Mercurial > sdl-ios-xcode
view docs/html/sdldestroysemaphore.html @ 1523:21b1fbb53f4a
(patch tweaked a bit)
Date: Tue, 14 Mar 2006 03:30:11 +0000
From: Peter Mulholland
Subject: [SDL] Windows MessageBox() strangeness fixes
Hello all,
I *think* this should fix the issues that people were seeing with
MessageBox() not working and therefore assert() on mingw/msvc. Forgive
me if i've screwed up making the diff file - I'm a total newb when it
comes to things like CVS and diff.
It modifies a few files as I saw that FlushMessageQueue() was in both
the windx5 and windib driver, so I moved this into wincommon. It was
also in the gapi driver, so I changed that too. The function is now
WIN_FlushMessageQueue() in src/video/wincommon/SDL_syswm.c
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 14 Mar 2006 04:00:03 +0000 |
parents | 355632dca928 |
children |
line wrap: on
line source
<HTML ><HEAD ><TITLE >SDL_DestroySemaphore</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Multi-threaded Programming" HREF="thread.html"><LINK REL="PREVIOUS" TITLE="SDL_CreateSemaphore" HREF="sdlcreatesemaphore.html"><LINK REL="NEXT" TITLE="SDL_SemWait" HREF="sdlsemwait.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlcreatesemaphore.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlsemwait.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLDESTROYSEMAPHORE" ></A >SDL_DestroySemaphore</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN7982" ></A ><H2 >Name</H2 >SDL_DestroySemaphore -- Destroys a semaphore that was created by <A HREF="sdlcreatesemaphore.html" >SDL_CreateSemaphore</A >.</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN7986" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN7987" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h" #include "SDL_thread.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >void <B CLASS="FSFUNC" >SDL_DestroySemaphore</B ></CODE >(SDL_sem *sem);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7993" ></A ><H2 >Description</H2 ><P ><TT CLASS="FUNCTION" >SDL_DestroySemaphore</TT > destroys the semaphore pointed to by <TT CLASS="PARAMETER" ><I >sem</I ></TT > that was created by <A HREF="sdlcreatesemaphore.html" ><TT CLASS="FUNCTION" >SDL_CreateSemaphore</TT ></A >. It is not safe to destroy a semaphore if there are threads currently blocked waiting on it.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN8000" ></A ><H2 >Examples</H2 ><P ><PRE CLASS="PROGRAMLISTING" >if (my_sem != NULL) { SDL_DestroySemaphore(my_sem); my_sem = NULL; }</PRE ></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN8004" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlcreatesemaphore.html" ><TT CLASS="FUNCTION" >SDL_CreateSemaphore</TT ></A >, <A HREF="sdlsemwait.html" ><TT CLASS="FUNCTION" >SDL_SemWait</TT ></A >, <A HREF="sdlsemtrywait.html" ><TT CLASS="FUNCTION" >SDL_SemTryWait</TT ></A >, <A HREF="sdlsemwaittimeout.html" ><TT CLASS="FUNCTION" >SDL_SemWaitTimeout</TT ></A >, <A HREF="sdlsempost.html" ><TT CLASS="FUNCTION" >SDL_SemPost</TT ></A >, <A HREF="sdlsemvalue.html" ><TT CLASS="FUNCTION" >SDL_SemValue</TT ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlcreatesemaphore.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlsemwait.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_CreateSemaphore</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="thread.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_SemWait</TD ></TR ></TABLE ></DIV ></BODY ></HTML >