blob: 2298b383e79e69c48701bda2fdae7de5ec8e3eb0 (
plain)
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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
/* Thread package.
This is intended to be usable independently from Python.
The implementation for system foobar is in a file thread_foobar.h
which is included by this file dependent on config settings.
Stuff shared by all thread_*.h files is collected here. */
#include "Python.h"
#ifndef DONT_HAVE_STDIO_H
#include <stdio.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#else
#ifdef Py_DEBUG
extern char *getenv(const char *);
#endif
#endif
#ifdef __DGUX
#define _USING_POSIX4A_DRAFT6
#endif
#ifdef __sgi
#ifndef HAVE_PTHREAD_H /* XXX Need to check in configure.in */
#undef _POSIX_THREADS
#endif
#endif
#include "pythread.h"
#ifndef _POSIX_THREADS
#ifdef __sgi
#define SGI_THREADS
#endif
#ifdef HAVE_THREAD_H
#define SOLARIS_THREADS
#endif
#if defined(sun) && !defined(SOLARIS_THREADS)
#define SUN_LWP
#endif
#if defined(__MWERKS__) && !defined(__BEOS__)
#define _POSIX_THREADS
#endif
#endif /* _POSIX_THREADS */
#ifdef Py_DEBUG
static int thread_debug = 0;
#define dprintf(args) (void)((thread_debug & 1) && printf args)
#define d2printf(args) ((thread_debug & 8) && printf args)
#else
#define dprintf(args)
#define d2printf(args)
#endif
static int initialized;
static void PyThread__init_thread(void); /* Forward */
void PyThread_init_thread(void)
{
#ifdef Py_DEBUG
char *p = getenv("THREADDEBUG");
if (p) {
if (*p)
thread_debug = atoi(p);
else
thread_debug = 1;
}
#endif /* Py_DEBUG */
if (initialized)
return;
initialized = 1;
dprintf(("PyThread_init_thread called\n"));
PyThread__init_thread();
}
#ifdef SGI_THREADS
#include "thread_sgi.h"
#endif
#ifdef SOLARIS_THREADS
#include "thread_solaris.h"
#endif
#ifdef SUN_LWP
#include "thread_lwp.h"
#endif
#ifdef HAVE_PTH
#include "thread_pth.h"
#undef _POSIX_THREADS
#endif
#ifdef _POSIX_THREADS
#include "thread_pthread.h"
#endif
#ifdef C_THREADS
#include "thread_cthread.h"
#endif
#ifdef NT_THREADS
#include "thread_nt.h"
#endif
#ifdef OS2_THREADS
#include "thread_os2.h"
#endif
#ifdef BEOS_THREADS
#include "thread_beos.h"
#endif
#ifdef WINCE_THREADS
#include "thread_wince.h"
#endif
#ifdef PLAN9_THREADS
#include "thread_plan9.h"
#endif
#ifdef ATHEOS_THREADS
#include "thread_atheos.h"
#endif
/*
#ifdef FOOBAR_THREADS
#include "thread_foobar.h"
#endif
*/
#ifndef Py_HAVE_NATIVE_TLS
/* If the platform has not supplied a platform specific
TLS implementation, provide our own.
This code stolen from "thread_sgi.h", where it was the only
implementation of an existing Python TLS API.
*/
/*
* Per-thread data ("key") support.
*/
struct key {
struct key *next;
long id;
int key;
void *value;
};
static struct key *keyhead = NULL;
static int nkeys = 0;
static PyThread_type_lock keymutex = NULL;
static struct key *find_key(int key, void *value)
{
struct key *p;
long id = PyThread_get_thread_ident();
for (p = keyhead; p != NULL; p = p->next) {
if (p->id == id && p->key == key)
return p;
}
if (value == NULL)
return NULL;
p = (struct key *)malloc(sizeof(struct key));
if (p != NULL) {
p->id = id;
p->key = key;
p->value = value;
PyThread_acquire_lock(keymutex, 1);
p->next = keyhead;
keyhead = p;
PyThread_release_lock(keymutex);
}
return p;
}
int PyThread_create_key(void)
{
if (keymutex == NULL)
keymutex = PyThread_allocate_lock();
return ++nkeys;
}
void PyThread_delete_key(int key)
{
struct key *p, **q;
PyThread_acquire_lock(keymutex, 1);
q = &keyhead;
while ((p = *q) != NULL) {
if (p->key == key) {
*q = p->next;
free((void *)p);
/* NB This does *not* free p->value! */
}
else
q = &p->next;
}
PyThread_release_lock(keymutex);
}
int PyThread_set_key_value(int key, void *value)
{
struct key *p = find_key(key, value);
if (p == NULL)
return -1;
else
return 0;
}
void *PyThread_get_key_value(int key)
{
struct key *p = find_key(key, NULL);
if (p == NULL)
return NULL;
else
return p->value;
}
void PyThread_delete_key_value(int key)
{
long id = PyThread_get_thread_ident();
struct key *p, **q;
PyThread_acquire_lock(keymutex, 1);
q = &keyhead;
while ((p = *q) != NULL) {
if (p->key == key && p->id == id) {
*q = p->next;
free((void *)p);
/* NB This does *not* free p->value! */
break;
}
else
q = &p->next;
}
PyThread_release_lock(keymutex);
}
#endif /* Py_HAVE_NATIVE_TLS */
|
