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  • Committer: Stewart Smith
  • Date: 2010-02-15 03:55:09 UTC
  • mto: (1273.13.96 build)
  • mto: This revision was merged to the branch mainline in revision 1308.
  • Revision ID: stewart@flamingspork.com-20100215035509-y6sry4q4yymph2by
move SUBSTR, SUBSTRING and SUBSTR_INDEX to plugins. add parser hooks for substr being a plugin now.

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drizzled/query_id.h
 
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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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 *
 
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 *  Copyright (C) 2008 Sun Microsystems
 
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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; version 2 of the License.
 
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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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 */
 
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#ifndef DRIZZLED_QUERY_ID_H
 
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#define DRIZZLED_QUERY_ID_H
 
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#include <pthread.h>
 
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#include <drizzled/atomics.h>
 
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namespace drizzled
 
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{
 
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typedef uint64_t query_id_t;
 
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class Query_id
 
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{
 
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public:
 
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  static Query_id& get_query_id() {
 
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    static Query_id the_id;
 
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    return the_id;
 
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  }
 
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  ~Query_id();
 
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  /* return current query_id value */
 
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  query_id_t value() const;
 
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  /* increment query_id and return it.  */
 
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  query_id_t next();
 
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private:
 
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  atomic<uint64_t> the_query_id;
 
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  Query_id();
 
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  Query_id(Query_id const&);
 
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  Query_id& operator=(Query_id const&);
 
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};
 
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} /* namespace drizzled */
 
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#endif /* DRIZZLED_QUERY_ID_H */