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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#pragma once
#include <iostream>
#include <boost/intrusive_ptr.hpp>
#include <boost/smart_ptr/intrusive_ref_counter.hpp>
#include <seastar/core/future.hh>
#include "include/ceph_assert.h"
#include "crimson/osd/exceptions.h"
#include "crimson/os/seastore/extentmap_manager.h"
#include "crimson/os/seastore/extentmap_manager/btree/extentmap_btree_node.h"
#include "crimson/os/seastore/seastore_types.h"
#include "crimson/os/seastore/transaction_manager.h"
namespace crimson::os::seastore::extentmap_manager {
/**
* BtreeExtentMapManager
*
* Uses a btree to track :
* objaddr_t -> laddr_t mapping for each onode extentmap
*/
class BtreeExtentMapManager : public ExtentMapManager {
TransactionManager &tm;
ext_context_t get_ext_context(Transaction &t) {
return ext_context_t{tm,t};
}
/* get_extmap_root
*
* load extent map tree root node
*/
using get_root_ertr = TransactionManager::read_extent_ertr;
using get_root_ret = get_root_ertr::future<ExtMapNodeRef>;
get_root_ret get_extmap_root(const extmap_root_t &extmap_root, Transaction &t);
using insert_lextent_ertr = TransactionManager::read_extent_ertr;
using insert_lextent_ret = insert_lextent_ertr::future<extent_mapping_t >;
insert_lextent_ret insert_lextent(extmap_root_t &extmap_root, Transaction &t,
ExtMapNodeRef extent, objaddr_t lo,
lext_map_val_t val);
public:
explicit BtreeExtentMapManager(TransactionManager &tm);
initialize_extmap_ret initialize_extmap(Transaction &t) final;
find_lextent_ret find_lextent(const extmap_root_t &extmap_root, Transaction &t, objaddr_t lo, extent_len_t len) final;
add_lextent_ret add_lextent(extmap_root_t &extmap_root, Transaction &t, objaddr_t lo, lext_map_val_t val) final;
rm_lextent_ret rm_lextent(extmap_root_t &extmap_root, Transaction &t, objaddr_t lo, lext_map_val_t val) final;
};
using BtreeExtentMapManagerRef = std::unique_ptr<BtreeExtentMapManager>;
}
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