PTHREADRWLOCKUNLOCK(3) BSD Library Functions Manual PTHREADRWLOCKUNLOCK(3)

NAME
     pptthhrreeaaddrrwwlloocckkuunnlloocckk - release a read/write lock

SYNOPSIS
     ##iinncclluuddee <>

     int
     pptthhrreeaaddrrwwlloocckkuunnlloocckk(pthreadrwlockt *lock);

DESCRIPTION
     The pptthhrreeaaddrrwwlloocckkuunnlloocckk() function is used to release the read/write
     lock previously obtained by pptthhrreeaaddrrwwlloocckkrrddlloocckk(),
     pptthhrreeaaddrrwwlloocckkwwrrlloocckk(), pptthhrreeaaddrrwwlloocckkttrryyrrddlloocckk(), or
     pptthhrreeaaddrrwwlloocckkttrryywwrrlloocckk().

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

     The results are undefined if lock is not held by the calling thread.

SEE ALSO
     pthreadrwlockrdlock(3), pthreadrwlockwrlock(3)

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

EERRRROORRSS
     The pptthhrreeaaddrrwwlloocckkuunnlloocckk() function may fail if:

     [EINVAL]           The value specified by lock is invalid.

     [EPERM]            The current thread does not own the read/write lock.

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

BSD                             August 4, 1998                             BSD