Last change
on this file since 577 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
918 bytes
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Line | |
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1 | /* |
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2 | FUNCTION |
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3 | <<time>>---get current calendar time (as single number) |
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4 | |
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5 | INDEX |
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6 | time |
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7 | |
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8 | SYNOPSIS |
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9 | #include <time.h> |
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10 | time_t time(time_t *<[t]>); |
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11 | |
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12 | DESCRIPTION |
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13 | <<time>> looks up the best available representation of the current |
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14 | time and returns it, encoded as a <<time_t>>. It stores the same |
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15 | value at <[t]> unless the argument is <<NULL>>. |
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16 | |
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17 | RETURNS |
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18 | A <<-1>> result means the current time is not available; otherwise the |
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19 | result represents the current time. |
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20 | |
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21 | PORTABILITY |
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22 | ANSI C requires <<time>>. |
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23 | |
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24 | Supporting OS subroutine required: Some implementations require |
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25 | <<gettimeofday>>. |
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26 | */ |
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27 | |
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28 | /* Most times we have a system call in newlib/libc/sys/.. to do this job */ |
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29 | |
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30 | #include <_ansi.h> |
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31 | #include <reent.h> |
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32 | #include <sys/types.h> |
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33 | #include <sys/time.h> |
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34 | |
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35 | time_t |
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36 | time (time_t * t) |
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37 | { |
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38 | struct timeval now; |
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39 | |
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40 | if (_gettimeofday_r (_REENT, &now, NULL) < 0) |
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41 | now.tv_sec = (time_t) -1; |
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42 | |
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43 | if (t) |
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44 | *t = now.tv_sec; |
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45 | return now.tv_sec; |
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46 | } |
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