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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
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children 55f1f1b3e27d
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-1:000000000000 0:74212992fb08
1 <HTML
2 ><HEAD
3 ><TITLE
4 >SDL_SemValue</TITLE
5 ><META
6 NAME="GENERATOR"
7 CONTENT="Modular DocBook HTML Stylesheet Version 1.61
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_SemPost"
17 HREF="sdlsempost.html"><LINK
18 REL="NEXT"
19 TITLE="SDL_CreateCond"
20 HREF="sdlcreatecond.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
31 WIDTH="100%"
32 BORDER="0"
33 CELLPADDING="0"
34 CELLSPACING="0"
35 ><TR
36 ><TH
37 COLSPAN="3"
38 ALIGN="center"
39 >SDL Library Documentation</TH
40 ></TR
41 ><TR
42 ><TD
43 WIDTH="10%"
44 ALIGN="left"
45 VALIGN="bottom"
46 ><A
47 HREF="sdlsempost.html"
48 >Prev</A
49 ></TD
50 ><TD
51 WIDTH="80%"
52 ALIGN="center"
53 VALIGN="bottom"
54 ></TD
55 ><TD
56 WIDTH="10%"
57 ALIGN="right"
58 VALIGN="bottom"
59 ><A
60 HREF="sdlcreatecond.html"
61 >Next</A
62 ></TD
63 ></TR
64 ></TABLE
65 ><HR
66 ALIGN="LEFT"
67 WIDTH="100%"></DIV
68 ><H1
69 ><A
70 NAME="SDLSEMVALUE"
71 >SDL_SemValue</A
72 ></H1
73 ><DIV
74 CLASS="REFNAMEDIV"
75 ><A
76 NAME="AEN7593"
77 ></A
78 ><H2
79 >Name</H2
80 >SDL_SemValue&nbsp;--&nbsp;Return the current value of a semaphore.</DIV
81 ><DIV
82 CLASS="REFSYNOPSISDIV"
83 ><A
84 NAME="AEN7596"
85 ></A
86 ><H2
87 >Synopsis</H2
88 ><DIV
89 CLASS="FUNCSYNOPSIS"
90 ><A
91 NAME="AEN7597"
92 ></A
93 ><P
94 ></P
95 ><PRE
96 CLASS="FUNCSYNOPSISINFO"
97 >#include "SDL.h"
98 #include "SDL/SDL_thread.h"</PRE
99 ><P
100 ><CODE
101 ><CODE
102 CLASS="FUNCDEF"
103 >Uint32 <B
104 CLASS="FSFUNC"
105 >SDL_SemValue</B
106 ></CODE
107 >(SDL_sem *sem);</CODE
108 ></P
109 ><P
110 ></P
111 ></DIV
112 ></DIV
113 ><DIV
114 CLASS="REFSECT1"
115 ><A
116 NAME="AEN7603"
117 ></A
118 ><H2
119 >Description</H2
120 ><P
121 ><TT
122 CLASS="FUNCTION"
123 >SDL_SemValue()</TT
124 > returns the current semaphore value from
125 the semaphore pointed to by <TT
126 CLASS="PARAMETER"
127 ><I
128 >sem</I
129 ></TT
130 >.</P
131 ></DIV
132 ><DIV
133 CLASS="REFSECT1"
134 ><A
135 NAME="AEN7608"
136 ></A
137 ><H2
138 >Return Value</H2
139 ><P
140 >Returns current value of the semaphore.</P
141 ></DIV
142 ><DIV
143 CLASS="REFSECT1"
144 ><A
145 NAME="AEN7611"
146 ></A
147 ><H2
148 >Examples</H2
149 ><P
150 ><PRE
151 CLASS="PROGRAMLISTING"
152 > sem_value = SDL_SemValue(my_sem);</PRE
153 ></P
154 ></DIV
155 ><DIV
156 CLASS="REFSECT1"
157 ><A
158 NAME="AEN7615"
159 ></A
160 ><H2
161 >See Also</H2
162 ><P
163 ><A
164 HREF="sdlcreatesemaphore.html"
165 ><TT
166 CLASS="FUNCTION"
167 >SDL_CreateSemaphore</TT
168 ></A
169 >,
170 <A
171 HREF="sdldestroysemaphore.html"
172 ><TT
173 CLASS="FUNCTION"
174 >SDL_DestroySemaphore</TT
175 ></A
176 >,
177 <A
178 HREF="sdlsemwait.html"
179 ><TT
180 CLASS="FUNCTION"
181 >SDL_SemWait</TT
182 ></A
183 >,
184 <A
185 HREF="sdlsemtrywait.html"
186 ><TT
187 CLASS="FUNCTION"
188 >SDL_SemTryWait</TT
189 ></A
190 >,
191 <A
192 HREF="sdlsemwaittimeout.html"
193 ><TT
194 CLASS="FUNCTION"
195 >SDL_SemWaitTimeout</TT
196 ></A
197 >,
198 <A
199 HREF="sdlsempost.html"
200 ><TT
201 CLASS="FUNCTION"
202 >SDL_SemPost</TT
203 ></A
204 ></P
205 ></DIV
206 ><DIV
207 CLASS="NAVFOOTER"
208 ><HR
209 ALIGN="LEFT"
210 WIDTH="100%"><TABLE
211 WIDTH="100%"
212 BORDER="0"
213 CELLPADDING="0"
214 CELLSPACING="0"
215 ><TR
216 ><TD
217 WIDTH="33%"
218 ALIGN="left"
219 VALIGN="top"
220 ><A
221 HREF="sdlsempost.html"
222 >Prev</A
223 ></TD
224 ><TD
225 WIDTH="34%"
226 ALIGN="center"
227 VALIGN="top"
228 ><A
229 HREF="index.html"
230 >Home</A
231 ></TD
232 ><TD
233 WIDTH="33%"
234 ALIGN="right"
235 VALIGN="top"
236 ><A
237 HREF="sdlcreatecond.html"
238 >Next</A
239 ></TD
240 ></TR
241 ><TR
242 ><TD
243 WIDTH="33%"
244 ALIGN="left"
245 VALIGN="top"
246 >SDL_SemPost</TD
247 ><TD
248 WIDTH="34%"
249 ALIGN="center"
250 VALIGN="top"
251 ><A
252 HREF="thread.html"
253 >Up</A
254 ></TD
255 ><TD
256 WIDTH="33%"
257 ALIGN="right"
258 VALIGN="top"
259 >SDL_CreateCond</TD
260 ></TR
261 ></TABLE
262 ></DIV
263 ></BODY
264 ></HTML
265 >