.h"
#include "common/RWLock.h"
#include "librbd/io/Types.h"
#include <map>
struct AsyncOpTracker;
struct Context;
namespace librbd {
struct ImageCtx;
namespace io {
struct ObjectDispatchInterface;
struct ObjectDispatchSpec;
struct ObjectDispatcherInterface {
public:
virtual ~ObjectDispatcherInterface() {
}
private:
friend class ObjectDispatchSpec;
virtual void send(ObjectDispatchSpec* object_dispatch_spec) = 0;
};
template <typename ImageCtxT = ImageCtx>
class ObjectDispatcher : public ObjectDispatcherInterface {
public:
ObjectDispatcher(ImageCtxT* image_ctx);
~ObjectDispatcher();
void shut_down(Context* on_finish);
void register_object_dispatch(ObjectDispatchInterface* object_dispatch);
void shut_down_object_dispatch(ObjectDispatchLayer object_dispatch_layer,
Context* on_finish);
void invalidate_cache(Context* on_finish);
void reset_existence_cache(Context* on_finish);
void extent_overwritten(
uint64_t object_no, uint64_t object_off, uint64_t object_len,
uint64_t journal_tid, uint64_t new_journal_tid);
private:
struct ObjectDispatchMeta {
ObjectDispatchInterface* object_dispatch = nullptr;
AsyncOpTracker* async_op_tracker = nullptr;
ObjectDispatchMeta() {
}
ObjectDispatchMeta(ObjectDispatchInterface* object_dispatch,
AsyncOpTracker* async_op_tracker)
: object_dispatch(object_dispatch), async_op_tracker(async_op_tracker) {
}
};
struct C_LayerIterator;
struct C_InvalidateCache;
struct C_ResetExistenceCache;
struct SendVisitor;
ImageCtxT* m_image_ctx;
RWLock m_lock;
std::map<ObjectDispatchLayer, ObjectDispatchMeta> m_object_dispatches;
void send(ObjectDispatchSpec* object_dispatch_spec);
void shut_down_object_dispatch(ObjectDispatchMeta& object_dispatch_meta,
Context** on_finish);
};
} // namespace io
} // namespace librbd
extern template class librbd::io::ObjectDispatcher<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_IO_OBJECT_DISPATCHER_H
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