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  • Committer: Stewart Smith
  • Date: 2008-07-13 06:56:15 UTC
  • mto: (210.1.1 drizzle)
  • mto: This revision was merged to the branch mainline in revision 211.
  • Revision ID: stewart@flamingspork.com-20080713065615-vzok75kgnnviokl9
Move MD5() into a UDF

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drizzled/check_stack_overrun.cc
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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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#include "config.h"
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#include "drizzled/internal/my_sys.h"
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#include <drizzled/definitions.h>
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#include <drizzled/session.h>
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#include <drizzled/error.h>
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#include <drizzled/check_stack_overrun.h>
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namespace drizzled
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{
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/****************************************************************************
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        Check stack size; Send error if there isn't enough stack to continue
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****************************************************************************/
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#if defined(STACK_DIRECTION) && (STACK_DIRECTION < 0)
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#define used_stack(A,B) (long) (A - B)
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#else
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#define used_stack(A,B) (long) (B - A)
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#endif
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extern size_t my_thread_stack_size;
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bool check_stack_overrun(Session *session, long margin, void *)
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{
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  long stack_used;
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  assert(session == current_session);
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  if ((stack_used=used_stack(session->thread_stack,(char*) &stack_used)) >=
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      (long) (my_thread_stack_size - margin))
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  {
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    my_printf_error(ER_STACK_OVERRUN_NEED_MORE, ER(ER_STACK_OVERRUN_NEED_MORE),
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                    MYF(ME_FATALERROR),
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                    stack_used,my_thread_stack_size,margin);
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    return true;
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  }
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  return false;
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}
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} /* namespace drizzled */