| <HTML |
| ><HEAD |
| ><TITLE |
| >SDL_mutexP</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_DestroyMutex" |
| HREF="sdldestroymutex.html"><LINK |
| REL="NEXT" |
| TITLE="SDL_mutexV" |
| HREF="sdlmutexv.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="sdldestroymutex.html" |
| ACCESSKEY="P" |
| >Prev</A |
| ></TD |
| ><TD |
| WIDTH="80%" |
| ALIGN="center" |
| VALIGN="bottom" |
| ></TD |
| ><TD |
| WIDTH="10%" |
| ALIGN="right" |
| VALIGN="bottom" |
| ><A |
| HREF="sdlmutexv.html" |
| ACCESSKEY="N" |
| >Next</A |
| ></TD |
| ></TR |
| ></TABLE |
| ><HR |
| ALIGN="LEFT" |
| WIDTH="100%"></DIV |
| ><H1 |
| ><A |
| NAME="SDLMUTEXP" |
| ></A |
| >SDL_mutexP</H1 |
| ><DIV |
| CLASS="REFNAMEDIV" |
| ><A |
| NAME="AEN7872" |
| ></A |
| ><H2 |
| >Name</H2 |
| >SDL_mutexP -- Lock a mutex</DIV |
| ><DIV |
| CLASS="REFSYNOPSISDIV" |
| ><A |
| NAME="AEN7875" |
| ></A |
| ><H2 |
| >Synopsis</H2 |
| ><DIV |
| CLASS="FUNCSYNOPSIS" |
| ><A |
| NAME="AEN7876" |
| ></A |
| ><P |
| ></P |
| ><PRE |
| CLASS="FUNCSYNOPSISINFO" |
| >#include "SDL.h" |
| #include "SDL_thread.h"</PRE |
| ><P |
| ><CODE |
| ><CODE |
| CLASS="FUNCDEF" |
| >int <B |
| CLASS="FSFUNC" |
| >SDL_mutexP</B |
| ></CODE |
| >(SDL_mutex *mutex);</CODE |
| ></P |
| ><P |
| ></P |
| ></DIV |
| ></DIV |
| ><DIV |
| CLASS="REFSECT1" |
| ><A |
| NAME="AEN7882" |
| ></A |
| ><H2 |
| >Description</H2 |
| ><P |
| >Locks the <TT |
| CLASS="PARAMETER" |
| ><I |
| >mutex</I |
| ></TT |
| >, which was previously created with <A |
| HREF="sdlcreatemutex.html" |
| ><TT |
| CLASS="FUNCTION" |
| >SDL_CreateMutex</TT |
| ></A |
| >. If the mutex is already locked then <TT |
| CLASS="FUNCTION" |
| >SDL_mutexP</TT |
| > will not return until it is <A |
| HREF="sdlmutexv.html" |
| >unlocked</A |
| >. Returns <SPAN |
| CLASS="RETURNVALUE" |
| >0</SPAN |
| > on success, or <SPAN |
| CLASS="RETURNVALUE" |
| >-1</SPAN |
| > on an error.</P |
| ><P |
| >SDL also defines a macro <TT |
| CLASS="LITERAL" |
| >#define SDL_LockMutex(m) SDL_mutexP(m)</TT |
| >.</P |
| ></DIV |
| ><DIV |
| CLASS="REFSECT1" |
| ><A |
| NAME="AEN7894" |
| ></A |
| ><H2 |
| >See Also</H2 |
| ><P |
| ><A |
| HREF="sdlcreatemutex.html" |
| ><TT |
| CLASS="FUNCTION" |
| >SDL_CreateMutex</TT |
| ></A |
| >, |
| <A |
| HREF="sdlmutexv.html" |
| ><TT |
| CLASS="FUNCTION" |
| >SDL_mutexV</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="sdldestroymutex.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="sdlmutexv.html" |
| ACCESSKEY="N" |
| >Next</A |
| ></TD |
| ></TR |
| ><TR |
| ><TD |
| WIDTH="33%" |
| ALIGN="left" |
| VALIGN="top" |
| >SDL_DestroyMutex</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_mutexV</TD |
| ></TR |
| ></TABLE |
| ></DIV |
| ></BODY |
| ></HTML |
| > |
