"PTHREAD_SPIN_UNLOCK"(P) manual page

From 41f88a82b33cdb357c83b582381232733ed2d039 Mon Sep 17 00:00:00 2001 From: rpj Date: Thu, 5 May 2005 14:18:27 +0000 Subject: '' --- manual/pthread_spin_unlock.html | 122 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 manual/pthread_spin_unlock.html (limited to 'manual/pthread_spin_unlock.html') diff --git a/manual/pthread_spin_unlock.html b/manual/pthread_spin_unlock.html new file mode 100644 index 0000000..52a22b7 --- /dev/null +++ b/manual/pthread_spin_unlock.html @@ -0,0 +1,122 @@ + + + + + "PTHREAD_SPIN_UNLOCK"(P) manual page + + + + + + + +

Table of Contents

Name

pthread_spin_unlock - unlock a spin lock object (ADVANCED +REALTIME THREADS) +

Synopsis

#include <pthread.h> +

int pthread_spin_unlock(pthread_spinlock_t *lock); + +

Description

The pthread_spin_unlock function shall release the spin +lock referenced by lock which was locked via the +pthread_spin_lock(3) or +pthread_spin_trylock(3) +functions. 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. +

Pthreads-w32 does not check ownership of the lock and it is +therefore possible for a thread other than the locker to unlock the +spin lock. This is not a feature that should be exploited.

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

Return Value

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

Errors

The pthread_spin_unlock function may fail if: +

EINVAL +: + An invalid argument was specified. +; +
+

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

The following sections are informative. +

Examples

None. +

Application Usage

Pthreads-w32 does not check ownership of the lock and it is +therefore possible for a thread other than the locker to unlock the +spin lock. This is not a feature that should be exploited.

Rationale

None. +

Future Directions

None. +

Copyright

Portions of this text are reprinted and reproduced in electronic +form from IEEE Std 1003.1, 2003 Edition, Standard for Information +Technology -- Portable Operating System Interface (POSIX), The Open +Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the +Institute of Electrical and Electronics Engineers, Inc and The Open +Group. 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.opengroup.org/unix/online.html +. +

Modified by Ross Johnson for use with Pthreads-w32.

Table of Contents

Name +
+
Synopsis +
+
Description +
+
Return + Value +
+
Errors +
+
Examples +
+
Application + Usage +
+
Rationale +
+
Future + Directions +
+
See + Also +
+
Copyright +
+

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