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

NAME
     pthread_rwlockattr_setpshared -- set the process shared attribute

LIBRARY
     POSIX Threads Library (libpthread,	-lpthread)

SYNOPSIS
     #include <pthread.h>

     int
     pthread_rwlockattr_setpshared(pthread_rwlockattr_t	*attr, int pshared);

DESCRIPTION
     The pthread_rwlockattr_setpshared() function sets the process shared at-
     tribute of	attr to	the value referenced by	pshared.  The pshared argument
     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 ma-
			      nipulate 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 number will be returned to indicate the error.

ERRORS
     The pthread_rwlockattr_setpshared() function will fail if:

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

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

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

HISTORY
     The pthread_rwlockattr_setpshared() function first	appeared in
     FreeBSD 3.0.  Support for process-shared read/write locks appeared	in
     FreeBSD 11.0.

BSD				 May 31, 2016				   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | HISTORY

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