PTHREADRWLOCKATTRSE... BSD Library Functions Manual PTHREADRWLOCKATTRSE...

NAME
     pptthhrreeaaddrrwwlloocckkaattttrrsseettppsshhaarreedd - set the process shared attribute

SYNOPSIS
     ##iinncclluuddee <>

     int
     pptthhrreeaaddrrwwlloocckkaattttrrsseettppsshhaarreedd(pthreadrwlockattrt *attr, int pshared);

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

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

     PTHREADPROCESSPRIVATE  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 pptthhrreeaaddrrwwlloocckkaattttrrsseettppsshhaarreedd() function will return
     zero.  Otherwise an error number will be returned to indicate the error.

SEE ALSO
     pthreadrwlockattrinit(3), pthreadrwlockattrsetpshared(3),
     pthreadrwlockinit(3)

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

EERRRROORRSS
     pptthhrreeaaddrrwwlloocckkaattttrrsseettppsshhaarreedd() will fail if:

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

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

BUGS
     The PTHREADPROCESSSHARED attribute is not supported.

BSD                             August 4, 1998                             BSD