Last change
on this file since 3882 was 1765, checked in by Bruno Cornec, 17 years ago |
Update to busybox 1.7.2
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-
Property svn:eol-style
set to
native
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File size:
974 bytes
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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Utility routines.
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4 | *
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5 | * Copyright (C) 2007 Denis Vlasenko
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6 | *
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7 | * Licensed under GPL version 2, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | #include "libbb.h"
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11 |
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12 | #if ENABLE_MONOTONIC_SYSCALL
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13 | #include <sys/syscall.h>
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14 |
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15 | /* libc has incredibly messy way of doing this,
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16 | * typically requiring -lrt. We just skip all this mess */
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17 | unsigned long long monotonic_us(void)
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18 | {
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19 | struct timespec ts;
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20 | if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts))
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21 | bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
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22 | return ts.tv_sec * 1000000ULL + ts.tv_nsec/1000;
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23 | }
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24 | unsigned monotonic_sec(void)
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25 | {
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26 | struct timespec ts;
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27 | if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts))
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28 | bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
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29 | return ts.tv_sec;
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30 | }
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31 | #else
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32 | unsigned long long monotonic_us(void)
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33 | {
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34 | struct timeval tv;
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35 | gettimeofday(&tv, NULL);
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36 | return tv.tv_sec * 1000000ULL + tv.tv_usec;
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37 | }
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38 |
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39 | unsigned monotonic_sec(void)
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40 | {
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41 | return time(NULL);
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42 | }
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43 | #endif
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