mirror of
https://github.com/ceph/ceph
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dc48f25847
git-svn-id: https://ceph.svn.sf.net/svnroot/ceph@2100 29311d96-e01e-0410-9327-a35deaab8ce9
49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
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// vim: ts=8 sw=2 smarttab
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/*
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* Ceph - scalable distributed file system
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*
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* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
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*
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* This is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software
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* Foundation. See file COPYING.
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*
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*/
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#ifndef __BITMAPPER_H
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#define __BITMAPPER_H
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class bitmapper {
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char *_data;
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int _len;
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public:
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bitmapper() : _data(0), _len(0) { }
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bitmapper(char *data, int len) : _data(data), _len(len) { }
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void set_data(char *data, int len) { _data = data; _len = len; }
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int bytes() const { return _len; }
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int bits() const { return _len * 8; }
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bool operator[](int b) const {
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return get(b);
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}
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bool get(int b) const {
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return _data[b >> 3] & (1 << (b&7));
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}
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void set(int b) {
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_data[b >> 3] |= 1 << (b&7);
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}
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void clear(int b) {
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_data[b >> 3] &= ~(1 << (b&7));
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}
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void toggle(int b) {
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_data[b >> 3] ^= 1 << (b&7);
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}
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};
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#endif
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