<!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="20050510;17405600"> <!-- 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> <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 the specified feature 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>