diff options
Diffstat (limited to 'libthreads/rwlock.h')
| -rw-r--r-- | libthreads/rwlock.h | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/libthreads/rwlock.h b/libthreads/rwlock.h index 1a61eeea..44d9a35d 100644 --- a/libthreads/rwlock.h +++ b/libthreads/rwlock.h @@ -21,6 +21,13 @@ #include <cthreads.h> #include <assert.h> +#include <features.h> + +#ifdef RWLOCK_DEFINE_EI +#define RWLOCK_EI +#else +#define RWLOCK_EI __extern_inline +#endif struct rwlock { @@ -31,9 +38,17 @@ struct rwlock int readers_waiting; }; -#ifndef RWLOCK_EI -#define RWLOCK_EI extern inline -#endif +extern void rwlock_reader_lock (struct rwlock *lock); + +extern void rwlock_writer_lock (struct rwlock *lock); + +extern void rwlock_reader_unlock (struct rwlock *lock); + +extern void rwlock_writer_unlock (struct rwlock *lock); + +extern void rwlock_init (struct rwlock *lock); + +#if defined(__USE_EXTERN_INLINES) || defined(RWLOCK_DEFINE_EI) /* Get a reader lock on reader-writer lock LOCK for disknode DN */ RWLOCK_EI void @@ -104,6 +119,8 @@ rwlock_init (struct rwlock *lock) lock->writers_waiting = 0; } +#endif /* Use extern inlines. */ + #define RWLOCK_INITIALIZER \ { MUTEX_INITIALIZER, CONDITION_INITIALIZER, 0, 0, 0 } |