67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
// Copyright (C) 2015 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 CHUNK_STREAM_H
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#define CHUNK_STREAM_H
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#include "block-cache/block_cache.h"
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#include <deque>
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#include <stdint.h>
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//----------------------------------------------------------------
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namespace thin_provisioning {
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struct mem {
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mem()
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: begin(0),
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end(0) {
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}
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mem(uint8_t *b, uint8_t *e)
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: begin(b),
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end(e) {
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}
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uint8_t *begin, *end;
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};
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struct chunk {
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uint64_t offset_, len_;
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mem mem_;
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};
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class chunk_stream {
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public:
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virtual ~chunk_stream() {}
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virtual void rewind() = 0;
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virtual bcache::block_address size() const = 0;
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virtual bool next(bcache::block_address count = 1ull) = 0;
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virtual bool eof() const = 0;
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virtual chunk const &get() = 0;
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virtual void put(chunk const &c) = 0;
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};
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}
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//----------------------------------------------------------------
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#endif
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