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459be35234
libbb/time.c: new file, introducing monotonic_us() pscan, traceroute, arping: use it instead of gettimeofday ping, zcip: TODO function old new delta monotonic_us - 89 +89 find_pair 164 180 +16 .rodata 129747 129763 +16 refresh 1144 1152 +8 ............ timeout 8 4 -4 static.start 8 4 -4 last 8 4 -4 parse_conf 1303 1284 -19 time_main 1149 1124 -25 gettimeofday_us 39 - -39 arping_main 2042 1969 -73 hwclock_main 594 501 -93 catcher 485 380 -105 traceroute_main 4300 4117 -183 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 8/11 up/down: 157/-562) Total: -405 bytes
33 lines
780 B
C
33 lines
780 B
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 2007 Denis Vlasenko
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*
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* Licensed under GPL version 2, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#if ENABLE_MONOTONIC_SYSCALL
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#include <sys/syscall.h>
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/* libc has incredibly messy way of doing this,
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* typically requiring -lrt. We just skip all this mess */
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unsigned long long monotonic_us(void)
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{
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struct timespec ts;
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if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts))
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bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
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return ts.tv_sec * 1000000ULL + ts.tv_nsec/1000;
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}
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#else
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unsigned long long monotonic_us(void)
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{
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struct timeval tv;
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if (gettimeofday(&tv, NULL))
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bb_error_msg_and_die("gettimeofday failed");
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return tv.tv_sec * 1000000ULL + tv_usec;
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}
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#endif
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