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PTHREAD_BARRIER_INI... FreeBSD Library Functions Manual PTHREAD_BARRIER_INI... NAME pthread_barrier_init, pthread_barrier_destroy -- initialize and destroy a barrier object SYNOPSIS #include <pthread.h> int pthread_barrier_init(pthread_barrier_t *barrier, pthread_barrierattr_t *attr, unsigned int count); int pthread_barrier_destroy(pthread_barrier_t *barrier); DESCRIPTION The pthread_barrier_init() function creates a new barrier object, with attributes specified with attr and with a threshold specified with count. If attr is NULL the default attributes are used. The count argument is later used by the pthread_barrier_wait() function to check if the re- quired number of threads reached the barrier. The pthread_barrier_destroy() function frees the resources allocated for barrier. RETURN VALUES If successful, pthread_barrier_init() and pthread_barrier_destroy() re- turn zero; otherwise an error number is returned to indicate the error. ERRORS pthread_barrier_init() will fail if: [EINVAL] The value specified by barrier or attr is invalid. [ENOMEM] The process cannot allocate enough memory to create another barrier object. [ENOTSUP] The attributes specified by attr are not supported by the current implementation. pthread_barrier_destroy() will fail if: [EINVAL] The value specified by barrier is invalid. [EBUSY] There are still threads waiting on the barrier. SEE ALSO pthread_barrier_wait(3), pthread_barrierattr_getpshared(3), pthread_barrierattr_init(3) STANDARDS pthread_barrier_init() and pthread_barrier_destroy() conform to IEEE Std 1003.1-2008 ("POSIX.1"). BUGS Currently only private barriers are supported and the pshared attribute is always set that way. Any attempts to change that value will trigger ENOTSUP. FreeBSD 13.0 April 6, 2020 FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | BUGS
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