Mercurial > sdl-ios-xcode
annotate docs/html/sdldestroysemaphore.html @ 2992:dbff5769d742
The core pointer is comprised of merging the inputs of all mice.
If there are other mice, they should show up in the device list, and
we want to report events from those devices instead of the core events.
However, if XInput isn't supported or we can't find other mice in the
device list, we'll add the core pointer and interpret normal mouse events.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 04 Jan 2009 18:29:20 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 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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parents:
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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 > |