1 /*
2     Copyright (c) 2005-2021 Intel Corporation
3 
4     Licensed under the Apache License, Version 2.0 (the "License");
5     you may not use this file except in compliance with the License.
6     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 /*
18     The original source for this example is
19     Copyright (c) 1994-2008 John E. Stone
20     All rights reserved.
21 
22     Redistribution and use in source and binary forms, with or without
23     modification, are permitted provided that the following conditions
24     are met:
25     1. Redistributions of source code must retain the above copyright
26        notice, this list of conditions and the following disclaimer.
27     2. Redistributions in binary form must reproduce the above copyright
28        notice, this list of conditions and the following disclaimer in the
29        documentation and/or other materials provided with the distribution.
30     3. The name of the author may not be used to endorse or promote products
31        derived from this software without specific prior written permission.
32 
33     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
34     OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
35     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
36     ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
37     DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38     DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
39     OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
41     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
42     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43     SUCH DAMAGE.
44 */
45 
46 #ifdef EMULATE_PTHREADS
47 
48 #ifndef _PTHREAD_H_DEFINED
49 #define _PTHREAD_H_DEFINED
50 
51 #include <windows.h>
52 #include <errno.h>
53 #ifndef ENOTSUP
54 #define ENOTSUP EPERM
55 #endif
56 
57 /*  just need <stddef.h> on Windows to get std::size_t defined  */
58 #include <stddef.h>
59 
60 #define ERROR_PTHREAD 1000
61 #define ERROR_MODE    1001
62 #define ERROR_UNIMPL  1002
63 
64 /*
65     Basics
66 */
67 
68 struct pthread_s {
69     HANDLE winthread_handle;
70     DWORD winthread_id;
71 };
72 typedef struct pthread_s *pthread_t; /*  one of the few types that's pointer, not struct  */
73 
74 typedef struct {
75     int i; /*  not yet defined...  */
76 } pthread_attr_t;
77 
78 /*
79     Mutex
80 */
81 
82 typedef struct {
83     int i; /*  not yet defined...  */
84 } pthread_mutexattr_t;
85 
86 typedef struct {
87     CRITICAL_SECTION critsec;
88 } pthread_mutex_t;
89 
90 /*
91     Function prototypes
92 */
93 
94 extern int pthread_create(pthread_t *thread,
95                           pthread_attr_t *attr,
96                           void *(*start_routine)(void *),
97                           void *arg);
98 extern int pthread_join(pthread_t th, void **thread_return);
99 extern void pthread_exit(void *retval);
100 
101 extern int pthread_mutex_init(pthread_mutex_t *mutex, pthread_mutexattr_t *mutex_attr);
102 extern int pthread_mutex_destroy(pthread_mutex_t *mutex);
103 extern int pthread_mutex_lock(pthread_mutex_t *mutex);
104 extern int pthread_mutex_unlock(pthread_mutex_t *mutex);
105 
106 #endif /*  _PTHREAD_H_DEFINED  */
107 
108 #endif /*  EMULATE_PTHREADS  */
109