<HTML ><HEAD ><TITLE >SDL_CondWait</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.64 "><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_CondBroadcast" HREF="sdlcondbroadcast.html"><LINK REL="NEXT" TITLE="SDL_CondWaitTimeout" HREF="sdlcondwaittimeout.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><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="sdlcondbroadcast.html" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlcondwaittimeout.html" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLCONDWAIT" >SDL_CondWait</A ></H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN7815" ></A ><H2 >Name</H2 >SDL_CondWait -- Wait on a condition variable</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN7818" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN7819" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h" #include "SDL_thread.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >int <B CLASS="FSFUNC" >SDL_CondWait</B ></CODE >(SDL_cond *cond, SDL_mutex *mut);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7825" ></A ><H2 >Description</H2 ><P >Wait on the condition variable <TT CLASS="PARAMETER" ><I >cond</I ></TT > and unlock the provided mutex. The mutex must the locked before entering this function. Returns <SPAN CLASS="RETURNVALUE" >0</SPAN > when it is signalled, or <SPAN CLASS="RETURNVALUE" >-1</SPAN > on an error.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN7831" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlcondwaittimeout.html" ><TT CLASS="FUNCTION" >SDL_CondWaitTimeout</TT ></A >, <A HREF="sdlcondsignal.html" ><TT CLASS="FUNCTION" >SDL_CondSignal</TT ></A >, <A HREF="sdlmutexp.html" ><TT CLASS="FUNCTION" >SDL_mutexP</TT ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlcondbroadcast.html" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlcondwaittimeout.html" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_CondBroadcast</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="thread.html" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_CondWaitTimeout</TD ></TR ></TABLE ></DIV ></BODY ></HTML >