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PTHREAD_BARRIERATTR(3)     Library Functions Manual     PTHREAD_BARRIERATTR(3)

NAME
     pthread_barrierattr_init, pthread_barrierattr_destroy,
     pthread_barrierattr_getpshared, pthread_barrierattr_setpshared - barrier
     attribute operations

LIBRARY
     POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS
     #include <pthread.h>

     int
     pthread_barrierattr_init(pthread_barrierattr_t *attr);

     int
     pthread_barrierattr_destroy(pthread_barrierattr_t *attr);

     int
     pthread_barrierattr_getpshared(const pthread_barrierattr_t * __restrict attr,
         int * __restrict pshared);

     int
     pthread_barrierattr_setpshared(pthread_barrierattr_t * attr,
         int pshared);

DESCRIPTION
     Barrier attributes are used to specify parameters to be used with
     pthread_barrier_init(3).  One attribute object can be used in multiple
     calls to pthread_barrier_init(), with or without modifications between
     calls.

     The pthread_barrierattr_init() function initializes attr with the default
     barrier attributes.

     The pthread_barrierattr_destroy() function destroys attr.

     The pthread_barrierattr_getpshared() function shall obtain the value of
     the process-shared attribute from the attributes object referenced by
     attr.

     The pthread_barrierattr_setpshared() function shall set the process-
     shared attribute in an initialized attributes object referenced by attr.

RETURN VALUES
     If successful, these functions return 0.  Otherwise, an error number is
     returned to indicate the error.

ERRORS
     No error codes are defined for pthread_barrierattr_init().

     The pthread_barrierattr_destroy() function may fail if:

     [EINVAL]           The value specified by attr is invalid.

     The pthread_barrierattr_getpshared() and pthread_barrierattr_setpshared()
     may fail if:

     [EINVAL]           The value specified by attr is invalid.

SEE ALSO
     pthread_barrier_init(3)

STANDARDS
     Both functions conform to IEEE Std 1003.1-2001 ("POSIX.1").

BUGS
     The pthread_barrierattr_getpshared() and pthread_barrierattr_setpshared()
     functions are hidden by default since only thread shared attributes are
     supported.

NetBSD 8.0                       June 12, 2016                      NetBSD 8.0