Mercurial > sdl-ios-xcode
annotate docs/html/sdlmutexp.html @ 641:df178851293b
Date: 28 Jun 2003 22:42:52 +0100
From: Alan Swanson
Subject: Re: [SDL] New XFree 4.3 Video Mode Patch
I have a wee amendment that moves the qsort in set_best_resolution
to only occur after failing to find an exact match only. This would
make absolutely sure we get a user set mode.
While I've never had any problems for my normal resolutions (1280x1024,
1024x768, 800x600 & 640,480) while closely examining the output from
qsort I've noticed it doesn't seem to sort the modes fully. These is
one definite wrong at 1152x768 and a few that just look wrong to me.
From a program (attached) I made to examine this more easily. X has
sorted its mode list using the same method as ours (plus frequency),
and our user modes get inserted without any other movement.
On the patch I've made I've also changed cmpmodes to sort on vertical
resolution and then horizontal. Ie vertical is now most significant
bit.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 28 Jun 2003 21:52:26 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| 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 1.64 |
| 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 | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
| 47 HREF="sdldestroymutex.html" | |
| 48 >Prev</A | |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 ></TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="sdlmutexv.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><H1 | |
| 69 ><A | |
| 70 NAME="SDLMUTEXP" | |
| 71 >SDL_mutexP</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
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76 NAME="AEN7484" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_mutexP -- Lock a mutex</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
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84 NAME="AEN7487" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
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91 NAME="AEN7488" |
| 0 | 92 ></A |
| 93 ><P | |
| 94 ></P | |
| 95 ><PRE | |
| 96 CLASS="FUNCSYNOPSISINFO" | |
| 97 >#include "SDL.h" | |
| 98 #include "SDL_thread.h"</PRE | |
| 99 ><P | |
| 100 ><CODE | |
| 101 ><CODE | |
| 102 CLASS="FUNCDEF" | |
| 103 >int <B | |
| 104 CLASS="FSFUNC" | |
| 105 >SDL_mutexP</B | |
| 106 ></CODE | |
| 107 >(SDL_mutex *mutex);</CODE | |
| 108 ></P | |
| 109 ><P | |
| 110 ></P | |
| 111 ></DIV | |
| 112 ></DIV | |
| 113 ><DIV | |
| 114 CLASS="REFSECT1" | |
| 115 ><A | |
|
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116 NAME="AEN7494" |
| 0 | 117 ></A |
| 118 ><H2 | |
| 119 >Description</H2 | |
| 120 ><P | |
| 121 >Locks the <TT | |
| 122 CLASS="PARAMETER" | |
| 123 ><I | |
| 124 >mutex</I | |
| 125 ></TT | |
| 126 >, which was previously created with <A | |
| 127 HREF="sdlcreatemutex.html" | |
| 128 ><TT | |
| 129 CLASS="FUNCTION" | |
| 130 >SDL_CreateMutex</TT | |
| 131 ></A | |
| 132 >. If the mutex is already locked then <TT | |
| 133 CLASS="FUNCTION" | |
| 134 >SDL_mutexP</TT | |
| 135 > will not return until it is <A | |
| 136 HREF="sdlmutexv.html" | |
| 137 >unlocked</A | |
| 138 >. Returns <SPAN | |
| 139 CLASS="RETURNVALUE" | |
| 140 >0</SPAN | |
| 141 > on success, or <SPAN | |
| 142 CLASS="RETURNVALUE" | |
| 143 >-1</SPAN | |
| 144 > on an error.</P | |
| 145 ><P | |
| 146 >SDL also defines a macro <TT | |
| 147 CLASS="LITERAL" | |
| 148 >#define SDL_LockMutex(m) SDL_mutexP(m)</TT | |
| 149 >.</P | |
| 150 ></DIV | |
| 151 ><DIV | |
| 152 CLASS="REFSECT1" | |
| 153 ><A | |
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154 NAME="AEN7506" |
| 0 | 155 ></A |
| 156 ><H2 | |
| 157 >See Also</H2 | |
| 158 ><P | |
| 159 ><A | |
| 160 HREF="sdlcreatemutex.html" | |
| 161 ><TT | |
| 162 CLASS="FUNCTION" | |
| 163 >SDL_CreateMutex</TT | |
| 164 ></A | |
| 165 >, | |
| 166 <A | |
| 167 HREF="sdlmutexv.html" | |
| 168 ><TT | |
| 169 CLASS="FUNCTION" | |
| 170 >SDL_mutexV</TT | |
| 171 ></A | |
| 172 ></P | |
| 173 ></DIV | |
| 174 ><DIV | |
| 175 CLASS="NAVFOOTER" | |
| 176 ><HR | |
| 177 ALIGN="LEFT" | |
| 178 WIDTH="100%"><TABLE | |
| 179 WIDTH="100%" | |
| 180 BORDER="0" | |
| 181 CELLPADDING="0" | |
| 182 CELLSPACING="0" | |
| 183 ><TR | |
| 184 ><TD | |
| 185 WIDTH="33%" | |
| 186 ALIGN="left" | |
| 187 VALIGN="top" | |
| 188 ><A | |
| 189 HREF="sdldestroymutex.html" | |
| 190 >Prev</A | |
| 191 ></TD | |
| 192 ><TD | |
| 193 WIDTH="34%" | |
| 194 ALIGN="center" | |
| 195 VALIGN="top" | |
| 196 ><A | |
| 197 HREF="index.html" | |
| 198 >Home</A | |
| 199 ></TD | |
| 200 ><TD | |
| 201 WIDTH="33%" | |
| 202 ALIGN="right" | |
| 203 VALIGN="top" | |
| 204 ><A | |
| 205 HREF="sdlmutexv.html" | |
| 206 >Next</A | |
| 207 ></TD | |
| 208 ></TR | |
| 209 ><TR | |
| 210 ><TD | |
| 211 WIDTH="33%" | |
| 212 ALIGN="left" | |
| 213 VALIGN="top" | |
| 214 >SDL_DestroyMutex</TD | |
| 215 ><TD | |
| 216 WIDTH="34%" | |
| 217 ALIGN="center" | |
| 218 VALIGN="top" | |
| 219 ><A | |
| 220 HREF="thread.html" | |
| 221 >Up</A | |
| 222 ></TD | |
| 223 ><TD | |
| 224 WIDTH="33%" | |
| 225 ALIGN="right" | |
| 226 VALIGN="top" | |
| 227 >SDL_mutexV</TD | |
| 228 ></TR | |
| 229 ></TABLE | |
| 230 ></DIV | |
| 231 ></BODY | |
| 232 ></HTML | |
| 233 > |