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Diffstat (limited to 'libc/netbsd/net/reentrant.h')
| -rw-r--r-- | libc/netbsd/net/reentrant.h | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/libc/netbsd/net/reentrant.h b/libc/netbsd/net/reentrant.h deleted file mode 100644 index 15507eb..0000000 --- a/libc/netbsd/net/reentrant.h +++ /dev/null @@ -1,268 +0,0 @@ -/* $NetBSD: reentrant.h,v 1.10 2004/12/14 00:23:19 nathanw Exp $ */ - -/*- - * Copyright (c) 1997, 1998, 2003 The NetBSD Foundation, Inc. - * All rights reserved. - * - * This code is derived from software contributed to The NetBSD Foundation - * by J.T. Conklin, by Nathan J. Williams, and by Jason R. Thorpe. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the NetBSD - * Foundation, Inc. and its contributors. - * 4. Neither the name of The NetBSD Foundation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS - * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * Requirements: - * - * 1. The thread safe mechanism should be lightweight so the library can - * be used by non-threaded applications without unreasonable overhead. - * - * 2. There should be no dependency on a thread engine for non-threaded - * applications. - * - * 3. There should be no dependency on any particular thread engine. - * - * 4. The library should be able to be compiled without support for thread - * safety. - * - * - * Rationale: - * - * One approach for thread safety is to provide discrete versions of the - * library: one thread safe, the other not. The disadvantage of this is - * that libc is rather large, and two copies of a library which are 99%+ - * identical is not an efficent use of resources. - * - * Another approach is to provide a single thread safe library. However, - * it should not add significant run time or code size overhead to non- - * threaded applications. - * - * Since the NetBSD C library is used in other projects, it should be - * easy to replace the mutual exclusion primitives with ones provided by - * another system. Similarly, it should also be easy to remove all - * support for thread safety completely if the target environment does - * not support threads. - * - * - * Implementation Details: - * - * The thread primitives used by the library (mutex_t, mutex_lock, etc.) - * are macros which expand to the cooresponding primitives provided by - * the thread engine or to nothing. The latter is used so that code is - * not unreasonably cluttered with #ifdefs when all thread safe support - * is removed. - * - * The thread macros can be directly mapped to the mutex primitives from - * pthreads, however it should be reasonably easy to wrap another mutex - * implementation so it presents a similar interface. - * - * The thread functions operate by dispatching to symbols which are, by - * default, weak-aliased to no-op functions in thread-stub/thread-stub.c - * (some uses of thread operations are conditional on __isthreaded, but - * not all of them are). - * - * When the thread library is linked in, it provides strong-alias versions - * of those symbols which dispatch to its own real thread operations. - * - */ - -#ifdef _REENTRANT - -/* - * Abtract thread interface for thread-safe libraries. These routines - * will use stubs in libc if the application is not linked against the - * pthread library, and the real function in the pthread library if it - * is. - */ - -#include <pthread.h> -#include <signal.h> - -#define mutex_t pthread_mutex_t -#define MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER - -#define mutexattr_t pthread_mutexattr_t - -#define MUTEX_TYPE_NORMAL PTHREAD_MUTEX_NORMAL -#define MUTEX_TYPE_ERRORCHECK PTHREAD_MUTEX_ERRORCHECK -#define MUTEX_TYPE_RECURSIVE PTHREAD_MUTEX_RECURSIVE - -#define cond_t pthread_cond_t -#define COND_INITIALIZER PTHREAD_COND_INITIALIZER - -#define condattr_t pthread_condattr_t - -#define rwlock_t pthread_rwlock_t -#define RWLOCK_INITIALIZER PTHREAD_RWLOCK_INITIALIZER - -#define rwlockattr_t pthread_rwlockattr_t - -#define thread_key_t pthread_key_t - -#define thr_t pthread_t - -#define thrattr_t pthread_attr_t - -#define once_t pthread_once_t -#define ONCE_INITIALIZER PTHREAD_ONCE_INIT - -#ifndef __LIBC_THREAD_STUBS - -__BEGIN_DECLS -int __libc_mutex_init(mutex_t *, const mutexattr_t *); -int __libc_mutex_lock(mutex_t *); -int __libc_mutex_trylock(mutex_t *); -int __libc_mutex_unlock(mutex_t *); -int __libc_mutex_destroy(mutex_t *); - -int __libc_mutexattr_init(mutexattr_t *); -int __libc_mutexattr_settype(mutexattr_t *, int); -int __libc_mutexattr_destroy(mutexattr_t *); -__END_DECLS - -#define mutex_init(m, a) __libc_mutex_init((m), (a)) -#define mutex_lock(m) __libc_mutex_lock((m)) -#define mutex_trylock(m) __libc_mutex_trylock((m)) -#define mutex_unlock(m) __libc_mutex_unlock((m)) -#define mutex_destroy(m) __libc_mutex_destroy((m)) - -#define mutexattr_init(ma) __libc_mutexattr_init((ma)) -#define mutexattr_settype(ma, t) __libc_mutexattr_settype((ma), (t)) -#define mutexattr_destroy(ma) __libc_mutexattr_destroy((ma)) - -__BEGIN_DECLS -int __libc_cond_init(cond_t *, const condattr_t *); -int __libc_cond_signal(cond_t *); -int __libc_cond_broadcast(cond_t *); -int __libc_cond_wait(cond_t *, mutex_t *); -int __libc_cond_timedwait(cond_t *, mutex_t *, const struct timespec *); -int __libc_cond_destroy(cond_t *); -__END_DECLS - -#define cond_init(c, t, a) __libc_cond_init((c), (a)) -#define cond_signal(c) __libc_cond_signal((c)) -#define cond_broadcast(c) __libc_cond_broadcast((c)) -#define cond_wait(c, m) __libc_cond_wait((c), (m)) -#define cond_timedwait(c, m, t) __libc_cond_timedwait((c), (m), (t)) -#define cond_destroy(c) __libc_cond_destroy((c)) - -__BEGIN_DECLS -int __libc_rwlock_init(rwlock_t *, const rwlockattr_t *); -int __libc_rwlock_rdlock(rwlock_t *); -int __libc_rwlock_wrlock(rwlock_t *); -int __libc_rwlock_tryrdlock(rwlock_t *); -int __libc_rwlock_trywrlock(rwlock_t *); -int __libc_rwlock_unlock(rwlock_t *); -int __libc_rwlock_destroy(rwlock_t *); -__END_DECLS - -#define rwlock_init(l, a) __libc_rwlock_init((l), (a)) -#define rwlock_rdlock(l) __libc_rwlock_rdlock((l)) -#define rwlock_wrlock(l) __libc_rwlock_wrlock((l)) -#define rwlock_tryrdlock(l) __libc_rwlock_tryrdlock((l)) -#define rwlock_trywrlock(l) __libc_rwlock_trywrlock((l)) -#define rwlock_unlock(l) __libc_rwlock_unlock((l)) -#define rwlock_destroy(l) __libc_rwlock_destroy((l)) - -__BEGIN_DECLS -int __libc_thr_keycreate(thread_key_t *, void (*)(void *)); -int __libc_thr_setspecific(thread_key_t, const void *); -void *__libc_thr_getspecific(thread_key_t); -int __libc_thr_keydelete(thread_key_t); -__END_DECLS - -#define thr_keycreate(k, d) __libc_thr_keycreate((k), (d)) -#define thr_setspecific(k, p) __libc_thr_setspecific((k), (p)) -#define thr_getspecific(k) __libc_thr_getspecific((k)) -#define thr_keydelete(k) __libc_thr_keydelete((k)) - -__BEGIN_DECLS -int __libc_thr_once(once_t *, void (*)(void)); -int __libc_thr_sigsetmask(int, const sigset_t *, sigset_t *); -thr_t __libc_thr_self(void); -int __libc_thr_yield(void); -void __libc_thr_create(thr_t *, const thrattr_t *, - void *(*)(void *), void *); -void __libc_thr_exit(void *) __attribute__((__noreturn__)); -int *__libc_thr_errno(void); -int __libc_thr_setcancelstate(int, int *); - -extern int __isthreaded; -__END_DECLS - -#define thr_once(o, f) __libc_thr_once((o), (f)) -#define thr_sigsetmask(f, n, o) __libc_thr_sigsetmask((f), (n), (o)) -#define thr_self() __libc_thr_self() -#define thr_yield() __libc_thr_yield() -#define thr_create(tp, ta, f, a) __libc_thr_create((tp), (ta), (f), (a)) -#define thr_exit(v) __libc_thr_exit((v)) -#define thr_errno() __libc_thr_errno() -#define thr_enabled() (__isthreaded) -#define thr_setcancelstate(n, o) __libc_thr_setcancelstate((n),(o)) -#endif /* __LIBC_THREAD_STUBS */ - -#define FLOCKFILE(fp) __flockfile_internal(fp, 1) -#define FUNLOCKFILE(fp) __funlockfile_internal(fp, 1) - -#else /* _REENTRANT */ - -#define mutex_init(m, a) -#define mutex_lock(m) -#define mutex_trylock(m) -#define mutex_unlock(m) -#define mutex_destroy(m) - -#define cond_init(c, t, a) -#define cond_signal(c) -#define cond_broadcast(c) -#define cond_wait(c, m) -#define cond_timedwait(c, m, t) -#define cond_destroy(c) - -#define rwlock_init(l, a) -#define rwlock_rdlock(l) -#define rwlock_wrlock(l) -#define rwlock_tryrdlock(l) -#define rwlock_trywrlock(l) -#define rwlock_unlock(l) -#define rwlock_destroy(l) - -#define thr_keycreate(k, d) -#define thr_setspecific(k, p) -#define thr_getspecific(k) -#define thr_keydelete(k) - -#define thr_once(o, f) -#define thr_sigsetmask(f, n, o) -#define thr_self() -#define thr_errno() - -#define FLOCKFILE(fp) -#define FUNLOCKFILE(fp) - -#endif /* _REENTRANT */ |