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annotate data-provider.c @ 144:be87c8e78266

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Code cleanup
author Daniele Nicolodi <daniele.nicolodi@obspm.fr>
date Wed, 22 Jan 2014 14:45:24 +0100
parents
children 97112b45b838
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144
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Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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1 #include <ansi_c.h>
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2 #include <userint.h>
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3
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4 /* message buffer */
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5 #define DATA_PROVIDER_MSGLEN 256
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6 #define DATA_PROVIDER_MSGNUM 16
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7 static char messages[DATA_PROVIDER_MSGLEN][DATA_PROVIDER_MSGNUM];
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8 static unsigned int messageid = 0;
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9
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10 /* logging function defined in main program */
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11 extern void logmsg(const char *frmt, ...);
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12
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13 /* message callback */
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14 void CVICALLBACK MessageCB (void *msg)
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15 {
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16 if (msg != NULL)
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17 logmsg(msg);
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18 }
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19
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20 void SendMessage(int threadId, const char *frmt, ...)
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21 {
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22 /* message buffer */
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23 char *message = messages[messageid++ % DATA_PROVIDER_MSGNUM];
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24
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25 /* format message */
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26 va_list args;
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27 va_start(args, frmt);
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28 vsnprintf(message, DATA_PROVIDER_MSGLEN - 1, frmt, args);
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29 va_end(args);
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30
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31 /* signal main thread */
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32 PostDeferredCallToThread(MessageCB, message, threadId);
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33 }
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