1 /*
2 * pthread_getspecific.c
3 *
4 * Description:
5 * POSIX thread functions which implement thread-specific data (TSD).
6 *
7 * --------------------------------------------------------------------------
8 *
9 * Pthreads-win32 - POSIX Threads Library for Win32
10 * Copyright(C) 1998 John E. Bossom
11 * Copyright(C) 1999,2005 Pthreads-win32 contributors
12 *
13 * Contact Email: rpj@callisto.canberra.edu.au
14 *
15 * The current list of contributors is contained
16 * in the file CONTRIBUTORS included with the source
17 * code distribution. The list can also be seen at the
18 * following World Wide Web location:
19 * http://sources.redhat.com/pthreads-win32/contributors.html
20 *
21 * This library is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU Lesser General Public
23 * License as published by the Free Software Foundation; either
24 * version 2 of the License, or (at your option) any later version.
25 *
26 * This library is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
29 * Lesser General Public License for more details.
30 *
31 * You should have received a copy of the GNU Lesser General Public
32 * License along with this library in the file COPYING.LIB;
33 * if not, write to the Free Software Foundation, Inc.,
34 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
35 */
36
37 #include "pthread.h"
38 #include "implement.h"
39
40
41 void *
pthread_getspecific(pthread_key_t key)42 pthread_getspecific (pthread_key_t key)
43 /*
44 * ------------------------------------------------------
45 * DOCPUBLIC
46 * This function returns the current value of key in the
47 * calling thread. If no value has been set for 'key' in
48 * the thread, NULL is returned.
49 *
50 * PARAMETERS
51 * key
52 * an instance of pthread_key_t
53 *
54 *
55 * DESCRIPTION
56 * This function returns the current value of key in the
57 * calling thread. If no value has been set for 'key' in
58 * the thread, NULL is returned.
59 *
60 * RESULTS
61 * key value or NULL on failure
62 *
63 * ------------------------------------------------------
64 */
65 {
66 void * ptr;
67
68 if (key == NULL)
69 {
70 ptr = NULL;
71 }
72 else
73 {
74 int lasterror = GetLastError ();
75 #if defined(RETAIN_WSALASTERROR)
76 int lastWSAerror = WSAGetLastError ();
77 #endif
78 ptr = TlsGetValue (key->key);
79
80 SetLastError (lasterror);
81 #if defined(RETAIN_WSALASTERROR)
82 WSASetLastError (lastWSAerror);
83 #endif
84 }
85
86 return ptr;
87 }
88