[mirror_edk2.git] / StdLibPrivateInternalFiles / Include / reentrant.h

/*	$NetBSD: reentrant.h,v 1.10 2004/12/14 00:23:19 nathanw Exp $	*/\r
\r
/*-\r
 * Copyright (c) 1997, 1998, 2003 The NetBSD Foundation, Inc.\r
 * All rights reserved.\r
 *\r
 * This code is derived from software contributed to The NetBSD Foundation\r
 * by J.T. Conklin, by Nathan J. Williams, and by Jason R. Thorpe.\r
 *\r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 * 3. All advertising materials mentioning features or use of this software\r
 *    must display the following acknowledgement:\r
 *        This product includes software developed by the NetBSD\r
 *        Foundation, Inc. and its contributors.\r
 * 4. Neither the name of The NetBSD Foundation nor the names of its\r
 *    contributors may be used to endorse or promote products derived\r
 *    from this software without specific prior written permission.\r
 *\r
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS\r
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED\r
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS\r
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
 * POSSIBILITY OF SUCH DAMAGE.\r
 */\r
\r
/*\r
 * Requirements:\r
 * \r
 * 1. The thread safe mechanism should be lightweight so the library can\r
 *    be used by non-threaded applications without unreasonable overhead.\r
 * \r
 * 2. There should be no dependency on a thread engine for non-threaded\r
 *    applications.\r
 * \r
 * 3. There should be no dependency on any particular thread engine.\r
 * \r
 * 4. The library should be able to be compiled without support for thread\r
 *    safety.\r
 * \r
 * \r
 * Rationale:\r
 * \r
 * One approach for thread safety is to provide discrete versions of the\r
 * library: one thread safe, the other not.  The disadvantage of this is\r
 * that libc is rather large, and two copies of a library which are 99%+\r
 * identical is not an efficent use of resources.\r
 * \r
 * Another approach is to provide a single thread safe library.  However,\r
 * it should not add significant run time or code size overhead to non-\r
 * threaded applications.\r
 * \r
 * Since the NetBSD C library is used in other projects, it should be\r
 * easy to replace the mutual exclusion primitives with ones provided by\r
 * another system.  Similarly, it should also be easy to remove all\r
 * support for thread safety completely if the target environment does\r
 * not support threads.\r
 * \r
 * \r
 * Implementation Details:\r
 * \r
 * The thread primitives used by the library (mutex_t, mutex_lock, etc.)\r
 * are macros which expand to the cooresponding primitives provided by\r
 * the thread engine or to nothing.  The latter is used so that code is\r
 * not unreasonably cluttered with #ifdefs when all thread safe support\r
 * is removed.\r
 * \r
 * The thread macros can be directly mapped to the mutex primitives from\r
 * pthreads, however it should be reasonably easy to wrap another mutex\r
 * implementation so it presents a similar interface.\r
 * \r
 * The thread functions operate by dispatching to symbols which are, by\r
 * default, weak-aliased to no-op functions in thread-stub/thread-stub.c\r
 * (some uses of thread operations are conditional on __isthreaded, but\r
 * not all of them are).\r
 *\r
 * When the thread library is linked in, it provides strong-alias versions\r
 * of those symbols which dispatch to its own real thread operations.\r
 *\r
 */\r
\r
#ifdef _REENTRANT\r
\r
/*\r
 * Abtract thread interface for thread-safe libraries.  These routines\r
 * will use stubs in libc if the application is not linked against the\r
 * pthread library, and the real function in the pthread library if it\r
 * is.\r
 */\r
\r
#include <pthread.h>\r
#include <signal.h>\r
\r
#define	mutex_t			pthread_mutex_t\r
#define	MUTEX_INITIALIZER	PTHREAD_MUTEX_INITIALIZER\r
\r
#define	mutexattr_t		pthread_mutexattr_t\r
\r
#define	MUTEX_TYPE_NORMAL	PTHREAD_MUTEX_NORMAL\r
#define	MUTEX_TYPE_ERRORCHECK	PTHREAD_MUTEX_ERRORCHECK\r
#define	MUTEX_TYPE_RECURSIVE	PTHREAD_MUTEX_RECURSIVE\r
\r
#define	cond_t			pthread_cond_t\r
#define	COND_INITIALIZER	PTHREAD_COND_INITIALIZER\r
\r
#define	condattr_t		pthread_condattr_t\r
\r
#define	rwlock_t		pthread_rwlock_t\r
#define	RWLOCK_INITIALIZER	PTHREAD_RWLOCK_INITIALIZER\r
\r
#define	rwlockattr_t		pthread_rwlockattr_t\r
\r
#define	thread_key_t		pthread_key_t\r
\r
#define	thr_t			pthread_t\r
\r
#define	thrattr_t		pthread_attr_t\r
\r
#define	once_t			pthread_once_t\r
#define	ONCE_INITIALIZER	PTHREAD_ONCE_INIT\r
\r
#ifndef __LIBC_THREAD_STUBS\r
\r
__BEGIN_DECLS\r
int	__libc_mutex_init(mutex_t *, const mutexattr_t *);\r
int	__libc_mutex_lock(mutex_t *);\r
int	__libc_mutex_trylock(mutex_t *);\r
int	__libc_mutex_unlock(mutex_t *);\r
int	__libc_mutex_destroy(mutex_t *);\r
\r
int	__libc_mutexattr_init(mutexattr_t *);\r
int	__libc_mutexattr_settype(mutexattr_t *, int);\r
int	__libc_mutexattr_destroy(mutexattr_t *);\r
__END_DECLS\r
\r
#define	mutex_init(m, a)	__libc_mutex_init((m), (a))\r
#define	mutex_lock(m)		__libc_mutex_lock((m))\r
#define	mutex_trylock(m)	__libc_mutex_trylock((m))\r
#define	mutex_unlock(m)		__libc_mutex_unlock((m))\r
#define	mutex_destroy(m)	__libc_mutex_destroy((m))\r
\r
#define	mutexattr_init(ma)	__libc_mutexattr_init((ma))\r
#define	mutexattr_settype(ma, t) __libc_mutexattr_settype((ma), (t))\r
#define	mutexattr_destroy(ma)	__libc_mutexattr_destroy((ma))\r
\r
__BEGIN_DECLS\r
int	__libc_cond_init(cond_t *, const condattr_t *);\r
int	__libc_cond_signal(cond_t *);\r
int	__libc_cond_broadcast(cond_t *);\r
int	__libc_cond_wait(cond_t *, mutex_t *);\r
int	__libc_cond_timedwait(cond_t *, mutex_t *, const struct timespec *);\r
int	__libc_cond_destroy(cond_t *);\r
__END_DECLS\r
\r
#define	cond_init(c, t, a)     	__libc_cond_init((c), (a))\r
#define	cond_signal(c)		__libc_cond_signal((c))\r
#define	cond_broadcast(c)	__libc_cond_broadcast((c))\r
#define	cond_wait(c, m)		__libc_cond_wait((c), (m))\r
#define	cond_timedwait(c, m, t)	__libc_cond_timedwait((c), (m), (t))\r
#define	cond_destroy(c)		__libc_cond_destroy((c))\r
\r
__BEGIN_DECLS\r
int	__libc_rwlock_init(rwlock_t *, const rwlockattr_t *);\r
int	__libc_rwlock_rdlock(rwlock_t *);\r
int	__libc_rwlock_wrlock(rwlock_t *);\r
int	__libc_rwlock_tryrdlock(rwlock_t *);\r
int	__libc_rwlock_trywrlock(rwlock_t *);\r
int	__libc_rwlock_unlock(rwlock_t *);\r
int	__libc_rwlock_destroy(rwlock_t *);\r
__END_DECLS\r
\r
#define	rwlock_init(l, a)	__libc_rwlock_init((l), (a))\r
#define	rwlock_rdlock(l)	__libc_rwlock_rdlock((l))\r
#define	rwlock_wrlock(l)	__libc_rwlock_wrlock((l))\r
#define	rwlock_tryrdlock(l)	__libc_rwlock_tryrdlock((l))\r
#define	rwlock_trywrlock(l)	__libc_rwlock_trywrlock((l))\r
#define	rwlock_unlock(l)	__libc_rwlock_unlock((l))\r
#define	rwlock_destroy(l)	__libc_rwlock_destroy((l))\r
\r
__BEGIN_DECLS\r
int	__libc_thr_keycreate(thread_key_t *, void (*)(void *));\r
int	__libc_thr_setspecific(thread_key_t, const void *);\r
void	*__libc_thr_getspecific(thread_key_t);\r
int	__libc_thr_keydelete(thread_key_t);\r
__END_DECLS\r
\r
#define	thr_keycreate(k, d)	__libc_thr_keycreate((k), (d))\r
#define	thr_setspecific(k, p)	__libc_thr_setspecific((k), (p))\r
#define	thr_getspecific(k)	__libc_thr_getspecific((k))\r
#define	thr_keydelete(k)	__libc_thr_keydelete((k))\r
\r
__BEGIN_DECLS\r
int	__libc_thr_once(once_t *, void (*)(void));\r
int	__libc_thr_sigsetmask(int, const sigset_t *, sigset_t *);\r
thr_t	__libc_thr_self(void);\r
int	__libc_thr_yield(void);\r
void	__libc_thr_create(thr_t *, const thrattr_t *,\r
	    void *(*)(void *), void *);\r
void	__libc_thr_exit(void *) __attribute__((__noreturn__));\r
int	*__libc_thr_errno(void);\r
int	__libc_thr_setcancelstate(int, int *);\r
\r
extern int __isthreaded;\r
__END_DECLS\r
\r
#define	thr_once(o, f)		__libc_thr_once((o), (f))\r
#define	thr_sigsetmask(f, n, o)	__libc_thr_sigsetmask((f), (n), (o))\r
#define	thr_self()		__libc_thr_self()\r
#define	thr_yield()		__libc_thr_yield()\r
#define	thr_create(tp, ta, f, a) __libc_thr_create((tp), (ta), (f), (a))\r
#define	thr_exit(v)		__libc_thr_exit((v))\r
#define	thr_errno()		__libc_thr_errno()\r
#define	thr_enabled()		(__isthreaded)\r
#define thr_setcancelstate(n, o) __libc_thr_setcancelstate((n),(o))\r
#endif /* __LIBC_THREAD_STUBS */\r
\r
#define	FLOCKFILE(fp)		__flockfile_internal(fp, 1)\r
#define	FUNLOCKFILE(fp)		__funlockfile_internal(fp, 1)\r
\r
#else /* _REENTRANT */\r
\r
#define	mutex_init(m, a)\r
#define	mutex_lock(m)\r
#define	mutex_trylock(m)\r
#define	mutex_unlock(m)\r
#define	mutex_destroy(m)\r
\r
#define	cond_init(c, t, a)\r
#define	cond_signal(c)\r
#define	cond_broadcast(c)\r
#define	cond_wait(c, m)\r
#define	cond_timedwait(c, m, t)\r
#define	cond_destroy(c)\r
\r
#define	rwlock_init(l, a)\r
#define	rwlock_rdlock(l)\r
#define	rwlock_wrlock(l)\r
#define	rwlock_tryrdlock(l)\r
#define	rwlock_trywrlock(l)\r
#define	rwlock_unlock(l)\r
#define	rwlock_destroy(l)\r
\r
#define	thr_keycreate(k, d)\r
#define	thr_setspecific(k, p)\r
#define	thr_getspecific(k)\r
#define	thr_keydelete(k)\r
\r
#define	thr_once(o, f)\r
#define	thr_sigsetmask(f, n, o)\r
#define	thr_self()\r
#define	thr_errno()\r
\r
#define	FLOCKFILE(fp)		\r
#define	FUNLOCKFILE(fp)		\r
\r
#endif /* _REENTRANT */\r
Commit	Line	Data
2aa62f2b	1	/* $NetBSD: reentrant.h,v 1.10 2004/12/14 00:23:19 nathanw Exp $ */\r
	2	\r
	3	/*-\r
	4	* Copyright (c) 1997, 1998, 2003 The NetBSD Foundation, Inc.\r
	5	* All rights reserved.\r
	6	*\r
	7	* This code is derived from software contributed to The NetBSD Foundation\r
	8	* by J.T. Conklin, by Nathan J. Williams, and by Jason R. Thorpe.\r
	9	*\r
	10	* Redistribution and use in source and binary forms, with or without\r
	11	* modification, are permitted provided that the following conditions\r
	12	* are met:\r
	13	* 1. Redistributions of source code must retain the above copyright\r
	14	* notice, this list of conditions and the following disclaimer.\r
	15	* 2. Redistributions in binary form must reproduce the above copyright\r
	16	* notice, this list of conditions and the following disclaimer in the\r
	17	* documentation and/or other materials provided with the distribution.\r
	18	* 3. All advertising materials mentioning features or use of this software\r
	19	* must display the following acknowledgement:\r
	20	* This product includes software developed by the NetBSD\r
	21	* Foundation, Inc. and its contributors.\r
	22	* 4. Neither the name of The NetBSD Foundation nor the names of its\r
	23	* contributors may be used to endorse or promote products derived\r
	24	* from this software without specific prior written permission.\r
	25	*\r
	26	* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS\r
	27	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED\r
	28	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
	29	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS\r
	30	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
	31	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
	32	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
	33	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
	34	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
	35	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
	36	* POSSIBILITY OF SUCH DAMAGE.\r
	37	*/\r
	38	\r
	39	/*\r
	40	* Requirements:\r
	41	* \r
	42	* 1. The thread safe mechanism should be lightweight so the library can\r
	43	* be used by non-threaded applications without unreasonable overhead.\r
	44	* \r
	45	* 2. There should be no dependency on a thread engine for non-threaded\r
	46	* applications.\r
	47	* \r
	48	* 3. There should be no dependency on any particular thread engine.\r
	49	* \r
	50	* 4. The library should be able to be compiled without support for thread\r
	51	* safety.\r
	52	* \r
	53	* \r
	54	* Rationale:\r
	55	* \r
	56	* One approach for thread safety is to provide discrete versions of the\r
	57	* library: one thread safe, the other not. The disadvantage of this is\r
	58	* that libc is rather large, and two copies of a library which are 99%+\r
	59	* identical is not an efficent use of resources.\r
	60	* \r
	61	* Another approach is to provide a single thread safe library. However,\r
	62	* it should not add significant run time or code size overhead to non-\r
	63	* threaded applications.\r
	64	* \r
65	* Since the NetBSD C library is used in other projects, it should be\r
66	* easy to replace the mutual exclusion primitives with ones provided by\r
67	* another system. Similarly, it should also be easy to remove all\r
68	* support for thread safety completely if the target environment does\r
69	* not support threads.\r
70	* \r
71	* \r
72	* Implementation Details:\r
73	* \r
74	* The thread primitives used by the library (mutex_t, mutex_lock, etc.)\r
75	* are macros which expand to the cooresponding primitives provided by\r
76	* the thread engine or to nothing. The latter is used so that code is\r
77	* not unreasonably cluttered with #ifdefs when all thread safe support\r
78	* is removed.\r
79	* \r
80	* The thread macros can be directly mapped to the mutex primitives from\r
81	* pthreads, however it should be reasonably easy to wrap another mutex\r
82	* implementation so it presents a similar interface.\r
83	* \r
84	* The thread functions operate by dispatching to symbols which are, by\r
85	* default, weak-aliased to no-op functions in thread-stub/thread-stub.c\r
86	* (some uses of thread operations are conditional on __isthreaded, but\r
87	* not all of them are).\r
88	*\r
89	* When the thread library is linked in, it provides strong-alias versions\r
90	* of those symbols which dispatch to its own real thread operations.\r
91	*\r
92	*/\r
93	\r
94	#ifdef _REENTRANT\r
95	\r
96	/*\r
97	* Abtract thread interface for thread-safe libraries. These routines\r
98	* will use stubs in libc if the application is not linked against the\r
99	* pthread library, and the real function in the pthread library if it\r
100	* is.\r
101	*/\r
102	\r
103	#include <pthread.h>\r
104	#include <signal.h>\r
105	\r
106	#define mutex_t pthread_mutex_t\r
107	#define MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER\r
108	\r
109	#define mutexattr_t pthread_mutexattr_t\r
110	\r
111	#define MUTEX_TYPE_NORMAL PTHREAD_MUTEX_NORMAL\r
112	#define MUTEX_TYPE_ERRORCHECK PTHREAD_MUTEX_ERRORCHECK\r
113	#define MUTEX_TYPE_RECURSIVE PTHREAD_MUTEX_RECURSIVE\r
114	\r
115	#define cond_t pthread_cond_t\r
116	#define COND_INITIALIZER PTHREAD_COND_INITIALIZER\r
117	\r
118	#define condattr_t pthread_condattr_t\r
119	\r
120	#define rwlock_t pthread_rwlock_t\r
121	#define RWLOCK_INITIALIZER PTHREAD_RWLOCK_INITIALIZER\r
122	\r
123	#define rwlockattr_t pthread_rwlockattr_t\r
124	\r
125	#define thread_key_t pthread_key_t\r
126	\r
127	#define thr_t pthread_t\r
128	\r
129	#define thrattr_t pthread_attr_t\r
130	\r
131	#define once_t pthread_once_t\r
132	#define ONCE_INITIALIZER PTHREAD_ONCE_INIT\r
133	\r
134	#ifndef __LIBC_THREAD_STUBS\r
135	\r
136	__BEGIN_DECLS\r
137	int __libc_mutex_init(mutex_t , const mutexattr_t );\r
138	int __libc_mutex_lock(mutex_t *);\r
139	int __libc_mutex_trylock(mutex_t *);\r
140	int __libc_mutex_unlock(mutex_t *);\r
141	int __libc_mutex_destroy(mutex_t *);\r
142	\r
143	int __libc_mutexattr_init(mutexattr_t *);\r
144	int __libc_mutexattr_settype(mutexattr_t *, int);\r
145	int __libc_mutexattr_destroy(mutexattr_t *);\r
146	__END_DECLS\r
147	\r
148	#define mutex_init(m, a) __libc_mutex_init((m), (a))\r
149	#define mutex_lock(m) __libc_mutex_lock((m))\r
150	#define mutex_trylock(m) __libc_mutex_trylock((m))\r
151	#define mutex_unlock(m) __libc_mutex_unlock((m))\r
152	#define mutex_destroy(m) __libc_mutex_destroy((m))\r
153	\r
154	#define mutexattr_init(ma) __libc_mutexattr_init((ma))\r
155	#define mutexattr_settype(ma, t) __libc_mutexattr_settype((ma), (t))\r
156	#define mutexattr_destroy(ma) __libc_mutexattr_destroy((ma))\r
157	\r
158	__BEGIN_DECLS\r
159	int __libc_cond_init(cond_t , const condattr_t );\r
160	int __libc_cond_signal(cond_t *);\r
161	int __libc_cond_broadcast(cond_t *);\r
162	int __libc_cond_wait(cond_t , mutex_t );\r
163	int __libc_cond_timedwait(cond_t , mutex_t , const struct timespec *);\r
164	int __libc_cond_destroy(cond_t *);\r
165	__END_DECLS\r
166	\r
167	#define cond_init(c, t, a) __libc_cond_init((c), (a))\r
168	#define cond_signal(c) __libc_cond_signal((c))\r
169	#define cond_broadcast(c) __libc_cond_broadcast((c))\r
170	#define cond_wait(c, m) __libc_cond_wait((c), (m))\r
171	#define cond_timedwait(c, m, t) __libc_cond_timedwait((c), (m), (t))\r
172	#define cond_destroy(c) __libc_cond_destroy((c))\r
173	\r
174	__BEGIN_DECLS\r
175	int __libc_rwlock_init(rwlock_t , const rwlockattr_t );\r
176	int __libc_rwlock_rdlock(rwlock_t *);\r
177	int __libc_rwlock_wrlock(rwlock_t *);\r
178	int __libc_rwlock_tryrdlock(rwlock_t *);\r
179	int __libc_rwlock_trywrlock(rwlock_t *);\r
180	int __libc_rwlock_unlock(rwlock_t *);\r
181	int __libc_rwlock_destroy(rwlock_t *);\r
182	__END_DECLS\r
183	\r
184	#define rwlock_init(l, a) __libc_rwlock_init((l), (a))\r
185	#define rwlock_rdlock(l) __libc_rwlock_rdlock((l))\r
186	#define rwlock_wrlock(l) __libc_rwlock_wrlock((l))\r
187	#define rwlock_tryrdlock(l) __libc_rwlock_tryrdlock((l))\r
188	#define rwlock_trywrlock(l) __libc_rwlock_trywrlock((l))\r
189	#define rwlock_unlock(l) __libc_rwlock_unlock((l))\r
190	#define rwlock_destroy(l) __libc_rwlock_destroy((l))\r
191	\r
192	__BEGIN_DECLS\r
193	int __libc_thr_keycreate(thread_key_t , void ()(void *));\r
194	int __libc_thr_setspecific(thread_key_t, const void *);\r
195	void *__libc_thr_getspecific(thread_key_t);\r
196	int __libc_thr_keydelete(thread_key_t);\r
197	__END_DECLS\r
198	\r
199	#define thr_keycreate(k, d) __libc_thr_keycreate((k), (d))\r
200	#define thr_setspecific(k, p) __libc_thr_setspecific((k), (p))\r
201	#define thr_getspecific(k) __libc_thr_getspecific((k))\r
202	#define thr_keydelete(k) __libc_thr_keydelete((k))\r
203	\r
204	__BEGIN_DECLS\r
205	int __libc_thr_once(once_t , void ()(void));\r
206	int __libc_thr_sigsetmask(int, const sigset_t , sigset_t );\r
207	thr_t __libc_thr_self(void);\r
208	int __libc_thr_yield(void);\r
209	void __libc_thr_create(thr_t , const thrattr_t ,\r
210	void ()(void ), void );\r
211	void __libc_thr_exit(void *) __attribute__((__noreturn__));\r
212	int *__libc_thr_errno(void);\r
213	int __libc_thr_setcancelstate(int, int *);\r
214	\r
215	extern int __isthreaded;\r
216	__END_DECLS\r
217	\r
218	#define thr_once(o, f) __libc_thr_once((o), (f))\r
219	#define thr_sigsetmask(f, n, o) __libc_thr_sigsetmask((f), (n), (o))\r
220	#define thr_self() __libc_thr_self()\r
221	#define thr_yield() __libc_thr_yield()\r
222	#define thr_create(tp, ta, f, a) __libc_thr_create((tp), (ta), (f), (a))\r
223	#define thr_exit(v) __libc_thr_exit((v))\r
224	#define thr_errno() __libc_thr_errno()\r
225	#define thr_enabled() (__isthreaded)\r
226	#define thr_setcancelstate(n, o) __libc_thr_setcancelstate((n),(o))\r
227	#endif /* __LIBC_THREAD_STUBS */\r
228	\r
229	#define FLOCKFILE(fp) __flockfile_internal(fp, 1)\r
230	#define FUNLOCKFILE(fp) __funlockfile_internal(fp, 1)\r
231	\r
232	#else /* _REENTRANT */\r
233	\r
234	#define mutex_init(m, a)\r
235	#define mutex_lock(m)\r
236	#define mutex_trylock(m)\r
237	#define mutex_unlock(m)\r
238	#define mutex_destroy(m)\r
239	\r
240	#define cond_init(c, t, a)\r
241	#define cond_signal(c)\r
242	#define cond_broadcast(c)\r
243	#define cond_wait(c, m)\r
244	#define cond_timedwait(c, m, t)\r
245	#define cond_destroy(c)\r
246	\r
247	#define rwlock_init(l, a)\r
248	#define rwlock_rdlock(l)\r
249	#define rwlock_wrlock(l)\r
250	#define rwlock_tryrdlock(l)\r
251	#define rwlock_trywrlock(l)\r
252	#define rwlock_unlock(l)\r
253	#define rwlock_destroy(l)\r
254	\r
255	#define thr_keycreate(k, d)\r
256	#define thr_setspecific(k, p)\r
257	#define thr_getspecific(k)\r
258	#define thr_keydelete(k)\r
259	\r
260	#define thr_once(o, f)\r
261	#define thr_sigsetmask(f, n, o)\r
262	#define thr_self()\r
263	#define thr_errno()\r
264	\r
265	#define FLOCKFILE(fp) \r
266	#define FUNLOCKFILE(fp) \r
267	\r
268	#endif /* _REENTRANT */\r