1/* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements.  See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License.  You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "apr_arch_threadproc.h"
18#include "apr_portable.h"
19
20APR_DECLARE(apr_status_t) apr_threadattr_create(apr_threadattr_t **new, apr_pool_t *pool)
21{
22    (*new) = (apr_threadattr_t *)apr_palloc(pool,
23              sizeof(apr_threadattr_t));
24
25    if ((*new) == NULL) {
26        return APR_ENOMEM;
27    }
28
29    (*new)->pool = pool;
30	(*new)->attr = (int32)B_NORMAL_PRIORITY;
31
32    return APR_SUCCESS;
33}
34
35APR_DECLARE(apr_status_t) apr_threadattr_detach_set(apr_threadattr_t *attr, apr_int32_t on)
36{
37	if (on == 1){
38		attr->detached = 1;
39	} else {
40		attr->detached = 0;
41	}
42    return APR_SUCCESS;
43}
44
45APR_DECLARE(apr_status_t) apr_threadattr_detach_get(apr_threadattr_t *attr)
46{
47	if (attr->detached == 1){
48		return APR_DETACH;
49	}
50	return APR_NOTDETACH;
51}
52
53APR_DECLARE(apr_status_t) apr_threadattr_stacksize_set(apr_threadattr_t *attr,
54                                                       apr_size_t stacksize)
55{
56    return APR_ENOTIMPL;
57}
58
59APR_DECLARE(apr_status_t) apr_threadattr_guardsize_set(apr_threadattr_t *attr,
60                                                       apr_size_t size)
61{
62    return APR_ENOTIMPL;
63}
64
65static void *dummy_worker(void *opaque)
66{
67    apr_thread_t *thd = (apr_thread_t*)opaque;
68    return thd->func(thd, thd->data);
69}
70
71APR_DECLARE(apr_status_t) apr_thread_create(apr_thread_t **new, apr_threadattr_t *attr,
72                                            apr_thread_start_t func, void *data,
73                                            apr_pool_t *pool)
74{
75    int32 temp;
76    apr_status_t stat;
77
78    (*new) = (apr_thread_t *)apr_palloc(pool, sizeof(apr_thread_t));
79    if ((*new) == NULL) {
80        return APR_ENOMEM;
81    }
82
83    (*new)->data = data;
84    (*new)->func = func;
85    (*new)->exitval = -1;
86
87    /* First we create the new thread...*/
88	if (attr)
89	    temp = attr->attr;
90	else
91	    temp = B_NORMAL_PRIORITY;
92
93    stat = apr_pool_create(&(*new)->pool, pool);
94    if (stat != APR_SUCCESS) {
95        return stat;
96    }
97
98    (*new)->td = spawn_thread((thread_func)dummy_worker,
99                              "apr thread",
100                              temp,
101                              (*new));
102
103    /* Now we try to run it...*/
104    if (resume_thread((*new)->td) == B_NO_ERROR) {
105        return APR_SUCCESS;
106    }
107    else {
108        return errno;
109    }
110}
111
112APR_DECLARE(apr_os_thread_t) apr_os_thread_current(void)
113{
114    return find_thread(NULL);
115}
116
117int apr_os_thread_equal(apr_os_thread_t tid1, apr_os_thread_t tid2)
118{
119    return tid1 == tid2;
120}
121
122APR_DECLARE(apr_status_t) apr_thread_exit(apr_thread_t *thd, apr_status_t retval)
123{
124    apr_pool_destroy(thd->pool);
125    thd->exitval = retval;
126    exit_thread ((status_t)(retval));
127    /* This will never be reached... */
128    return APR_SUCCESS;
129}
130
131APR_DECLARE(apr_status_t) apr_thread_join(apr_status_t *retval, apr_thread_t *thd)
132{
133    status_t rv = 0, ret;
134    ret = wait_for_thread(thd->td, &rv);
135    if (ret == B_NO_ERROR) {
136        *retval = rv;
137        return APR_SUCCESS;
138    }
139    else {
140        /* if we've missed the thread's death, did we set an exit value prior
141         * to it's demise?  If we did return that.
142         */
143        if (thd->exitval != -1) {
144            *retval = thd->exitval;
145            return APR_SUCCESS;
146        } else
147            return ret;
148    }
149}
150
151APR_DECLARE(apr_status_t) apr_thread_detach(apr_thread_t *thd)
152{
153	if (suspend_thread(thd->td) == B_NO_ERROR){
154        return APR_SUCCESS;
155    }
156    else {
157        return errno;
158    }
159}
160
161void apr_thread_yield()
162{
163}
164
165APR_DECLARE(apr_status_t) apr_thread_data_get(void **data, const char *key, apr_thread_t *thread)
166{
167    return apr_pool_userdata_get(data, key, thread->pool);
168}
169
170APR_DECLARE(apr_status_t) apr_thread_data_set(void *data, const char *key,
171                                              apr_status_t (*cleanup) (void *),
172                                              apr_thread_t *thread)
173{
174    return apr_pool_userdata_set(data, key, cleanup, thread->pool);
175}
176
177APR_DECLARE(apr_status_t) apr_os_thread_get(apr_os_thread_t **thethd, apr_thread_t *thd)
178{
179    *thethd = &thd->td;
180    return APR_SUCCESS;
181}
182
183APR_DECLARE(apr_status_t) apr_os_thread_put(apr_thread_t **thd, apr_os_thread_t *thethd,
184                                            apr_pool_t *pool)
185{
186    if (pool == NULL) {
187        return APR_ENOPOOL;
188    }
189    if ((*thd) == NULL) {
190        (*thd) = (apr_thread_t *)apr_pcalloc(pool, sizeof(apr_thread_t));
191        (*thd)->pool = pool;
192    }
193    (*thd)->td = *thethd;
194    return APR_SUCCESS;
195}
196
197static apr_status_t thread_once_cleanup(void *vcontrol)
198{
199    apr_thread_once_t *control = (apr_thread_once_t *)vcontrol;
200
201    if (control->sem) {
202        release_sem(control->sem);
203        delete_sem(control->sem);
204    }
205
206    return APR_SUCCESS;
207}
208
209APR_DECLARE(apr_status_t) apr_thread_once_init(apr_thread_once_t **control,
210                                               apr_pool_t *p)
211{
212    int rc;
213    *control = (apr_thread_once_t *)apr_pcalloc(p, sizeof(apr_thread_once_t));
214    (*control)->hit = 0; /* we haven't done it yet... */
215    rc = ((*control)->sem = create_sem(1, "thread_once"));
216    if (rc < 0)
217        return rc;
218
219    apr_pool_cleanup_register(p, control, thread_once_cleanup, apr_pool_cleanup_null);
220    return APR_SUCCESS;
221}
222
223
224
225APR_DECLARE(apr_status_t) apr_thread_once(apr_thread_once_t *control,
226                                          void (*func)(void))
227{
228    if (!control->hit) {
229        if (acquire_sem(control->sem) == B_OK) {
230            control->hit = 1;
231            func();
232        }
233    }
234    return APR_SUCCESS;
235}
236
237APR_POOL_IMPLEMENT_ACCESSOR(thread)
238