1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/*
* Mesa 3-D graphics library
* Version: 6.5.1
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* XXX There's probably some work to do in order to make this file
* truly reusable outside of Mesa.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#include <X11/Xfuncproto.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include "glthread.h"
/*
* This file should still compile even when THREADS is not defined.
* This is to make things easier to deal with on the makefile scene..
*/
#ifdef THREADS
#include <errno.h>
/*
* Error messages
*/
#define INIT_TSD_ERROR "_glthread_: failed to allocate key for thread specific data"
#define GET_TSD_ERROR "_glthread_: failed to get thread specific data"
#define SET_TSD_ERROR "_glthread_: thread failed to set thread specific data"
/*
* Magic number to determine if a TSD object has been initialized.
* Kind of a hack but there doesn't appear to be a better cross-platform
* solution.
*/
#define INIT_MAGIC 0xff8adc98
/*
* POSIX Threads -- The best way to go if your platform supports them.
* Solaris >= 2.5 have POSIX threads, IRIX >= 6.4 reportedly
* has them, and many of the free Unixes now have them.
* Be sure to use appropriate -mt or -D_REENTRANT type
* compile flags when building.
*/
#ifdef PTHREADS
_X_EXPORT unsigned long
_glthread_GetID(void)
{
return (unsigned long) pthread_self();
}
void
_glthread_InitTSD(_glthread_TSD * tsd)
{
if (pthread_key_create(&tsd->key, NULL /*free */ ) != 0) {
perror(INIT_TSD_ERROR);
exit(-1);
}
tsd->initMagic = INIT_MAGIC;
}
void *
_glthread_GetTSD(_glthread_TSD * tsd)
{
if (tsd->initMagic != (int) INIT_MAGIC) {
_glthread_InitTSD(tsd);
}
return pthread_getspecific(tsd->key);
}
void
_glthread_SetTSD(_glthread_TSD * tsd, void *ptr)
{
if (tsd->initMagic != (int) INIT_MAGIC) {
_glthread_InitTSD(tsd);
}
if (pthread_setspecific(tsd->key, ptr) != 0) {
perror(SET_TSD_ERROR);
exit(-1);
}
}
#endif /* PTHREADS */
/*
* Win32 Threads. The only available option for Windows 95/NT.
* Be sure that you compile using the Multithreaded runtime, otherwise
* bad things will happen.
*/
#ifdef WIN32_THREADS
void
FreeTSD(_glthread_TSD * p)
{
if (p->initMagic == INIT_MAGIC) {
TlsFree(p->key);
p->initMagic = 0;
}
}
void
InsteadOf_exit(int nCode)
{
DWORD dwErr = GetLastError();
}
unsigned long
_glthread_GetID(void)
{
return GetCurrentThreadId();
}
void
_glthread_InitTSD(_glthread_TSD * tsd)
{
tsd->key = TlsAlloc();
if (tsd->key == TLS_OUT_OF_INDEXES) {
perror("Mesa:_glthread_InitTSD");
InsteadOf_exit(-1);
}
tsd->initMagic = INIT_MAGIC;
}
void *
_glthread_GetTSD(_glthread_TSD * tsd)
{
if (tsd->initMagic != INIT_MAGIC) {
_glthread_InitTSD(tsd);
}
return TlsGetValue(tsd->key);
}
void
_glthread_SetTSD(_glthread_TSD * tsd, void *ptr)
{
/* the following code assumes that the _glthread_TSD has been initialized
to zero at creation */
if (tsd->initMagic != INIT_MAGIC) {
_glthread_InitTSD(tsd);
}
if (TlsSetValue(tsd->key, ptr) == 0) {
perror("Mesa:_glthread_SetTSD");
InsteadOf_exit(-1);
}
}
#endif /* WIN32_THREADS */
#else /* THREADS */
/*
* no-op functions
*/
_X_EXPORT unsigned long
_glthread_GetID(void)
{
return 0;
}
void
_glthread_InitTSD(_glthread_TSD * tsd)
{
(void) tsd;
}
void *
_glthread_GetTSD(_glthread_TSD * tsd)
{
(void) tsd;
return NULL;
}
void
_glthread_SetTSD(_glthread_TSD * tsd, void *ptr)
{
(void) tsd;
(void) ptr;
}
#endif /* THREADS */
|
