Mercurial > sdl-ios-xcode
annotate docs/html/sdlmutexp.html @ 1795:398ac0f88e4d
Fixed bug #220
The AltiVec blitters don't compile, since they require __VEC__ to be enabled in
order for the compiler to understand "vector" and friends (i.e. do AltiVec)
But you don't want to turn AltiVec on globally, since then the code would only
run on a G4 (there are already runtime tests, before using the AltiVec
variants)
The solution here is to enable AltiVec locally, for the actual AltiVec code.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 09 May 2006 15:09:47 +0000 |
parents | 355632dca928 |
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rev | line source |
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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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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 > |