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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)
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.
pthread_spin_unlock — unlock a spin lock object
#include <pthread.h>
int pthread_spin_unlock(pthread_spinlock_t *lock);
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.
Upon successful completion, the pthread_spin_unlock() function shall
return zero; otherwise, an error number shall be returned to indicate
the error.
This function shall not return an error code of [EINTR].
The following sections are informative.
None.
None.
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.
None.
pthread_spin_destroy(3p), pthread_spin_lock(3p)
The Base Definitions volume of POSIX.1‐2008, Section 4.11, Memory
Synchronization, pthread.h(0p)
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)