diff options
| author | Eric Andersen <andersen@codepoet.org> | 2003-02-27 18:13:05 +0000 |
|---|---|---|
| committer | Eric Andersen <andersen@codepoet.org> | 2003-02-27 18:13:05 +0000 |
| commit | 187dd78d7bd1c03fcf16e54a30314512d38e1a4a (patch) | |
| tree | 9780638e5286b40da74a128c9f540a9ea720862f /include | |
| parent | d4d6e2c50565da18253cd0d6f3332484142b6587 (diff) | |
Major update for pthreads, based in large part on improvements
from glibc 2.3. This should make threads much more efficient.
-Erik
Diffstat (limited to 'include')
| -rw-r--r-- | include/semaphore.h | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/include/semaphore.h b/include/semaphore.h index 84742233b..9c283c864 100644 --- a/include/semaphore.h +++ b/include/semaphore.h @@ -17,6 +17,10 @@ #include <features.h> #include <sys/types.h> +#ifdef __USE_XOPEN2K +# define __need_timespec +# include <time.h> +#endif #ifndef _PTHREAD_DESCR_DEFINED /* Thread descriptors. Needed for `sem_t' definition. */ @@ -27,11 +31,7 @@ typedef struct _pthread_descr_struct *_pthread_descr; /* System specific semaphore definition. */ typedef struct { - struct - { - long int status; - int spinlock; - } __sem_lock; + struct _pthread_fastlock __sem_lock; int __sem_value; _pthread_descr __sem_waiting; } sem_t; @@ -49,31 +49,39 @@ __BEGIN_DECLS /* Initialize semaphore object SEM to VALUE. If PSHARED then share it with other processes. */ -extern int sem_init __P ((sem_t *__sem, int __pshared, unsigned int __value)); +extern int sem_init (sem_t *__sem, int __pshared, unsigned int __value) __THROW; /* Free resources associated with semaphore object SEM. */ -extern int sem_destroy __P ((sem_t *__sem)); +extern int sem_destroy (sem_t *__sem) __THROW; /* Open a named semaphore NAME with open flaot OFLAG. */ -extern sem_t *sem_open __P ((__const char *__name, int __oflag, ...)); +extern sem_t *sem_open (__const char *__name, int __oflag, ...) __THROW; /* Close descriptor for named semaphore SEM. */ -extern int sem_close __P ((sem_t *__sem)); +extern int sem_close (sem_t *__sem) __THROW; /* Remove named semaphore NAME. */ -extern int sem_unlink __P ((__const char *__name)); +extern int sem_unlink (__const char *__name) __THROW; /* Wait for SEM being posted. */ -extern int sem_wait __P ((sem_t *__sem)); +extern int sem_wait (sem_t *__sem) __THROW; + +#ifdef __USE_XOPEN2K +/* Similar to `sem_wait' but wait only until ABSTIME. */ +extern int sem_timedwait (sem_t *__restrict __sem, + __const struct timespec *__restrict __abstime) + __THROW; +#endif /* Test whether SEM is posted. */ -extern int sem_trywait __P ((sem_t *__sem)); +extern int sem_trywait (sem_t *__sem) __THROW; /* Post SEM. */ -extern int sem_post __P ((sem_t *__sem)); +extern int sem_post (sem_t *__sem) __THROW; /* Get current value of SEM and store it in *SVAL. */ -extern int sem_getvalue __P ((sem_t *__sem, int *__sval)); +extern int sem_getvalue (sem_t *__restrict __sem, int *__restrict __sval) + __THROW; __END_DECLS |