diff options
Diffstat (limited to 'tirpc/reentrant.h')
| -rw-r--r-- | tirpc/reentrant.h | 107 |
1 files changed, 28 insertions, 79 deletions
diff --git a/tirpc/reentrant.h b/tirpc/reentrant.h index fda8f65..9489b15 100644 --- a/tirpc/reentrant.h +++ b/tirpc/reentrant.h @@ -13,13 +13,6 @@ * 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 @@ -33,95 +26,51 @@ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * - * $FreeBSD: src/lib/libc/include/reentrant.h,v 1.2 2002/11/01 09:37:17 dfr Exp $ */ -/* - * 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 mutex 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 mutex 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. - * - * Stub implementations of the mutex functions are provided with *weak* - * linkage. These functions simply return success. When linked with a - * thread library (i.e. -lpthread), the functions will override the - * stubs. +/* + * This file was derived from a copy in FreeBSD CVS on August 26, 2010. + * FreeBSD/NetBSD have slightly different definitions for some/most of + * these functions and types, so they should just use the ones found + * in their system copy of reentrant.h. + * These definitions are only guaranteed to be valid on Linux. */ -#ifndef _REENTRANT_H -#define _REENTRANT_H -#include <pthread.h> -#include <libc_private.h> -#include <stdlib.h> +#if defined(__linux__) + +#include <pthread.h> #define mutex_t pthread_mutex_t #define cond_t pthread_cond_t #define rwlock_t pthread_rwlock_t +#define once_t pthread_once_t #define thread_key_t pthread_key_t #define MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER #define RWLOCK_INITIALIZER PTHREAD_RWLOCK_INITIALIZER +#define ONCE_INITIALIZER PTHREAD_ONCE_INIT + #define mutex_init(m, a) pthread_mutex_init(m, a) #define mutex_lock(m) pthread_mutex_lock(m) #define mutex_unlock(m) pthread_mutex_unlock(m) -#define mutex_trylock(m) pthread_mutex_trylock(m) -#define cond_init(c, a, p) pthread_cond_init(c, a) -#define cond_signal(m) pthread_cond_signal(m) -#define cond_broadcast(m) pthread_cond_broadcast(m) -#define cond_wait(c, m) pthread_cond_wait(c, m) +#define cond_init(c, a, p) pthread_cond_init(c, a) +#define cond_signal(m) pthread_cond_signal(m) +#define cond_broadcast(m) pthread_cond_broadcast(m) +#define cond_wait(c, m) pthread_cond_wait(c, m) -#define rwlock_init(l, a) pthread_rwlock_init(l, a) -#define rwlock_rdlock(l) pthread_rwlock_rdlock(l) -#define rwlock_wrlock(l) pthread_rwlock_wrlock(l) -#define rwlock_unlock(l) pthread_rwlock_unlock(l) +#define rwlock_init(l, a) pthread_rwlock_init(l, a) +#define rwlock_rdlock(l) pthread_rwlock_rdlock(l) +#define rwlock_wrlock(l) pthread_rwlock_wrlock(l) +#define rwlock_unlock(l) pthread_rwlock_unlock(l) -#define thr_keycreate(k, d) pthread_key_create(k, d) -#define thr_keydelete(k) pthread_key_delete(k) -#define thr_setspecific(k, p) pthread_setspecific(k, p) -#define thr_getspecific(k) pthread_getspecific(k) -#define thr_sigsetmask(f, n, o) pthread_sigmask(f, n, o) +#define thr_keycreate(k, d) pthread_key_create(k, d) +#define thr_setspecific(k, p) pthread_setspecific(k, p) +#define thr_getspecific(k) pthread_getspecific(k) +#define thr_sigsetmask(f, n, o) pthread_sigmask(f, n, o) -#define thr_self() pthread_self() -#define thr_exit(x) pthread_exit(x) +#define thr_once(o, i) pthread_once(o, i) +#define thr_self() pthread_self() +#define thr_exit(x) pthread_exit(x) -#endif /* reentrant.h */ +#endif |