Manual Pages for UNIX Operating System command usage for man pthread_rwlockattr_destroy

Standard C Library Functions          pthread_rwlockattr_init(3C)



NAME
     pthread_rwlockattr_init, pthread_rwlockattr_destroy  -  ini-
     tialize or destroy read-write lock attributes object

SYNOPSIS
     cc -mt [ flag... ] file... -lpthread [ library... ]
     #include 

     int pthread_rwlockattr_init(pthread_rwlockattr_t *attr);


     int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr);


DESCRIPTION
     The pthread_rwlockattr_init() function initializes  a  read-
     write lock attributes object attr with the default value for
     all of the attributes defined by the implementation.


     Results are undefined if pthread_rwlockattr_init() is called
     specifying an already initialized read-write lock attributes
     object.


     After a read-write lock attributes object has been  used  to
     initialize  one  or  more  read-write  locks,  any  function
     affecting the attributes object (including destruction) does
     not affect any previously initialized read-write locks.


     The pthread_rwlockattr_destroy() function destroys  a  read-
     write  lock  attributes object. The effect of subsequent use
     of  the  object  is  undefined  until  the  object  is   re-
     initialized by another call to pthread_rwlockattr_init(). An
     implementation can cause pthread_rwlockattr_destroy() to set
     the object referenced by attr to an invalid value.

RETURN VALUES
     If    successful,    the    pthread_rwlockattr_init()    and
     pthread_rwlockattr_destroy()  functions return 0. Otherwise,
     an error number is returned to indicate the error.

ERRORS
     The pthread_rwlockattr_init() function will fail if:

     ENOMEM    Insufficient  memory  exists  to  initialize   the
               read-write lock attributes object.







SunOS 5.11          Last change: 23 Mar 2005                    1






Standard C Library Functions          pthread_rwlockattr_init(3C)



     The pthread_rwlockattr_destroy() function may fail if:

     EINVAL    The value specified by attr is invalid.


ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|
    | Standard                    | See standards(5).           |
    |_____________________________|_____________________________|


SEE ALSO
     pthread_rwlock_init(3C),          pthread_rwlock_rdlock(3C),
     pthread_rwlock_unlock(3C),        pthread_rwlock_wrlock(3C),
     pthread_rwlockattr_getpshared(3C),   attributes(5),    stan-
     dards(5)




























SunOS 5.11          Last change: 23 Mar 2005                    2