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annotate docs/html/sdldestroysemaphore.html @ 2495:66c02abeef0e gsoc2008_force_feedback
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author | Edgar Simo <bobbens@gmail.com> |
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date | Thu, 03 Jul 2008 09:58:27 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_DestroySemaphore</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_CreateSemaphore" | |
17 HREF="sdlcreatesemaphore.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_SemWait" | |
20 HREF="sdlsemwait.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="sdlcreatesemaphore.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="sdlsemwait.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="SDLDESTROYSEMAPHORE" | |
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74 ></A |
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75 >SDL_DestroySemaphore</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN7982" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_DestroySemaphore -- Destroys a semaphore that was created by <A | |
84 HREF="sdlcreatesemaphore.html" | |
85 >SDL_CreateSemaphore</A | |
86 >.</DIV | |
87 ><DIV | |
88 CLASS="REFSYNOPSISDIV" | |
89 ><A | |
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90 NAME="AEN7986" |
0 | 91 ></A |
92 ><H2 | |
93 >Synopsis</H2 | |
94 ><DIV | |
95 CLASS="FUNCSYNOPSIS" | |
96 ><A | |
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97 NAME="AEN7987" |
0 | 98 ></A |
99 ><P | |
100 ></P | |
101 ><PRE | |
102 CLASS="FUNCSYNOPSISINFO" | |
103 >#include "SDL.h" | |
104 #include "SDL_thread.h"</PRE | |
105 ><P | |
106 ><CODE | |
107 ><CODE | |
108 CLASS="FUNCDEF" | |
109 >void <B | |
110 CLASS="FSFUNC" | |
111 >SDL_DestroySemaphore</B | |
112 ></CODE | |
113 >(SDL_sem *sem);</CODE | |
114 ></P | |
115 ><P | |
116 ></P | |
117 ></DIV | |
118 ></DIV | |
119 ><DIV | |
120 CLASS="REFSECT1" | |
121 ><A | |
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122 NAME="AEN7993" |
0 | 123 ></A |
124 ><H2 | |
125 >Description</H2 | |
126 ><P | |
127 ><TT | |
128 CLASS="FUNCTION" | |
129 >SDL_DestroySemaphore</TT | |
130 > destroys the semaphore pointed to | |
131 by <TT | |
132 CLASS="PARAMETER" | |
133 ><I | |
134 >sem</I | |
135 ></TT | |
136 > that was created by | |
137 <A | |
138 HREF="sdlcreatesemaphore.html" | |
139 ><TT | |
140 CLASS="FUNCTION" | |
141 >SDL_CreateSemaphore</TT | |
142 ></A | |
143 >. | |
144 It is not safe to destroy a semaphore if there are threads currently blocked | |
145 waiting on it.</P | |
146 ></DIV | |
147 ><DIV | |
148 CLASS="REFSECT1" | |
149 ><A | |
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150 NAME="AEN8000" |
0 | 151 ></A |
152 ><H2 | |
153 >Examples</H2 | |
154 ><P | |
155 ><PRE | |
156 CLASS="PROGRAMLISTING" | |
157 >if (my_sem != NULL) { | |
158 SDL_DestroySemaphore(my_sem); | |
159 my_sem = NULL; | |
160 }</PRE | |
161 ></P | |
162 ></DIV | |
163 ><DIV | |
164 CLASS="REFSECT1" | |
165 ><A | |
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166 NAME="AEN8004" |
0 | 167 ></A |
168 ><H2 | |
169 >See Also</H2 | |
170 ><P | |
171 ><A | |
172 HREF="sdlcreatesemaphore.html" | |
173 ><TT | |
174 CLASS="FUNCTION" | |
175 >SDL_CreateSemaphore</TT | |
176 ></A | |
177 >, | |
178 <A | |
179 HREF="sdlsemwait.html" | |
180 ><TT | |
181 CLASS="FUNCTION" | |
182 >SDL_SemWait</TT | |
183 ></A | |
184 >, | |
185 <A | |
186 HREF="sdlsemtrywait.html" | |
187 ><TT | |
188 CLASS="FUNCTION" | |
189 >SDL_SemTryWait</TT | |
190 ></A | |
191 >, | |
192 <A | |
193 HREF="sdlsemwaittimeout.html" | |
194 ><TT | |
195 CLASS="FUNCTION" | |
196 >SDL_SemWaitTimeout</TT | |
197 ></A | |
198 >, | |
199 <A | |
200 HREF="sdlsempost.html" | |
201 ><TT | |
202 CLASS="FUNCTION" | |
203 >SDL_SemPost</TT | |
204 ></A | |
205 >, | |
206 <A | |
207 HREF="sdlsemvalue.html" | |
208 ><TT | |
209 CLASS="FUNCTION" | |
210 >SDL_SemValue</TT | |
211 ></A | |
212 ></P | |
213 ></DIV | |
214 ><DIV | |
215 CLASS="NAVFOOTER" | |
216 ><HR | |
217 ALIGN="LEFT" | |
218 WIDTH="100%"><TABLE | |
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219 SUMMARY="Footer navigation table" |
0 | 220 WIDTH="100%" |
221 BORDER="0" | |
222 CELLPADDING="0" | |
223 CELLSPACING="0" | |
224 ><TR | |
225 ><TD | |
226 WIDTH="33%" | |
227 ALIGN="left" | |
228 VALIGN="top" | |
229 ><A | |
230 HREF="sdlcreatesemaphore.html" | |
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231 ACCESSKEY="P" |
0 | 232 >Prev</A |
233 ></TD | |
234 ><TD | |
235 WIDTH="34%" | |
236 ALIGN="center" | |
237 VALIGN="top" | |
238 ><A | |
239 HREF="index.html" | |
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240 ACCESSKEY="H" |
0 | 241 >Home</A |
242 ></TD | |
243 ><TD | |
244 WIDTH="33%" | |
245 ALIGN="right" | |
246 VALIGN="top" | |
247 ><A | |
248 HREF="sdlsemwait.html" | |
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249 ACCESSKEY="N" |
0 | 250 >Next</A |
251 ></TD | |
252 ></TR | |
253 ><TR | |
254 ><TD | |
255 WIDTH="33%" | |
256 ALIGN="left" | |
257 VALIGN="top" | |
258 >SDL_CreateSemaphore</TD | |
259 ><TD | |
260 WIDTH="34%" | |
261 ALIGN="center" | |
262 VALIGN="top" | |
263 ><A | |
264 HREF="thread.html" | |
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265 ACCESSKEY="U" |
0 | 266 >Up</A |
267 ></TD | |
268 ><TD | |
269 WIDTH="33%" | |
270 ALIGN="right" | |
271 VALIGN="top" | |
272 >SDL_SemWait</TD | |
273 ></TR | |
274 ></TABLE | |
275 ></DIV | |
276 ></BODY | |
277 ></HTML | |
278 > |