mirror of https://github.com/PCSX2/pcsx2.git
151 lines
6.5 KiB
HTML
151 lines
6.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
||
<HTML>
|
||
<HEAD>
|
||
<META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=utf-8">
|
||
<TITLE>"PTHREAD_RWLOCK_TIMEDWRLOCK"(P) manual page</TITLE>
|
||
<META NAME="GENERATOR" CONTENT="OpenOffice.org 1.1.3 (Linux)">
|
||
<META NAME="CREATED" CONTENT="20050505;11172800">
|
||
<META NAME="CHANGED" CONTENT="20050505;12561600">
|
||
<!-- manual page source format generated by PolyglotMan v3.2, -->
|
||
<!-- available at http://polyglotman.sourceforge.net/ -->
|
||
</HEAD>
|
||
<BODY LANG="en-GB" BGCOLOR="#ffffff" DIR="LTR">
|
||
<H4>POSIX Threads for Windows – REFERENCE - <A HREF="http://sources.redhat.com/pthreads-win32">Pthreads-w32</A></H4>
|
||
<P><A HREF="index.html">Reference Index</A></P>
|
||
<P><A HREF="#toc">Table of Contents</A></P>
|
||
<H2><A HREF="#toc0" NAME="sect0">Name</A></H2>
|
||
<P>pthread_rwlock_timedwrlock - lock a read-write lock for writing
|
||
</P>
|
||
<H2><A HREF="#toc1" NAME="sect1">Synopsis</A></H2>
|
||
<P><B>#include <pthread.h> <BR></B>#include <time.h>
|
||
</P>
|
||
<P><B>int pthread_rwlock_timedwrlock(pthread_rwlock_t *restrict</B>
|
||
<I>rwlock</I><B>, const struct timespec *restrict</B> <I>abs_timeout</I><B>);
|
||
</B>
|
||
</P>
|
||
<H2><A HREF="#toc2" NAME="sect2">Description</A></H2>
|
||
<P>The <B>pthread_rwlock_timedwrlock</B> function shall apply a write
|
||
lock to the read-write lock referenced by <I>rwlock</I> as in the
|
||
<A HREF="pthread_rwlock_wrlock.html"><B>pthread_rwlock_wrlock</B>(3)</A>
|
||
function. However, if the lock cannot be acquired without waiting for
|
||
other threads to unlock the lock, this wait shall be terminated when
|
||
the specified timeout expires. The timeout shall expire when the
|
||
absolute time specified by <I>abs_timeout</I> passes, as measured by
|
||
the clock on which timeouts are based (that is, when the value of
|
||
that clock equals or exceeds <I>abs_timeout</I>), or if the absolute
|
||
time specified by <I>abs_timeout</I> has already been passed at the
|
||
time of the call.
|
||
</P>
|
||
<P>The <B>timespec</B> data type is defined in the <I><time.h></I>
|
||
header. Under no circumstances shall the function fail with a timeout
|
||
if the lock can be acquired immediately. The validity of the
|
||
<I>abs_timeout</I> parameter need not be checked if the lock can be
|
||
immediately acquired.
|
||
</P>
|
||
<P>The calling thread may deadlock if at the time the call is made it
|
||
holds the read-write lock. The results are undefined if this function
|
||
is called with an uninitialized read-write lock.
|
||
</P>
|
||
<P><B>Pthreads-w32</B> defines <B>_POSIX_READER_WRITER_LOCKS</B> in
|
||
pthread.h as 200112L to indicate that the reader/writer routines are
|
||
implemented and may be used.</P>
|
||
<H2><A HREF="#toc3" NAME="sect3">Return Value</A></H2>
|
||
<P>The <B>pthread_rwlock_timedwrlock</B> function shall return zero
|
||
if the lock for writing on the read-write lock object referenced by
|
||
<I>rwlock</I> is acquired. Otherwise, an error number shall be
|
||
returned to indicate the error.
|
||
</P>
|
||
<H2><A HREF="#toc4" NAME="sect4">Errors</A></H2>
|
||
<P>The <B>pthread_rwlock_timedwrlock</B> function shall fail if:
|
||
</P>
|
||
<DL>
|
||
<DT><B>ETIMEDOUT</B>
|
||
</DT><DD STYLE="margin-bottom: 0.5cm">
|
||
The lock could not be acquired before the specified timeout expired.
|
||
</DD></DL>
|
||
<P>
|
||
The <B>pthread_rwlock_timedwrlock</B> function may fail if:
|
||
</P>
|
||
<DL>
|
||
<DT><B>EINVAL</B>
|
||
</DT><DD STYLE="margin-bottom: 0.5cm">
|
||
The value specified by rwlock does not refer to an initialized
|
||
read-write lock object, or the <I>abs_timeout</I> nanosecond value
|
||
is less than zero or greater than or equal to 1000 million.
|
||
</DD></DL>
|
||
<P>
|
||
This function shall not return an error code of [EINTR].
|
||
</P>
|
||
<P><I>The following sections are informative.</I>
|
||
</P>
|
||
<H2><A HREF="#toc5" NAME="sect5">Examples</A></H2>
|
||
<P>None.
|
||
</P>
|
||
<H2><A HREF="#toc6" NAME="sect6">Application Usage</A></H2>
|
||
<P>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.
|
||
</P>
|
||
<H2><A HREF="#toc7" NAME="sect7">Rationale</A></H2>
|
||
<P>None.
|
||
</P>
|
||
<H2><A HREF="#toc8" NAME="sect8">Future Directions</A></H2>
|
||
<P>None.
|
||
</P>
|
||
<H2><A HREF="#toc9" NAME="sect9">See Also</A></H2>
|
||
<P><A HREF="pthread_rwlock_init.html"><B>pthread_rwlock_destroy</B>(3)</A>
|
||
<B>,</B> <A HREF="pthread_rwlock_rdlock.html"><B>pthread_rwlock_rdlock</B>(3)</A>
|
||
<B>,</B> <A HREF="pthread_rwlock_timedrdlock.html"><B>pthread_rwlock_timedrdlock</B>(3)</A>
|
||
<B>,</B> <A HREF="pthread_rwlock_rdlock.html"><B>pthread_rwlock_tryrdlock</B>(3)</A>
|
||
<B>,</B> <A HREF="pthread_rwlock_wrlock.html"><B>pthread_rwlock_trywrlock</B>(3)</A>
|
||
<B>,</B> <A HREF="pthread_rwlock_unlock.html"><B>pthread_rwlock_unlock</B>(3)</A>
|
||
<B>,</B> <A HREF="pthread_rwlock_wrlock.html"><B>pthread_rwlock_wrlock</B>(3)</A>
|
||
<B>,</B> the Base Definitions volume of IEEE Std 1003.1-2001,
|
||
<I><pthread.h></I>, <I><time.h></I>
|
||
</P>
|
||
<H2><A HREF="#toc10" NAME="sect10">Copyright</A></H2>
|
||
<P>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 <A HREF="http://www.opengroup.org/unix/online.html">http://www.opengroup.org/unix/online.html</A>
|
||
.
|
||
</P>
|
||
<P>Modified by Ross Johnson for use with <A HREF="http://sources.redhat.com/pthreads-win32">Pthreads-w32</A>.</P>
|
||
<HR>
|
||
<P><A NAME="toc"></A><B>Table of Contents</B></P>
|
||
<UL>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect0" NAME="toc0">Name</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect1" NAME="toc1">Synopsis</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect2" NAME="toc2">Description</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect3" NAME="toc3">Return
|
||
Value</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect4" NAME="toc4">Errors</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect5" NAME="toc5">Examples</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect6" NAME="toc6">Application
|
||
Usage</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect7" NAME="toc7">Rationale</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect8" NAME="toc8">Future
|
||
Directions</A>
|
||
</P>
|
||
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect9" NAME="toc9">See
|
||
Also</A>
|
||
</P>
|
||
<LI><P><A HREF="#sect10" NAME="toc10">Copyright</A>
|
||
</P>
|
||
</UL>
|
||
</BODY>
|
||
</HTML>
|