lavf/avio: Print the https warning also for missing tls protocol.
[ffmpeg.git] / compat / os2threads.h
1 /*
2  * Copyright (c) 2011 KO Myung-Hun <komh@chollian.net>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * os2threads to pthreads wrapper
24  */
25
26 #ifndef COMPAT_OS2THREADS_H
27 #define COMPAT_OS2THREADS_H
28
29 #define INCL_DOS
30 #include <os2.h>
31
32 #undef __STRICT_ANSI__          /* for _beginthread() */
33 #include <stdlib.h>
34
35 #include <sys/builtin.h>
36 #include <sys/fmutex.h>
37
38 #include "libavutil/attributes.h"
39
40 typedef struct {
41     TID tid;
42     void *(*start_routine)(void *);
43     void *arg;
44     void *result;
45 } pthread_t;
46
47 typedef void pthread_attr_t;
48
49 typedef HMTX pthread_mutex_t;
50 typedef void pthread_mutexattr_t;
51
52 typedef struct {
53     HEV event_sem;
54     HEV ack_sem;
55     volatile unsigned  wait_count;
56 } pthread_cond_t;
57
58 typedef void pthread_condattr_t;
59
60 typedef struct {
61     volatile int done;
62     _fmutex mtx;
63 } pthread_once_t;
64
65 #define PTHREAD_ONCE_INIT {0, _FMUTEX_INITIALIZER}
66
67 static void thread_entry(void *arg)
68 {
69     pthread_t *thread = arg;
70
71     thread->result = thread->start_routine(thread->arg);
72 }
73
74 static av_always_inline int pthread_create(pthread_t *thread,
75                                            const pthread_attr_t *attr,
76                                            void *(*start_routine)(void*),
77                                            void *arg)
78 {
79     thread->start_routine = start_routine;
80     thread->arg = arg;
81     thread->result = NULL;
82
83     thread->tid = _beginthread(thread_entry, NULL, 1024 * 1024, thread);
84
85     return 0;
86 }
87
88 static av_always_inline int pthread_join(pthread_t thread, void **value_ptr)
89 {
90     DosWaitThread(&thread.tid, DCWW_WAIT);
91
92     if (value_ptr)
93         *value_ptr = thread.result;
94
95     return 0;
96 }
97
98 static av_always_inline int pthread_mutex_init(pthread_mutex_t *mutex,
99                                                const pthread_mutexattr_t *attr)
100 {
101     DosCreateMutexSem(NULL, (PHMTX)mutex, 0, FALSE);
102
103     return 0;
104 }
105
106 static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
107 {
108     DosCloseMutexSem(*(PHMTX)mutex);
109
110     return 0;
111 }
112
113 static av_always_inline int pthread_mutex_lock(pthread_mutex_t *mutex)
114 {
115     DosRequestMutexSem(*(PHMTX)mutex, SEM_INDEFINITE_WAIT);
116
117     return 0;
118 }
119
120 static av_always_inline int pthread_mutex_unlock(pthread_mutex_t *mutex)
121 {
122     DosReleaseMutexSem(*(PHMTX)mutex);
123
124     return 0;
125 }
126
127 static av_always_inline int pthread_cond_init(pthread_cond_t *cond,
128                                               const pthread_condattr_t *attr)
129 {
130     DosCreateEventSem(NULL, &cond->event_sem, DCE_POSTONE, FALSE);
131     DosCreateEventSem(NULL, &cond->ack_sem, DCE_POSTONE, FALSE);
132
133     cond->wait_count = 0;
134
135     return 0;
136 }
137
138 static av_always_inline int pthread_cond_destroy(pthread_cond_t *cond)
139 {
140     DosCloseEventSem(cond->event_sem);
141     DosCloseEventSem(cond->ack_sem);
142
143     return 0;
144 }
145
146 static av_always_inline int pthread_cond_signal(pthread_cond_t *cond)
147 {
148     if (!__atomic_cmpxchg32(&cond->wait_count, 0, 0)) {
149         DosPostEventSem(cond->event_sem);
150         DosWaitEventSem(cond->ack_sem, SEM_INDEFINITE_WAIT);
151     }
152
153     return 0;
154 }
155
156 static av_always_inline int pthread_cond_broadcast(pthread_cond_t *cond)
157 {
158     while (!__atomic_cmpxchg32(&cond->wait_count, 0, 0))
159         pthread_cond_signal(cond);
160
161     return 0;
162 }
163
164 static av_always_inline int pthread_cond_wait(pthread_cond_t *cond,
165                                               pthread_mutex_t *mutex)
166 {
167     __atomic_increment(&cond->wait_count);
168
169     pthread_mutex_unlock(mutex);
170
171     DosWaitEventSem(cond->event_sem, SEM_INDEFINITE_WAIT);
172
173     __atomic_decrement(&cond->wait_count);
174
175     DosPostEventSem(cond->ack_sem);
176
177     pthread_mutex_lock(mutex);
178
179     return 0;
180 }
181
182 static av_always_inline int pthread_once(pthread_once_t *once_control,
183                                          void (*init_routine)(void))
184 {
185     if (!once_control->done)
186     {
187         _fmutex_request(&once_control->mtx, 0);
188
189         if (!once_control->done)
190         {
191             init_routine();
192
193             once_control->done = 1;
194         }
195
196         _fmutex_release(&once_control->mtx);
197     }
198
199     return 0;
200 }
201 #endif /* COMPAT_OS2THREADS_H */