Mercurial > sdl-ios-xcode
annotate docs/html/sdlmutexv.html @ 809:dba98fb391e7
Date: Tue, 13 Jan 2004 19:25:37 +0300
From: Dmitry Yakimov
Subject: [SDL] [PATCH] SDL bug patch
Let me introduce 2 fixes to SDL.
1. Preventing great slowdown on fast machines while hardware
flipping (it's obviously bug).
2. Setting up 85 Hz of monitor if supported. The reason is that
Win98 by default sets lowest frequency 60 Hz.
And we can't set up maximum frequency because some users can have
wrong monitor drivers.
This is important for shareware and commercial programs.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 11 Feb 2004 16:10:16 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_mutexV</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_mutexP" | |
17 HREF="sdlmutexp.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_CreateSemaphore" | |
20 HREF="sdlcreatesemaphore.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="sdlmutexp.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="sdlcreatesemaphore.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="SDLMUTEXV" | |
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74 ></A |
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75 >SDL_mutexV</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN7905" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_mutexV -- Unlock a mutex</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN7908" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN7909" |
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_mutexV</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="AEN7915" |
0 | 120 ></A |
121 ><H2 | |
122 >Description</H2 | |
123 ><P | |
124 >Unlocks 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 >. Returns <SPAN | |
136 CLASS="RETURNVALUE" | |
137 >0</SPAN | |
138 > on success, or <SPAN | |
139 CLASS="RETURNVALUE" | |
140 >-1</SPAN | |
141 > on an error.</P | |
142 ><P | |
143 >SDL also defines a macro <TT | |
144 CLASS="LITERAL" | |
145 >#define SDL_UnlockMutex(m) SDL_mutexV(m)</TT | |
146 >.</P | |
147 ></DIV | |
148 ><DIV | |
149 CLASS="REFSECT1" | |
150 ><A | |
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151 NAME="AEN7925" |
0 | 152 ></A |
153 ><H2 | |
154 >See Also</H2 | |
155 ><P | |
156 ><A | |
157 HREF="sdlcreatemutex.html" | |
158 ><TT | |
159 CLASS="FUNCTION" | |
160 >SDL_CreateMutex</TT | |
161 ></A | |
162 >, | |
163 <A | |
164 HREF="sdlmutexp.html" | |
165 ><TT | |
166 CLASS="FUNCTION" | |
167 >SDL_mutexP</TT | |
168 ></A | |
169 ></P | |
170 ></DIV | |
171 ><DIV | |
172 CLASS="NAVFOOTER" | |
173 ><HR | |
174 ALIGN="LEFT" | |
175 WIDTH="100%"><TABLE | |
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176 SUMMARY="Footer navigation table" |
0 | 177 WIDTH="100%" |
178 BORDER="0" | |
179 CELLPADDING="0" | |
180 CELLSPACING="0" | |
181 ><TR | |
182 ><TD | |
183 WIDTH="33%" | |
184 ALIGN="left" | |
185 VALIGN="top" | |
186 ><A | |
187 HREF="sdlmutexp.html" | |
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188 ACCESSKEY="P" |
0 | 189 >Prev</A |
190 ></TD | |
191 ><TD | |
192 WIDTH="34%" | |
193 ALIGN="center" | |
194 VALIGN="top" | |
195 ><A | |
196 HREF="index.html" | |
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197 ACCESSKEY="H" |
0 | 198 >Home</A |
199 ></TD | |
200 ><TD | |
201 WIDTH="33%" | |
202 ALIGN="right" | |
203 VALIGN="top" | |
204 ><A | |
205 HREF="sdlcreatesemaphore.html" | |
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206 ACCESSKEY="N" |
0 | 207 >Next</A |
208 ></TD | |
209 ></TR | |
210 ><TR | |
211 ><TD | |
212 WIDTH="33%" | |
213 ALIGN="left" | |
214 VALIGN="top" | |
215 >SDL_mutexP</TD | |
216 ><TD | |
217 WIDTH="34%" | |
218 ALIGN="center" | |
219 VALIGN="top" | |
220 ><A | |
221 HREF="thread.html" | |
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222 ACCESSKEY="U" |
0 | 223 >Up</A |
224 ></TD | |
225 ><TD | |
226 WIDTH="33%" | |
227 ALIGN="right" | |
228 VALIGN="top" | |
229 >SDL_CreateSemaphore</TD | |
230 ></TR | |
231 ></TABLE | |
232 ></DIV | |
233 ></BODY | |
234 ></HTML | |
235 > |