Mercurial > sdl-ios-xcode
annotate docs/html/sdlmutexp.html @ 4207:a673f44949d6 SDL-1.2
Fixed bug #562
this patch by Diego Pettenò <flameeyes@gentoo.org> for SDL-1.2:
The attached patch applies over latest ~arch SDL version, and allows to use the
xinerama support to launch an application full screened on the head "0".
The SDL_VIDEO_FULLSCREEN_HEAD environment variable sets the head on which the
full screen will be displayed, but if you set it to 0, the code simply ignores
it as unset. My patch changes the unset value to -1, so that the 0 value can be
used correctly. Without this, trying to get fullscreen on head 0 would get the
same result than not having xinerama enabled at all.
http://sources.gentoo.org/media-libs/libsdl/files/libsdl-1.2.11-xinerama-head-0.patch
SDL-1.3 doesnt seem to have any code like this, but it's still good for SDL-1.2
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 21 Sep 2009 07:20:51 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_mutexP</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Multi-threaded Programming" | |
| 14 HREF="thread.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_DestroyMutex" | |
| 17 HREF="sdldestroymutex.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_mutexV" | |
| 20 HREF="sdlmutexv.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="REFENTRY" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
| 0 | 32 WIDTH="100%" |
| 33 BORDER="0" | |
| 34 CELLPADDING="0" | |
| 35 CELLSPACING="0" | |
| 36 ><TR | |
| 37 ><TH | |
| 38 COLSPAN="3" | |
| 39 ALIGN="center" | |
| 40 >SDL Library Documentation</TH | |
| 41 ></TR | |
| 42 ><TR | |
| 43 ><TD | |
| 44 WIDTH="10%" | |
| 45 ALIGN="left" | |
| 46 VALIGN="bottom" | |
| 47 ><A | |
| 48 HREF="sdldestroymutex.html" | |
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49 ACCESSKEY="P" |
| 0 | 50 >Prev</A |
| 51 ></TD | |
| 52 ><TD | |
| 53 WIDTH="80%" | |
| 54 ALIGN="center" | |
| 55 VALIGN="bottom" | |
| 56 ></TD | |
| 57 ><TD | |
| 58 WIDTH="10%" | |
| 59 ALIGN="right" | |
| 60 VALIGN="bottom" | |
| 61 ><A | |
| 62 HREF="sdlmutexv.html" | |
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63 ACCESSKEY="N" |
| 0 | 64 >Next</A |
| 65 ></TD | |
| 66 ></TR | |
| 67 ></TABLE | |
| 68 ><HR | |
| 69 ALIGN="LEFT" | |
| 70 WIDTH="100%"></DIV | |
| 71 ><H1 | |
| 72 ><A | |
| 73 NAME="SDLMUTEXP" | |
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74 ></A |
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75 >SDL_mutexP</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN7872" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_mutexP -- Lock a mutex</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN7875" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN7876" |
| 0 | 95 ></A |
| 96 ><P | |
| 97 ></P | |
| 98 ><PRE | |
| 99 CLASS="FUNCSYNOPSISINFO" | |
| 100 >#include "SDL.h" | |
| 101 #include "SDL_thread.h"</PRE | |
| 102 ><P | |
| 103 ><CODE | |
| 104 ><CODE | |
| 105 CLASS="FUNCDEF" | |
| 106 >int <B | |
| 107 CLASS="FSFUNC" | |
| 108 >SDL_mutexP</B | |
| 109 ></CODE | |
| 110 >(SDL_mutex *mutex);</CODE | |
| 111 ></P | |
| 112 ><P | |
| 113 ></P | |
| 114 ></DIV | |
| 115 ></DIV | |
| 116 ><DIV | |
| 117 CLASS="REFSECT1" | |
| 118 ><A | |
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119 NAME="AEN7882" |
| 0 | 120 ></A |
| 121 ><H2 | |
| 122 >Description</H2 | |
| 123 ><P | |
| 124 >Locks the <TT | |
| 125 CLASS="PARAMETER" | |
| 126 ><I | |
| 127 >mutex</I | |
| 128 ></TT | |
| 129 >, which was previously created with <A | |
| 130 HREF="sdlcreatemutex.html" | |
| 131 ><TT | |
| 132 CLASS="FUNCTION" | |
| 133 >SDL_CreateMutex</TT | |
| 134 ></A | |
| 135 >. If the mutex is already locked then <TT | |
| 136 CLASS="FUNCTION" | |
| 137 >SDL_mutexP</TT | |
| 138 > will not return until it is <A | |
| 139 HREF="sdlmutexv.html" | |
| 140 >unlocked</A | |
| 141 >. Returns <SPAN | |
| 142 CLASS="RETURNVALUE" | |
| 143 >0</SPAN | |
| 144 > on success, or <SPAN | |
| 145 CLASS="RETURNVALUE" | |
| 146 >-1</SPAN | |
| 147 > on an error.</P | |
| 148 ><P | |
| 149 >SDL also defines a macro <TT | |
| 150 CLASS="LITERAL" | |
| 151 >#define SDL_LockMutex(m) SDL_mutexP(m)</TT | |
| 152 >.</P | |
| 153 ></DIV | |
| 154 ><DIV | |
| 155 CLASS="REFSECT1" | |
| 156 ><A | |
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157 NAME="AEN7894" |
| 0 | 158 ></A |
| 159 ><H2 | |
| 160 >See Also</H2 | |
| 161 ><P | |
| 162 ><A | |
| 163 HREF="sdlcreatemutex.html" | |
| 164 ><TT | |
| 165 CLASS="FUNCTION" | |
| 166 >SDL_CreateMutex</TT | |
| 167 ></A | |
| 168 >, | |
| 169 <A | |
| 170 HREF="sdlmutexv.html" | |
| 171 ><TT | |
| 172 CLASS="FUNCTION" | |
| 173 >SDL_mutexV</TT | |
| 174 ></A | |
| 175 ></P | |
| 176 ></DIV | |
| 177 ><DIV | |
| 178 CLASS="NAVFOOTER" | |
| 179 ><HR | |
| 180 ALIGN="LEFT" | |
| 181 WIDTH="100%"><TABLE | |
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182 SUMMARY="Footer navigation table" |
| 0 | 183 WIDTH="100%" |
| 184 BORDER="0" | |
| 185 CELLPADDING="0" | |
| 186 CELLSPACING="0" | |
| 187 ><TR | |
| 188 ><TD | |
| 189 WIDTH="33%" | |
| 190 ALIGN="left" | |
| 191 VALIGN="top" | |
| 192 ><A | |
| 193 HREF="sdldestroymutex.html" | |
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194 ACCESSKEY="P" |
| 0 | 195 >Prev</A |
| 196 ></TD | |
| 197 ><TD | |
| 198 WIDTH="34%" | |
| 199 ALIGN="center" | |
| 200 VALIGN="top" | |
| 201 ><A | |
| 202 HREF="index.html" | |
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203 ACCESSKEY="H" |
| 0 | 204 >Home</A |
| 205 ></TD | |
| 206 ><TD | |
| 207 WIDTH="33%" | |
| 208 ALIGN="right" | |
| 209 VALIGN="top" | |
| 210 ><A | |
| 211 HREF="sdlmutexv.html" | |
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212 ACCESSKEY="N" |
| 0 | 213 >Next</A |
| 214 ></TD | |
| 215 ></TR | |
| 216 ><TR | |
| 217 ><TD | |
| 218 WIDTH="33%" | |
| 219 ALIGN="left" | |
| 220 VALIGN="top" | |
| 221 >SDL_DestroyMutex</TD | |
| 222 ><TD | |
| 223 WIDTH="34%" | |
| 224 ALIGN="center" | |
| 225 VALIGN="top" | |
| 226 ><A | |
| 227 HREF="thread.html" | |
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803
355632dca928
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parents:
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228 ACCESSKEY="U" |
| 0 | 229 >Up</A |
| 230 ></TD | |
| 231 ><TD | |
| 232 WIDTH="33%" | |
| 233 ALIGN="right" | |
| 234 VALIGN="top" | |
| 235 >SDL_mutexV</TD | |
| 236 ></TR | |
| 237 ></TABLE | |
| 238 ></DIV | |
| 239 ></BODY | |
| 240 ></HTML | |
| 241 > |