1 /* Implement a trivial subset of POSIX 1003.1-2008 pthread.h.
3 Copyright (C) 2009-2012 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, see <http://www.gnu.org/licenses/>. */
18 /* Written by Paul Eggert and Glen Lenker. */
20 #ifndef _@GUARD_PREFIX@_PTHREAD_H_
23 @PRAGMA_SYSTEM_HEADER@
27 /* The include_next requires a split double-inclusion guard. */
29 # @INCLUDE_NEXT@ @NEXT_PTHREAD_H@
32 #ifndef _@GUARD_PREFIX@_PTHREAD_H_
33 #define _@GUARD_PREFIX@_PTHREAD_H_
38 #include <sys/types.h>
41 _GL_INLINE_HEADER_BEGIN
42 #ifndef _GL_PTHREAD_INLINE
43 # define _GL_PTHREAD_INLINE _GL_INLINE
46 #if ! @HAVE_PTHREAD_T@
47 # if !GNULIB_defined_pthread_types
48 typedef int pthread_t;
49 typedef int pthread_attr_t;
50 typedef int pthread_barrier_t;
51 typedef int pthread_barrierattr_t;
52 typedef int pthread_cond_t;
53 typedef int pthread_condattr_t;
54 typedef int pthread_key_t;
55 typedef int pthread_mutex_t;
56 typedef int pthread_mutexattr_t;
57 typedef int pthread_once_t;
58 typedef int pthread_rwlock_t;
59 typedef int pthread_rwlockattr_t;
60 # define GNULIB_defined_pthread_types 1
64 #ifndef PTHREAD_COND_INITIALIZER
65 #define PTHREAD_COND_INITIALIZER { 0 }
66 #define PTHREAD_MUTEX_INITIALIZER { 0 }
67 #define PTHREAD_ONCE_INIT { 0 }
68 #define PTHREAD_RWLOCK_INITIALIZER { 0 }
70 #define PTHREAD_BARRIER_SERIAL_THREAD (-1)
72 #define PTHREAD_CANCEL_DEFERRED 0
73 #define PTHREAD_CANCEL_ASYNCHRONOUS 1
75 #define PTHREAD_CANCEL_ENABLE 0
76 #define PTHREAD_CANCEL_DISABLE 1
78 #define PTHREAD_CANCELED ((void *) -1)
80 #define PTHREAD_CREATE_JOINABLE 0
81 #define PTHREAD_CREATE_DETACHED 1
83 #define PTHREAD_INHERIT_SCHED 0
84 #define PTHREAD_EXPLICIT_SCHED 1
86 #define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
87 #define PTHREAD_MUTEX_NORMAL 0
88 #define PTHREAD_MUTEX_ERRORCHECK 1
89 #define PTHREAD_MUTEX_RECURSIVE 2
91 #define PTHREAD_MUTEX_STALLED 0
92 #define PTHREAD_MUTEX_ROBUST 1
94 #define PTHREAD_PRIO_NONE 0
95 #define PTHREAD_PRIO_INHERIT 1
96 #define PTHREAD_PRIO_PROTECT 2
98 #define PTHREAD_PROCESS_PRIVATE 0
99 #define PTHREAD_PROCESS_SHARED 1
101 #define PTHREAD_SCOPE_SYSTEM 0
102 #define PTHREAD_SCOPE_PROCESS 1
105 #if ! @HAVE_PTHREAD_T@
107 # if !GNULIB_defined_pthread_functions
109 /* Provide substitutes for the thread functions that should work
110 adequately on a single-threaded implementation, where
111 pthread_create always fails. The goal is to let programs compile
112 on non-pthread hosts with minimal runtime overhead.
114 Omit interfaces that have not been analyzed and for which we do not
115 know what to do, so that they elicit a compile-time error for
118 _GL_PTHREAD_INLINE int
119 pthread_cond_destroy (pthread_cond_t *cond)
121 /* COND is never seriously used. */
125 _GL_PTHREAD_INLINE int
126 pthread_cond_init (pthread_cond_t *restrict cond,
127 pthread_condattr_t const *restrict attr)
129 /* COND is never seriously used. */
133 _GL_PTHREAD_INLINE int
134 pthread_cond_signal (pthread_cond_t *cond)
136 /* No threads can currently be blocked on COND. */
140 _GL_PTHREAD_INLINE int
141 pthread_cond_wait (pthread_cond_t *restrict cond,
142 pthread_mutex_t *restrict mutex)
144 /* Properly-written applications never come here. */
149 _GL_PTHREAD_INLINE int
150 pthread_create (pthread_t *restrict thread,
151 pthread_attr_t const *restrict attr,
152 void * (*start_routine) (void*), void *restrict arg)
154 /* Do not create a thread. */
158 _GL_PTHREAD_INLINE void
159 pthread_exit (void *value)
161 /* There is just one thread, so the process exits. */
165 _GL_PTHREAD_INLINE int
166 pthread_join (pthread_t thread, void **pvalue)
168 /* Properly-written applications never come here. */
173 _GL_PTHREAD_INLINE int
174 pthread_mutexattr_destroy (pthread_mutexattr_t *attr)
179 _GL_PTHREAD_INLINE int
180 pthread_mutexattr_init (pthread_mutexattr_t *attr)
185 _GL_PTHREAD_INLINE int
186 pthread_mutexattr_settype (pthread_mutexattr_t *attr, int attr_type)
191 _GL_PTHREAD_INLINE int
192 pthread_mutex_destroy (pthread_mutex_t *mutex)
194 /* MUTEX is never seriously used. */
198 _GL_PTHREAD_INLINE int
199 pthread_mutex_init (pthread_mutex_t *restrict mutex,
200 pthread_mutexattr_t const *restrict attr)
202 /* MUTEX is never seriously used. */
206 _GL_PTHREAD_INLINE int
207 pthread_mutex_lock (pthread_mutex_t *mutex)
209 /* There is only one thread, so it always gets the lock. This
210 implementation does not support PTHREAD_MUTEX_ERRORCHECK. */
214 _GL_PTHREAD_INLINE int
215 pthread_mutex_trylock (pthread_mutex_t *mutex)
217 return pthread_mutex_lock (mutex);
220 _GL_PTHREAD_INLINE int
221 pthread_mutex_unlock (pthread_mutex_t *mutex)
223 /* There is only one thread, so it always unlocks successfully.
224 This implementation does not support robust mutexes or
225 PTHREAD_MUTEX_ERRORCHECK. */
229 # define GNULIB_defined_pthread_functions 1
234 #if ! @HAVE_PTHREAD_SPINLOCK_T@
236 # if !GNULIB_defined_pthread_spinlock_t
238 /* Approximate spinlocks with mutexes. */
240 typedef pthread_mutex_t pthread_spinlock_t;
242 _GL_PTHREAD_INLINE int
243 pthread_spin_init (pthread_spinlock_t *lock, int pshared)
245 return pthread_mutex_init (lock, NULL);
248 _GL_PTHREAD_INLINE int
249 pthread_spin_destroy (pthread_spinlock_t *lock)
251 return pthread_mutex_destroy (lock);
254 _GL_PTHREAD_INLINE int
255 pthread_spin_lock (pthread_spinlock_t *lock)
257 return pthread_mutex_lock (lock);
260 _GL_PTHREAD_INLINE int
261 pthread_spin_trylock (pthread_spinlock_t *lock)
263 return pthread_mutex_trylock (lock);
266 _GL_PTHREAD_INLINE int
267 pthread_spin_unlock (pthread_spinlock_t *lock)
269 return pthread_mutex_unlock (lock);
272 # define GNULIB_defined_pthread_spinlock_t 1
277 _GL_INLINE_HEADER_END
279 #endif /* _@GUARD_PREFIX@_PTHREAD_H_ */
280 #endif /* _@GUARD_PREFIX@_PTHREAD_H_ */