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annotate src/clock.h @ 32:91bc2329ab0c

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core: implement data directory access, closes #2454 @1h
author David Demelier <markand@malikania.fr>
date Mon, 13 Jan 2020 13:28:53 +0100
parents 5519ad48822e
children b815621df3e3
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3054723e53d7 core: implement clock, closes #2443
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1 /*
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2 * clock.h -- track elapsed time
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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 #ifndef MOLKO_CLOCK_H
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20 #define MOLKO_CLOCK_H
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21
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22 /**
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23 * \file clock.h
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24 * \brief Track elapsed time.
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25 */
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26
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27 #include <stdint.h>
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28
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29 /**
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30 * \brief Clock structure.
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31 */
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32 struct clock {
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33 uint64_t ticks; /*!< time point on initialization */
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34 };
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35
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36 /**
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37 * Start the clock and track elapsed time.
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38 *
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39 * \pre clock != NULL
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40 * \param clock the clock
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41 */
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42 void
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43 clock_start(struct clock *clock);
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44
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45 /**
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46 * Tell the measured time.
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47 *
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48 * \pre clock != NULL
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49 * \param clock the clock
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50 * \return the elapsed time in milliseconds
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51 */
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52 uint64_t
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53 clock_elapsed(const struct clock *clock);
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54
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55 #endif /* !MOLKO_CLOCK_H */