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| author | alex <alex@FreeBSD.org> | 1998-09-07 19:01:43 +0000 |
|---|---|---|
| committer | alex <alex@FreeBSD.org> | 1998-09-07 19:01:43 +0000 |
| commit | fe02148d3f8adf07ccb0cd4f4491ed4eadc9a710 (patch) | |
| tree | be26836ebbbdc58cff84aa54c1c720ab317da73d /include/pthread.h | |
| parent | 06f84d5212709c1fffd29e99fe45de2c81683197 (diff) | |
| download | FreeBSD-src-fe02148d3f8adf07ccb0cd4f4491ed4eadc9a710.zip FreeBSD-src-fe02148d3f8adf07ccb0cd4f4491ed4eadc9a710.tar.gz | |
Implement pthread read/write locks as defined by Version 2 of the Single
UNIX Specification.
As with our standard mutexes, process shared locks are not supported at
this time.
Diffstat (limited to 'include/pthread.h')
| -rw-r--r-- | include/pthread.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/pthread.h b/include/pthread.h index 701328b..0c38271 100644 --- a/include/pthread.h +++ b/include/pthread.h @@ -80,6 +80,12 @@ #define PTHREAD_EXPLICIT_SCHED 0 /* + * Flags for read/write lock attributes + */ +#define PTHREAD_PROCESS_PRIVATE 0 +#define PTHREAD_PROCESS_SHARED 1 + +/* * Forward structure definitions. * * These are mostly opaque to the user. @@ -91,6 +97,8 @@ struct pthread_cond_attr; struct pthread_mutex; struct pthread_mutex_attr; struct pthread_once; +struct pthread_rwlock; +struct pthread_rwlockattr; struct sched_param; /* @@ -108,6 +116,8 @@ typedef struct pthread_cond *pthread_cond_t; typedef struct pthread_cond_attr *pthread_condattr_t; typedef int pthread_key_t; typedef struct pthread_once pthread_once_t; +typedef struct pthread_rwlock *pthread_rwlock_t; +typedef struct pthread_rwlockattr *pthread_rwlockattr_t; /* * Additional type definitions: @@ -142,6 +152,7 @@ struct pthread_once { */ #define PTHREAD_MUTEX_INITIALIZER NULL #define PTHREAD_COND_INITIALIZER NULL +#define PTHREAD_RWLOCK_INITIALIZER NULL /* * Default attribute arguments (draft 4, deprecated). @@ -232,6 +243,20 @@ int pthread_mutex_trylock __P((pthread_mutex_t *)); int pthread_mutex_unlock __P((pthread_mutex_t *)); int pthread_once __P((pthread_once_t *, void (*init_routine) (void))); +int pthread_rwlock_destroy __P((pthread_rwlock_t *)); +int pthread_rwlock_init __P((pthread_rwlock_t *, + const pthread_rwlockattr_t *)); +int pthread_rwlock_rdlock __P((pthread_rwlock_t *)); +int pthread_rwlock_tryrdlock __P((pthread_rwlock_t *)); +int pthread_rwlock_trywrlock __P((pthread_rwlock_t *)); +int pthread_rwlock_unlock __P((pthread_rwlock_t *)); +int pthread_rwlock_wrlock __P((pthread_rwlock_t *)); +int pthread_rwlockattr_init __P((pthread_rwlockattr_t *)); +int pthread_rwlockattr_getpshared __P((const pthread_rwlockattr_t *, + int *)); +int pthread_rwlockattr_setpshared __P((pthread_rwlockattr_t *, + int *)); +int pthread_rwlockattr_destroy __P((pthread_rwlockattr_t *)); pthread_t pthread_self __P((void)); int pthread_setcancelstate __P((int, int *)); int pthread_setcanceltype __P((int, int *)); |
