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-rw-r--r--src/include/bitmapper.h48
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diff --git a/src/include/bitmapper.h b/src/include/bitmapper.h
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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