Last change
on this file since 1900 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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Rev | Line | |
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[1765] | 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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