summaryrefslogtreecommitdiffstats
path: root/threadproc/unix/thread.c
blob: 6d060be55e7e0e372eb653be6316c7c08639604f (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
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "apr.h"
#include "apr_portable.h"
#include "apr_arch_threadproc.h"

#if APR_HAS_THREADS

#if APR_HAVE_PTHREAD_H

/* Destroy the threadattr object */
static apr_status_t threadattr_cleanup(void *data)
{
    apr_threadattr_t *attr = data;
    apr_status_t rv;

    rv = pthread_attr_destroy(&attr->attr);
#ifdef HAVE_ZOS_PTHREADS
    if (rv) {
        rv = errno;
    }
#endif
    return rv;
}

APR_DECLARE(apr_status_t) apr_threadattr_create(apr_threadattr_t **new,
                                                apr_pool_t *pool)
{
    apr_status_t stat;

    (*new) = apr_palloc(pool, sizeof(apr_threadattr_t));
    (*new)->pool = pool;
    stat = pthread_attr_init(&(*new)->attr);

    if (stat == 0) {
        apr_pool_cleanup_register(pool, *new, threadattr_cleanup,
                                  apr_pool_cleanup_null);
        return APR_SUCCESS;
    }
#ifdef HAVE_ZOS_PTHREADS
    stat = errno;
#endif

    return stat;
}

#if defined(PTHREAD_CREATE_DETACHED)
#define DETACH_ARG(v) ((v) ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE)
#else
#define DETACH_ARG(v) ((v) ? 1 : 0)
#endif

APR_DECLARE(apr_status_t) apr_threadattr_detach_set(apr_threadattr_t *attr,
                                                    apr_int32_t on)
{
    apr_status_t stat;
#ifdef HAVE_ZOS_PTHREADS
    int arg = DETACH_ARG(on);

    if ((stat = pthread_attr_setdetachstate(&attr->attr, &arg)) == 0) {
#else
    if ((stat = pthread_attr_setdetachstate(&attr->attr, 
                                            DETACH_ARG(on))) == 0) {
#endif
        return APR_SUCCESS;
    }
    else {
#ifdef HAVE_ZOS_PTHREADS
        stat = errno;
#endif

        return stat;
    }
}

APR_DECLARE(apr_status_t) apr_threadattr_detach_get(apr_threadattr_t *attr)
{
    int state;

#ifdef PTHREAD_ATTR_GETDETACHSTATE_TAKES_ONE_ARG
    state = pthread_attr_getdetachstate(&attr->attr);
#else
    pthread_attr_getdetachstate(&attr->attr, &state);
#endif
    if (state == DETACH_ARG(1))
        return APR_DETACH;
    return APR_NOTDETACH;
}

APR_DECLARE(apr_status_t) apr_threadattr_stacksize_set(apr_threadattr_t *attr,
                                                       apr_size_t stacksize)
{
    int stat;

    stat = pthread_attr_setstacksize(&attr->attr, stacksize);
    if (stat == 0) {
        return APR_SUCCESS;
    }
#ifdef HAVE_ZOS_PTHREADS
    stat = errno;
#endif

    return stat;
}

APR_DECLARE(apr_status_t) apr_threadattr_guardsize_set(apr_threadattr_t *attr,
                                                       apr_size_t size)
{
#ifdef HAVE_PTHREAD_ATTR_SETGUARDSIZE
    apr_status_t rv;

    rv = pthread_attr_setguardsize(&attr->attr, size);
    if (rv == 0) {
        return APR_SUCCESS;
    }
#ifdef HAVE_ZOS_PTHREADS
    rv = errno;
#endif
    return rv;
#else
    return APR_ENOTIMPL;
#endif
}

static void *dummy_worker(void *opaque)
{
    apr_thread_t *thread = (apr_thread_t*)opaque;
    return thread->func(thread, thread->data);
}

APR_DECLARE(apr_status_t) apr_thread_create(apr_thread_t **new,
                                            apr_threadattr_t *attr,
                                            apr_thread_start_t func,
                                            void *data,
                                            apr_pool_t *pool)
{
    apr_status_t stat;
    pthread_attr_t *temp;

    (*new) = (apr_thread_t *)apr_pcalloc(pool, sizeof(apr_thread_t));

    if ((*new) == NULL) {
        return APR_ENOMEM;
    }

    (*new)->td = (pthread_t *)apr_pcalloc(pool, sizeof(pthread_t));

    if ((*new)->td == NULL) {
        return APR_ENOMEM;
    }

    (*new)->data = data;
    (*new)->func = func;

    if (attr)
        temp = &attr->attr;
    else
        temp = NULL;

    stat = apr_pool_create(&(*new)->pool, pool);
    if (stat != APR_SUCCESS) {
        return stat;
    }

    if ((stat = pthread_create((*new)->td, temp, dummy_worker, (*new))) == 0) {
        return APR_SUCCESS;
    }
    else {
#ifdef HAVE_ZOS_PTHREADS
        stat = errno;
#endif

        return stat;
    }
}

APR_DECLARE(apr_os_thread_t) apr_os_thread_current(void)
{
    return pthread_self();
}

APR_DECLARE(int) apr_os_thread_equal(apr_os_thread_t tid1,
                                     apr_os_thread_t tid2)
{
    return pthread_equal(tid1, tid2);
}

APR_DECLARE(apr_status_t) apr_thread_exit(apr_thread_t *thd,
                                          apr_status_t retval)
{
    thd->exitval = retval;
    apr_pool_destroy(thd->pool);
    pthread_exit(NULL);
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_join(apr_status_t *retval,
                                          apr_thread_t *thd)
{
    apr_status_t stat;
    apr_status_t *thread_stat;

    if ((stat = pthread_join(*thd->td,(void *)&thread_stat)) == 0) {
        *retval = thd->exitval;
        return APR_SUCCESS;
    }
    else {
#ifdef HAVE_ZOS_PTHREADS
        stat = errno;
#endif

        return stat;
    }
}

APR_DECLARE(apr_status_t) apr_thread_detach(apr_thread_t *thd)
{
    apr_status_t stat;

#ifdef HAVE_ZOS_PTHREADS
    if ((stat = pthread_detach(thd->td)) == 0) {
#else
    if ((stat = pthread_detach(*thd->td)) == 0) {
#endif

        return APR_SUCCESS;
    }
    else {
#ifdef HAVE_ZOS_PTHREADS
        stat = errno;
#endif

        return stat;
    }
}

APR_DECLARE(void) apr_thread_yield(void)
{
#ifdef HAVE_PTHREAD_YIELD
#ifdef HAVE_ZOS_PTHREADS
    pthread_yield(NULL);
#else
    pthread_yield();
#endif /* HAVE_ZOS_PTHREADS */
#else
#ifdef HAVE_SCHED_YIELD
    sched_yield();
#endif
#endif
}

APR_DECLARE(apr_status_t) apr_thread_data_get(void **data, const char *key,
                                              apr_thread_t *thread)
{
    return apr_pool_userdata_get(data, key, thread->pool);
}

APR_DECLARE(apr_status_t) apr_thread_data_set(void *data, const char *key,
                              apr_status_t (*cleanup)(void *),
                              apr_thread_t *thread)
{
    return apr_pool_userdata_set(data, key, cleanup, thread->pool);
}

APR_DECLARE(apr_status_t) apr_os_thread_get(apr_os_thread_t **thethd,
                                            apr_thread_t *thd)
{
    *thethd = thd->td;
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_os_thread_put(apr_thread_t **thd,
                                            apr_os_thread_t *thethd,
                                            apr_pool_t *pool)
{
    if (pool == NULL) {
        return APR_ENOPOOL;
    }

    if ((*thd) == NULL) {
        (*thd) = (apr_thread_t *)apr_pcalloc(pool, sizeof(apr_thread_t));
        (*thd)->pool = pool;
    }

    (*thd)->td = thethd;
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_once_init(apr_thread_once_t **control,
                                               apr_pool_t *p)
{
    static const pthread_once_t once_init = PTHREAD_ONCE_INIT;

    *control = apr_palloc(p, sizeof(**control));
    (*control)->once = once_init;
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_once(apr_thread_once_t *control,
                                          void (*func)(void))
{
    return pthread_once(&control->once, func);
}

APR_POOL_IMPLEMENT_ACCESSOR(thread)

#endif  /* HAVE_PTHREAD_H */
#endif  /* APR_HAS_THREADS */

#if !APR_HAS_THREADS

/* avoid warning for no prototype */
APR_DECLARE(apr_status_t) apr_os_thread_get(void);

APR_DECLARE(apr_status_t) apr_os_thread_get(void)
{
    return APR_ENOTIMPL;
}

#endif