mirror of
https://github.com/sheumann/hush.git
synced 2024-09-12 15:54:56 +00:00
33 lines
780 B
C
33 lines
780 B
C
|
/* vi: set sw=4 ts=4: */
|
||
|
|
/*
|
||
|
|
* Utility routines.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 Denis Vlasenko
|
||
|
|
*
|
||
|
|
* Licensed under GPL version 2, see file LICENSE in this tarball for details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "libbb.h"
|
||
|
|
|
||
|
|
#if ENABLE_MONOTONIC_SYSCALL
|
||
|
|
#include <sys/syscall.h>
|
||
|
|
|
||
|
|
/* libc has incredibly messy way of doing this,
|
||
|
|
* typically requiring -lrt. We just skip all this mess */
|
||
|
|
unsigned long long monotonic_us(void)
|
||
|
|
{
|
||
|
|
struct timespec ts;
|
||
|
|
if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts))
|
||
|
|
bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
|
||
|
|
return ts.tv_sec * 1000000ULL + ts.tv_nsec/1000;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
unsigned long long monotonic_us(void)
|
||
|
|
{
|
||
|
|
struct timeval tv;
|
||
|
|
if (gettimeofday(&tv, NULL))
|
||
|
|
bb_error_msg_and_die("gettimeofday failed");
|
||
|
|
return tv.tv_sec * 1000000ULL + tv_usec;
|
||
|
|
}
|
||
|
|
#endif
|