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44 lines
818 B
C
44 lines
818 B
C
// Copyright (c) 2000-2011 by Digital Mars
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// All Rights Reserved
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// written by Walter Bright
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// http://www.digitalmars.com
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// License for redistribution is by either the Artistic License
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// in artistic.txt, or the GNU General Public License in gnu.txt.
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// See the included readme.txt for details.
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#include <assert.h>
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#include <stdlib.h>
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#include "bits.h"
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GCBits::GCBits()
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{
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data = NULL;
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nwords = 0;
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nbits = 0;
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}
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GCBits::~GCBits()
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{
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if (data)
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::free(data);
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data = NULL;
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}
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void GCBits::invariant()
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{
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if (data)
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{
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assert(nwords * sizeof(*data) * 8 >= nbits);
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}
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}
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void GCBits::alloc(unsigned nbits)
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{
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this->nbits = nbits;
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nwords = (nbits + (BITS_PER_WORD - 1)) >> BITS_SHIFT;
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data = (unsigned *)::calloc(nwords + 2, sizeof(unsigned));
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assert(data);
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}
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