Mercurial > sdl-ios-xcode
annotate docs/html/sdlquit.html @ 1157:baf35853ad54
Date: Mon, 10 Oct 2005 13:09:32 +0300
From: Tommi Kyntola <tommi.kyntola@ray.fi>
To: sdl@libsdl.org
Subject: [SDL] [RFC] get_ticks broken on linux
It uses gettimeofday to calculate the timedifference.
Gettimeofday returns current time which is seldom monotonous.
This breaks SDL timer subsystem. (time callbacks and all that
get borked when the time difference ms is suddenly ~ 2^32)
I posted a message about this earlier but got no response.
Some thoughts on this matter would be appreciated.
(Or even an explanation for the lack of interest.)
A patch below would use the posix timers that have been around
since posix 93 and do provide a good source of monotonous time
on linux boxes (and on few others too).
The following patch is also availabe at:
http://www.hut.fi/u/tkyntola/SDL-1.2.9-clockfix.patch
It's against 1.2.9, but I can easily rediffit against
the cvs branch is needed.
cheers,
Tommi Kyntola tommi.kyntola@ray.fi
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 11 Oct 2005 18:16:12 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_Quit</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="General" | |
| 14 HREF="general.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_QuitSubSystem" | |
| 17 HREF="sdlquitsubsystem.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_WasInit" | |
| 20 HREF="sdlwasinit.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="sdlquitsubsystem.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="sdlwasinit.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="SDLQUIT" | |
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74 ></A |
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75 >SDL_Quit</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN585" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_Quit -- Shut down SDL</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN588" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN589" |
| 0 | 95 ></A |
| 96 ><P | |
| 97 ></P | |
| 98 ><PRE | |
| 99 CLASS="FUNCSYNOPSISINFO" | |
| 100 >#include "SDL.h"</PRE | |
| 101 ><P | |
| 102 ><CODE | |
| 103 ><CODE | |
| 104 CLASS="FUNCDEF" | |
| 105 >void <B | |
| 106 CLASS="FSFUNC" | |
| 107 >SDL_Quit</B | |
| 108 ></CODE | |
| 109 >(void);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
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118 NAME="AEN595" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 ><TT | |
| 124 CLASS="FUNCTION" | |
| 125 >SDL_Quit</TT | |
| 126 > shuts down all SDL subsystems and frees the resources allocated to them. This should always be called before you exit. For the sake of simplicity you can set <TT | |
| 127 CLASS="FUNCTION" | |
| 128 >SDL_Quit</TT | |
| 129 > as your <TT | |
| 130 CLASS="FUNCTION" | |
| 131 >atexit</TT | |
| 132 > call, like: | |
| 133 <PRE | |
| 134 CLASS="PROGRAMLISTING" | |
| 135 >SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO); | |
| 136 atexit(SDL_Quit); | |
| 137 . | |
| 138 .</PRE | |
| 139 ></P | |
| 140 ><DIV | |
| 141 CLASS="NOTE" | |
| 142 ><BLOCKQUOTE | |
| 143 CLASS="NOTE" | |
| 144 ><P | |
| 145 ><B | |
| 146 >Note: </B | |
| 147 >While using <TT | |
| 148 CLASS="FUNCTION" | |
| 149 >atexit</TT | |
| 150 > maybe be fine for small programs, more advanced users should shut down SDL in their own cleanup code. Plus, using <TT | |
| 151 CLASS="FUNCTION" | |
| 152 >atexit</TT | |
| 153 > in a library is a sure way to crash dynamically loaded code</P | |
| 154 ></BLOCKQUOTE | |
| 155 ></DIV | |
| 156 ></DIV | |
| 157 ><DIV | |
| 158 CLASS="REFSECT1" | |
| 159 ><A | |
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160 NAME="AEN606" |
| 0 | 161 ></A |
| 162 ><H2 | |
| 163 >See Also</H2 | |
| 164 ><P | |
| 165 ><A | |
| 166 HREF="sdlquitsubsystem.html" | |
| 167 ><TT | |
| 168 CLASS="FUNCTION" | |
| 169 >SDL_QuitSubsystem</TT | |
| 170 ></A | |
| 171 >, | |
| 172 <A | |
| 173 HREF="sdlinit.html" | |
| 174 ><TT | |
| 175 CLASS="FUNCTION" | |
| 176 >SDL_Init</TT | |
| 177 ></A | |
| 178 ></P | |
| 179 ></DIV | |
| 180 ><DIV | |
| 181 CLASS="NAVFOOTER" | |
| 182 ><HR | |
| 183 ALIGN="LEFT" | |
| 184 WIDTH="100%"><TABLE | |
|
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185 SUMMARY="Footer navigation table" |
| 0 | 186 WIDTH="100%" |
| 187 BORDER="0" | |
| 188 CELLPADDING="0" | |
| 189 CELLSPACING="0" | |
| 190 ><TR | |
| 191 ><TD | |
| 192 WIDTH="33%" | |
| 193 ALIGN="left" | |
| 194 VALIGN="top" | |
| 195 ><A | |
| 196 HREF="sdlquitsubsystem.html" | |
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355632dca928
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parents:
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197 ACCESSKEY="P" |
| 0 | 198 >Prev</A |
| 199 ></TD | |
| 200 ><TD | |
| 201 WIDTH="34%" | |
| 202 ALIGN="center" | |
| 203 VALIGN="top" | |
| 204 ><A | |
| 205 HREF="index.html" | |
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355632dca928
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parents:
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206 ACCESSKEY="H" |
| 0 | 207 >Home</A |
| 208 ></TD | |
| 209 ><TD | |
| 210 WIDTH="33%" | |
| 211 ALIGN="right" | |
| 212 VALIGN="top" | |
| 213 ><A | |
| 214 HREF="sdlwasinit.html" | |
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355632dca928
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parents:
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215 ACCESSKEY="N" |
| 0 | 216 >Next</A |
| 217 ></TD | |
| 218 ></TR | |
| 219 ><TR | |
| 220 ><TD | |
| 221 WIDTH="33%" | |
| 222 ALIGN="left" | |
| 223 VALIGN="top" | |
| 224 >SDL_QuitSubSystem</TD | |
| 225 ><TD | |
| 226 WIDTH="34%" | |
| 227 ALIGN="center" | |
| 228 VALIGN="top" | |
| 229 ><A | |
| 230 HREF="general.html" | |
|
803
355632dca928
Updated SDL HTML documentation
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parents:
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231 ACCESSKEY="U" |
| 0 | 232 >Up</A |
| 233 ></TD | |
| 234 ><TD | |
| 235 WIDTH="33%" | |
| 236 ALIGN="right" | |
| 237 VALIGN="top" | |
| 238 >SDL_WasInit</TD | |
| 239 ></TR | |
| 240 ></TABLE | |
| 241 ></DIV | |
| 242 ></BODY | |
| 243 ></HTML | |
| 244 > |