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annotate docs/html/sdlsemwaittimeout.html @ 1133:609c060fd2a2
The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails:
To: SDL Developers <sdl@libsdl.org>
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Date: Mon, 30 May 2005 23:29:04 +0200
Subject: [SDL] Mac OS X Video Drivers [patch]
I've updated/added the Carbon and X11 video drivers
to the Mac OS X port of SDL 1.2 (the CVS version),
and made the Cocoa driver and runtime *optional*.
The default is still Cocoa, and the "Quartz" driver.
But you can now also use "toolbox" for Carbon, and
"x11" for running with Apple's (or other) X11 server:
export SDL_VIDEODRIVER=x11
export SDL_VIDEO_GL_DRIVER=/usr/X11R6/lib/libGL.dylib
It also checks if the frameworks are available, by a:
#include <Carbon/Carbon.h> or #import <Cocoa/Cocoa.h>
(this should make it configure on plain Darwin as well?)
Here are the new configure targets:
--enable-video-cocoa use Cocoa/Quartz video driver default=yes
--enable-video-carbon use Carbon/QuickDraw video driver default=yes
--enable-video-x11 use X11 video driver default=no
./configure --enable-video-cocoa --enable-video-carbon
--enable-video-x11 \
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
The Carbon version is just an updated version of the old
SDL driver for Mac OS 9, and could probably be improved...
(but it does work, including the Carbon version of SDLmain)
If you disable cocoa, you can run with -framework Carbon only,
and the C version of SDL_main.c. And if you disable carbon too,
you can still use the X11 version which doesn't require SDLmain.
I updated the DrawSprocket version, but did not include it.
(no blitters or VRAM GWorlds etc. available on OS X anyway)
Besides for Mac OS 9, I don't think there's any use for it ?
And note that any performance on Mac OS X equals OpenGL anyway...
You can get "fair" software SDL results on captured CG displays,
but for decent frame rates you need to be using GL for rendering.
Finally, here is the patch itself:
http://www.algonet.se/~afb/SDL-12CVS-macvideo.patch
--anders
PS. It says "video", but as usual it applies to mouse/keyboard too.
------
To: A list for developers using the SDL library <sdl@libsdl.org>
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Date: Sun, 4 Sep 2005 10:02:15 +0200
Subject: [SDL] Updated Mac patch
Updated the previous Mac patch to disable Carbon by default.
Also "fixed" the SDL.spec again, so that it builds on Darwin.
http://www.algonet.se/~afb/SDL-1.2.9-mac.patch
Also applied fine to SDL12 CVS, when I tried it.
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Thu, 08 Sep 2005 06:16:14 +0000 |
parents | 355632dca928 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_SemWaitTimeout</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_SemTryWait" | |
17 HREF="sdlsemtrywait.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_SemPost" | |
20 HREF="sdlsempost.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="sdlsemtrywait.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="sdlsempost.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="SDLSEMWAITTIMEOUT" | |
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74 ></A |
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75 >SDL_SemWaitTimeout</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN8120" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_SemWaitTimeout -- Lock a semaphore, but only wait up to a specified maximum time.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN8123" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN8124" |
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_SemWaitTimeout</B | |
109 ></CODE | |
110 >(SDL_sem *sem, Uint32 timeout);</CODE | |
111 ></P | |
112 ><P | |
113 ></P | |
114 ></DIV | |
115 ></DIV | |
116 ><DIV | |
117 CLASS="REFSECT1" | |
118 ><A | |
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119 NAME="AEN8130" |
0 | 120 ></A |
121 ><H2 | |
122 >Description</H2 | |
123 ><P | |
124 ><TT | |
125 CLASS="FUNCTION" | |
126 >SDL_SemWaitTimeout()</TT | |
127 > is a varient of | |
128 <A | |
129 HREF="sdlsemwait.html" | |
130 >SDL_SemWait</A | |
131 > | |
132 with a maximum timeout value. | |
133 If the value of the semaphore pointed to by <TT | |
134 CLASS="PARAMETER" | |
135 ><I | |
136 >sem</I | |
137 ></TT | |
138 > is | |
139 positive (greater than zero) it will atomically decrement the semaphore value | |
140 and return 0, otherwise it will wait up to <TT | |
141 CLASS="PARAMETER" | |
142 ><I | |
143 >timeout</I | |
144 ></TT | |
145 > | |
146 milliseconds trying to lock the semaphore. This function is to be avoided if | |
147 possible since on some platforms it is implemented by polling the semaphore | |
148 every millisecond in a busy loop.</P | |
149 ><P | |
150 >After <TT | |
151 CLASS="FUNCTION" | |
152 >SDL_SemWaitTimeout()</TT | |
153 > is successful, the semaphore | |
154 can be released and its count atomically incremented by a successful call to | |
155 <A | |
156 HREF="sdlsempost.html" | |
157 >SDL_SemPost</A | |
158 >.</P | |
159 ></DIV | |
160 ><DIV | |
161 CLASS="REFSECT1" | |
162 ><A | |
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163 NAME="AEN8140" |
0 | 164 ></A |
165 ><H2 | |
166 >Return Value</H2 | |
167 ><P | |
168 >Returns <SPAN | |
169 CLASS="RETURNVALUE" | |
170 >0</SPAN | |
171 > if the semaphore was successfully locked or | |
172 either <SPAN | |
173 CLASS="RETURNVALUE" | |
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174 >SDL_MUTEX_TIMEDOUT</SPAN |
0 | 175 > or <SPAN |
176 CLASS="RETURNVALUE" | |
177 >-1</SPAN | |
178 > | |
179 if the timeout period was exceeded or there was an error, respectivly.</P | |
180 ><P | |
181 >If the semaphore was not successfully locked, the semaphore will be unchanged.</P | |
182 ></DIV | |
183 ><DIV | |
184 CLASS="REFSECT1" | |
185 ><A | |
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186 NAME="AEN8147" |
0 | 187 ></A |
188 ><H2 | |
189 >Examples</H2 | |
190 ><P | |
191 ><PRE | |
192 CLASS="PROGRAMLISTING" | |
193 >res = SDL_SemWaitTimeout(my_sem, WAIT_TIMEOUT_MILLISEC); | |
194 | |
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195 if (res == SDL_MUTEX_TIMEDOUT) { |
0 | 196 return TRY_AGAIN; |
197 } | |
198 if (res == -1) { | |
199 return WAIT_ERROR; | |
200 } | |
201 | |
202 ... | |
203 | |
204 SDL_SemPost(my_sem);</PRE | |
205 ></P | |
206 ></DIV | |
207 ><DIV | |
208 CLASS="REFSECT1" | |
209 ><A | |
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210 NAME="AEN8151" |
0 | 211 ></A |
212 ><H2 | |
213 >See Also</H2 | |
214 ><P | |
215 ><A | |
216 HREF="sdlcreatesemaphore.html" | |
217 ><TT | |
218 CLASS="FUNCTION" | |
219 >SDL_CreateSemaphore</TT | |
220 ></A | |
221 >, | |
222 <A | |
223 HREF="sdldestroysemaphore.html" | |
224 ><TT | |
225 CLASS="FUNCTION" | |
226 >SDL_DestroySemaphore</TT | |
227 ></A | |
228 >, | |
229 <A | |
230 HREF="sdlsemwait.html" | |
231 ><TT | |
232 CLASS="FUNCTION" | |
233 >SDL_SemWait</TT | |
234 ></A | |
235 >, | |
236 <A | |
237 HREF="sdlsemtrywait.html" | |
238 ><TT | |
239 CLASS="FUNCTION" | |
240 >SDL_SemTryWait</TT | |
241 ></A | |
242 >, | |
243 <A | |
244 HREF="sdlsempost.html" | |
245 ><TT | |
246 CLASS="FUNCTION" | |
247 >SDL_SemPost</TT | |
248 ></A | |
249 >, | |
250 <A | |
251 HREF="sdlsemvalue.html" | |
252 ><TT | |
253 CLASS="FUNCTION" | |
254 >SDL_SemValue</TT | |
255 ></A | |
256 ></P | |
257 ></DIV | |
258 ><DIV | |
259 CLASS="NAVFOOTER" | |
260 ><HR | |
261 ALIGN="LEFT" | |
262 WIDTH="100%"><TABLE | |
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263 SUMMARY="Footer navigation table" |
0 | 264 WIDTH="100%" |
265 BORDER="0" | |
266 CELLPADDING="0" | |
267 CELLSPACING="0" | |
268 ><TR | |
269 ><TD | |
270 WIDTH="33%" | |
271 ALIGN="left" | |
272 VALIGN="top" | |
273 ><A | |
274 HREF="sdlsemtrywait.html" | |
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275 ACCESSKEY="P" |
0 | 276 >Prev</A |
277 ></TD | |
278 ><TD | |
279 WIDTH="34%" | |
280 ALIGN="center" | |
281 VALIGN="top" | |
282 ><A | |
283 HREF="index.html" | |
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284 ACCESSKEY="H" |
0 | 285 >Home</A |
286 ></TD | |
287 ><TD | |
288 WIDTH="33%" | |
289 ALIGN="right" | |
290 VALIGN="top" | |
291 ><A | |
292 HREF="sdlsempost.html" | |
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293 ACCESSKEY="N" |
0 | 294 >Next</A |
295 ></TD | |
296 ></TR | |
297 ><TR | |
298 ><TD | |
299 WIDTH="33%" | |
300 ALIGN="left" | |
301 VALIGN="top" | |
302 >SDL_SemTryWait</TD | |
303 ><TD | |
304 WIDTH="34%" | |
305 ALIGN="center" | |
306 VALIGN="top" | |
307 ><A | |
308 HREF="thread.html" | |
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309 ACCESSKEY="U" |
0 | 310 >Up</A |
311 ></TD | |
312 ><TD | |
313 WIDTH="33%" | |
314 ALIGN="right" | |
315 VALIGN="top" | |
316 >SDL_SemPost</TD | |
317 ></TR | |
318 ></TABLE | |
319 ></DIV | |
320 ></BODY | |
321 ></HTML | |
322 > |