<!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_WIN32_TEST_FEATURES_NP manual page</TITLE> <META NAME="GENERATOR" CONTENT="OpenOffice.org 1.1.3 (Linux)"> <META NAME="CREATED" CONTENT="20050505;322600"> <META NAME="CHANGED" CONTENT="20050505;22310200"> <!-- 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 STYLE="font-weight: medium">pthread_win32_test_features_np – find out what features were detected at process attach time.</P> <H2><A HREF="#toc1" NAME="sect1">Synopsis</A></H2> <P><B>#include <pthread.h></B> </P> <P><B>BOOL pthread_win32_test_features_np(int</B> <I>mask</I><B>);</B></P> <H2><A HREF="#toc2" NAME="sect2">Description</A></H2> <P><B>pthread_win32_test_features_np</B> allows an application to check which run-time auto-detected features are available within the library.</P> <P>The possible features are:</P> <P><B>PTW32_SYSTEM_INTERLOCKED_COMPARE_EXCHANGE</B></P> <P STYLE="margin-left: 2cm">Return TRUE if the Win32 version of InterlockedCompareExchange() is being used. On IA32 systems the library can use optimised and inlinable assembler versions of InterlockedExchange() and InterlockedCompareExchange().</P> <P><B>PTW32_ALERTABLE_ASYNC_CANCEL</B></P> <P STYLE="margin-left: 2cm">Return TRUE if the QueueUserAPCEx package QUSEREX.DLL and the AlertDrv.sys driver was detected. This package provides alertable (pre-emptive) asynchronous threads cancellation. If this feature returns FALSE then the default async cancel scheme is in use, which cannot cancel blocked threads.</P> <P>Features may be OR'ed into the mask parameter, in which case the routine returns TRUE if any of the OR'ed features would return TRUE. At this stage it doesn't make sense to OR features but it may some day.</P> <H2><A HREF="#toc3" NAME="sect3">Cancellation</A></H2> <P>None.</P> <H2><A HREF="#toc4" NAME="sect4"><FONT COLOR="#000080">Return Value</FONT></A></H2> <P><B>pthread_win32_test_features_np</B> returns TRUE (non-zero) if any of the specified features is present, and FALSE (0) otherwise.</P> <H2><A HREF="#toc5" NAME="sect5">Errors</A></H2> <P>None.</P> <H2><A HREF="#toc6" NAME="sect6">Author</A></H2> <P>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">Cancellation</A> </P> <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect4" NAME="toc4">Return Value</A> </P> <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect5" NAME="toc5">Errors</A> </P> <LI><P><A HREF="#sect6" NAME="toc6">Author</A> </P> </UL> </BODY> </HTML>