lemon-project-template-glpk
view deps/glpk/src/glpenv02.c @ 9:33de93886c88
Import GLPK 4.47
| author | Alpar Juttner <alpar@cs.elte.hu> |
|---|---|
| date | Sun, 06 Nov 2011 20:59:10 +0100 |
| parents | |
| children |
line source
1 /* glpenv02.c (thread local storage) */
3 /***********************************************************************
4 * This code is part of GLPK (GNU Linear Programming Kit).
5 *
6 * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
7 * 2009, 2010, 2011 Andrew Makhorin, Department for Applied Informatics,
8 * Moscow Aviation Institute, Moscow, Russia. All rights reserved.
9 * E-mail: <mao@gnu.org>.
10 *
11 * GLPK is free software: you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * GLPK is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
19 * License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with GLPK. If not, see <http://www.gnu.org/licenses/>.
23 ***********************************************************************/
25 #include "glpenv.h"
27 static void *tls = NULL;
28 /* in a re-entrant version of the package this variable must be placed
29 in the Thread Local Storage (TLS) */
31 /***********************************************************************
32 * NAME
33 *
34 * tls_set_ptr - store global pointer in TLS
35 *
36 * SYNOPSIS
37 *
38 * #include "glpenv.h"
39 * void tls_set_ptr(void *ptr);
40 *
41 * DESCRIPTION
42 *
43 * The routine tls_set_ptr stores a pointer specified by the parameter
44 * ptr in the Thread Local Storage (TLS). */
46 void tls_set_ptr(void *ptr)
47 { tls = ptr;
48 return;
49 }
51 /***********************************************************************
52 * NAME
53 *
54 * tls_get_ptr - retrieve global pointer from TLS
55 *
56 * SYNOPSIS
57 *
58 * #include "glpenv.h"
59 * void *tls_get_ptr(void);
60 *
61 * RETURNS
62 *
63 * The routine tls_get_ptr returns a pointer previously stored by the
64 * routine tls_set_ptr. If the latter has not been called yet, NULL is
65 * returned. */
67 void *tls_get_ptr(void)
68 { void *ptr;
69 ptr = tls;
70 return ptr;
71 }
73 /* eof */