128ecc27f2
This is only ever called with a recursive space map wrapper, and that causes too many false positives. False positives trigger a copy of a metadata page, so this is a false economy.
99 lines
2.1 KiB
C++
99 lines
2.1 KiB
C++
// Copyright (C) 2019 Red Hat, Inc. All rights reserved.
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//
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// This file is part of the thin-provisioning-tools source.
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//
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// thin-provisioning-tools is free software: you can redistribute it
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// and/or modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// thin-provisioning-tools is distributed in the hope that it will be
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with thin-provisioning-tools. If not, see
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// <http://www.gnu.org/licenses/>.
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#ifndef NOOP_MAP_H
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#define NOOP_MAP_H
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#include "persistent-data/space_map.h"
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//----------------------------------------------------------------
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namespace persistent_data {
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class noop_map : public checked_space_map {
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public:
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typedef std::shared_ptr<noop_map> ptr;
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block_address get_nr_blocks() const {
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fail();
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return 0;
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}
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block_address get_nr_free() const {
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fail();
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return 0;
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}
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ref_t get_count(block_address b) const {
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fail();
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return 0;
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}
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void set_count(block_address b, ref_t c) {
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fail();
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}
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void commit() {
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fail();
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}
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void inc(block_address b, ref_t count) {
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fail();
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}
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void dec(block_address b, ref_t count) {
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fail();
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}
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maybe_block find_free(span_iterator &it) {
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fail();
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return boost::optional<block_address>(0);
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}
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void extend(block_address extra_blocks) {
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fail();
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}
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void count_metadata(block_counter &bc) const {
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fail();
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}
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size_t root_size() const {
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fail();
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return 0;
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}
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virtual void copy_root(void *dest, size_t len) const {
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fail();
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}
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checked_space_map::ptr clone() const {
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return ptr(new noop_map());
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}
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private:
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void fail() const {
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throw std::runtime_error("noop space map used");
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}
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};
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}
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//----------------------------------------------------------------
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#endif
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