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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2009 Sun Microsystems
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* Padraig O'Sullivan <osullivan.padraig@gmail.com>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* Implementation of helper methods for working with
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* bitsets and methods for thread-safe bitsets.
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#include <drizzled/sql_bitmap.h>
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uint32_t setNextBit(bitset<MAX_FIELDS> &bitmap)
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if ((bit_found= getFirstBitPos(bitmap)) != BIT_NONE)
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bitmap.set(bit_found);
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uint32_t getFirstBitPos(const bitset<MAX_FIELDS> &bitmap)
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uint32_t first_bit= BIT_NONE;
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for (int idx= 0; idx < MAX_FIELDS; idx++)
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if (!bitmap.test(idx))
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bool isBitmapOverlapping(const bitset<MAX_FIELDS> &map1, const bitset<MAX_FIELDS> &map2)
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bitset<MAX_FIELDS> tmp= map1 & map2;