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/* glpenv02.c (thread local storage) */
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/***********************************************************************
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* This code is part of GLPK (GNU Linear Programming Kit).
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*
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* Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
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* 2009, 2010 Andrew Makhorin, Department for Applied Informatics,
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* Moscow Aviation Institute, Moscow, Russia. All rights reserved.
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* E-mail: <mao@gnu.org>.
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*
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* GLPK is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GLPK is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* 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 GLPK. If not, see <http://www.gnu.org/licenses/>.
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***********************************************************************/
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#include "glpenv.h"
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static void *tls = NULL;
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/* in a re-entrant version of the package this variable must be placed
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in the Thread Local Storage (TLS) */
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/***********************************************************************
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* NAME
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*
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* tls_set_ptr - store global pointer in TLS
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*
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* SYNOPSIS
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*
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* #include "glpenv.h"
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* void tls_set_ptr(void *ptr);
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*
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* DESCRIPTION
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*
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* The routine tls_set_ptr stores a pointer specified by the parameter
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* ptr in the Thread Local Storage (TLS). */
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void tls_set_ptr(void *ptr)
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{ tls = ptr;
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return;
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}
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/***********************************************************************
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* NAME
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*
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* tls_get_ptr - retrieve global pointer from TLS
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*
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* SYNOPSIS
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*
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* #include "glpenv.h"
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* void *tls_get_ptr(void);
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*
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* RETURNS
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*
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* The routine tls_get_ptr returns a pointer previously stored by the
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* routine tls_set_ptr. If the latter has not been called yet, NULL is
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* returned. */
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void *tls_get_ptr(void)
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{ void *ptr;
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ptr = tls;
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return ptr;
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}
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/* eof */
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