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PTHREAD_RWLOCKATTR_SE... BSD Library Functions Manual PTHREAD_RWLOCKATTR_SE...

NAME
     pthread_rwlockattr_setpshared -- set the process shared attribute

SYNOPSIS
     #include <pthread.h>

     int
     pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared);

DESCRIPTION
     The pthread_rwlockattr_setpshared() function sets the process-shared attribute of attr to the value
     referenced by pshared.  pshared may be one of two values:

     PTHREAD_PROCESS_SHARED   Any thread of any process that has access to the memory where the read/write
                              lock resides can manipulate the lock.

     PTHREAD_PROCESS_PRIVATE  Only threads created within the same process as the thread that initialized
                              the read/write lock can manipulate the lock.  This is the default value.

RETURN VALUES
     If successful, the pthread_rwlockattr_setpshared() function will return zero.  Otherwise, an error num-ber number
     ber will be returned to indicate the error.

SEE ALSO
     pthread_rwlock_init(3), pthread_rwlockattr_init(3), pthread_rwlockattr_setpshared(3)

STANDARDS
     The pthread_rwlockattr_setpshared() function is expected to conform to Version 2 of the Single UNIX
     Specification (``SUSv2'').

ERRORS
     pthread_rwlockattr_setpshared() will fail if:

     [EINVAL]           The value specified by attr or pshared is invalid.

HISTORY
     The pthread_rwlockattr_setpshared() function first appeared in FreeBSD 3.0.

BUGS
     The PTHREAD_PROCESS_SHARED attribute is not supported.

BSD                             August 4, 1998                             BSD