PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

PTHREAD_SPIN_UNLOCK(3P)   POSIX Programmer's Manual  PTHREAD_SPIN_UNLOCK(3P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior), or
       the interface may not be implemented on Linux.

NAME         top

       pthread_spin_unlock — unlock a spin lock object

SYNOPSIS         top

       #include <pthread.h>

       int pthread_spin_unlock(pthread_spinlock_t *lock);

DESCRIPTION         top

       The pthread_spin_unlock() function shall release the spin lock
       referenced by lock which was locked via the pthread_spin_lock() or
       pthread_spin_trylock() functions.

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

       If there are threads spinning on the lock when pthread_spin_unlock()
       is called, the lock becomes available and an unspecified spinning
       thread shall acquire the lock.

       The results are undefined if this function is called with an
       uninitialized thread spin lock.

RETURN VALUE         top

       Upon successful completion, the pthread_spin_unlock() function shall
       return zero; otherwise, an error number shall be returned to indicate
       the error.

ERRORS         top

       This function shall not return an error code of [EINTR].

       The following sections are informative.

EXAMPLES         top

       None.

APPLICATION USAGE         top

       None.

RATIONALE         top

       If an implementation detects that the value specified by the lock
       argument to pthread_spin_unlock() does not refer to an initialized
       spin lock object, it is recommended that the function should fail and
       report an [EINVAL] error.

       If an implementation detects that the value specified by the lock
       argument to pthread_spin_unlock() refers to a spin lock object for
       which the current thread does not hold the lock, it is recommended
       that the function should fail and report an [EPERM] error.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       pthread_spin_destroy(3p), pthread_spin_lock(3p)

       The Base Definitions volume of POSIX.1‐2008, Section 4.11, Memory
       Synchronization, pthread.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) In the event of any discrepancy between this version and
       the original IEEE and The Open Group Standard, the original IEEE and
       The Open Group Standard is the referee document. The original
       Standard can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                 2013             PTHREAD_SPIN_UNLOCK(3P)

Pages that refer to this page: pthread.h(0p)pthread_spin_destroy(3p)pthread_spin_lock(3p)