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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "PTHREAD_SPIN_LOCK" 3P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" pthread_spin_lock 
+.SH PROLOG
+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.
+.SH NAME
+pthread_spin_lock, pthread_spin_trylock \- lock a spin lock object
+(\fBADVANCED REALTIME THREADS\fP)
+.SH SYNOPSIS
+.LP
+\fB#include <pthread.h>
+.br
+.sp
+int pthread_spin_lock(pthread_spinlock_t *\fP\fIlock\fP\fB);
+.br
+int pthread_spin_trylock(pthread_spinlock_t *\fP\fIlock\fP\fB); \fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIpthread_spin_lock\fP() function shall lock the spin lock referenced
+by \fIlock\fP. The calling thread shall acquire the
+lock if it is not held by another thread. Otherwise, the thread shall
+spin (that is, shall not return from the
+\fIpthread_spin_lock\fP() call) until the lock becomes available.
+The results are undefined if the calling thread holds the lock
+at the time the call is made. The \fIpthread_spin_trylock\fP() function
+shall lock the spin lock referenced by \fIlock\fP if it
+is not held by any thread. Otherwise, the function shall fail.
+.LP
+The results are undefined if any of these functions is called with
+an uninitialized spin lock.
+.SH RETURN VALUE
+.LP
+Upon successful completion, these functions shall return zero; otherwise,
+an error number shall be returned to indicate the
+error.
+.SH ERRORS
+.LP
+These functions may fail if:
+.TP 7
+.B EINVAL
+The value specified by \fIlock\fP does not refer to an initialized
+spin lock object.
+.sp
+.LP
+The \fIpthread_spin_lock\fP() function may fail if:
+.TP 7
+.B EDEADLK
+The calling thread already holds the lock.
+.sp
+.LP
+The \fIpthread_spin_trylock\fP() function shall fail if:
+.TP 7
+.B EBUSY
+A thread currently holds the lock.
+.sp
+.LP
+These functions shall not return an error code of [EINTR].
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+Applications using this function may be subject to priority inversion,
+as discussed in the Base Definitions volume of
+IEEE\ Std\ 1003.1-2001, Section 3.285, Priority Inversion.
+.LP
+The \fIpthread_spin_lock\fP() and \fIpthread_spin_trylock\fP() functions
+are part of the Spin Locks option and need not be
+provided on all implementations.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIpthread_spin_destroy\fP(), \fIpthread_spin_unlock\fP(), the Base
+Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<pthread.h>\fP
+.SH 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 .