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55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/** @file
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* @brief Mechanism for accessing a struct of constant information
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*/
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// Copyright (C) 2003,2004,2005,2007,2008,2009,2010,2012,2013,2015 Olly Betts
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//
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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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//
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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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//
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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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#ifndef XAPIAN_INCLUDED_XAPIAN_CONSTINFO_H
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#define XAPIAN_INCLUDED_XAPIAN_CONSTINFO_H
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#include <xapian/attributes.h>
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#include <xapian/visibility.h>
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namespace Xapian {
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namespace Internal {
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/** @private @internal */
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struct constinfo {
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unsigned char C_tab[256];
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int major, minor, revision;
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char str[8];
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unsigned stemmer_name_len;
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// FIXME: We don't want to fix the size of this in the API headers.
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char stemmer_data[256];
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};
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/** @private @internal
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*
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* Rather than having a separate function to access each piece of information,
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* we put it all into a structure and have a single function which returns a
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* pointer to this (and we mark that function with attribute const, so the
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* compiler should be able to CSE calls to it. This means that when Xapian is
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* loaded as a shared library we save N-1 relocations (where N is the
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* number of pieces of information), which reduces the library load time.
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*/
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XAPIAN_VISIBILITY_DEFAULT
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const struct constinfo * XAPIAN_NOTHROW(get_constinfo_()) XAPIAN_CONST_FUNCTION;
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}
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}
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#endif /* XAPIAN_INCLUDED_XAPIAN_CONSTINFO_H */
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