Mercurial > sdl-ios-xcode
view docs/html/sdlmutexp.html @ 4135:cd98d1dc385c SDL-1.2
Damien Carbery fixed bug #542
In SDL 1.2.13 sdl.m4 the AM_PATH_SDL function looks for sdl-config.
It sets the PATH:
PATH="$prefix/bin:$prefix/usr/bin:$PATH"
but does not save the current PATH or restore the current PATH at the end.
This breaks the build on Solaris because we have GNU tools in another dir
(listed at the top of PATH) but non-GNU tools with the same names in
$prefix/bin. Later configure tests finds the non-GNU tools and quits in error
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Thu, 24 Jan 2008 15:50:20 +0000 |
parents | 355632dca928 |
children |
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<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 >