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