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annotate libcore/core/trace.c @ 216:33ddbe30440e

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rpg: improve collisions
author David Demelier <markand@malikania.fr>
date Wed, 18 Nov 2020 10:03:27 +0100
parents aab824406d3d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * trace.h -- non-fatal message logs
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3 *
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4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20 #include <stdio.h>
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21
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22 #include "trace.h"
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23
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24 static void
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25 default_handler(const char *line)
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26 {
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27 assert(line);
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28
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29 puts(line);
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30 }
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31
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32 void (*trace_handler)(const char *) = default_handler;
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33
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34 void
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35 tracef(const char *fmt, ...)
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36 {
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37 assert(fmt);
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38
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39 va_list ap;
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40
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41 if (!trace_handler)
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42 return;
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43
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44 va_start(ap, fmt);
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45 vtracef(fmt, ap);
141
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46 va_end(ap);
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47 }
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48
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49 void
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50 vtracef(const char *fmt, va_list ap)
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51 {
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52 assert(fmt);
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53
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54 char buf[TRACE_LINE_MAX];
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55
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56 if (!trace_handler)
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57 return;
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58
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59 vsnprintf(buf, sizeof (buf), fmt, ap);
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60 trace_handler(buf);
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61 }