mirror of
https://github.com/ceph/ceph
synced 2025-02-09 03:49:38 +00:00
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 -*-
|
||
|
|
// 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 __BITMAPPER_H
|
||
|
|
#define __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
|