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Last change
on this file since 543 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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