From 4aca87515a5083ae0e31ce3177189fd43b6d05ac Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 3 Jan 2015 13:58:15 +0100 Subject: patch to Vanilla Tomato 1.28 --- release/src/router/busybox/libbb/time.c | 66 +++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 release/src/router/busybox/libbb/time.c (limited to 'release/src/router/busybox/libbb/time.c') diff --git a/release/src/router/busybox/libbb/time.c b/release/src/router/busybox/libbb/time.c new file mode 100644 index 00000000..850ac154 --- /dev/null +++ b/release/src/router/busybox/libbb/time.c @@ -0,0 +1,66 @@ +/* vi: set sw=4 ts=4: */ +/* + * Utility routines. + * + * Copyright (C) 2007 Denys Vlasenko + * + * Licensed under GPL version 2, see file LICENSE in this tarball for details. + */ + +#include "libbb.h" + +#if ENABLE_MONOTONIC_SYSCALL + +#include +/* Old glibc (< 2.3.4) does not provide this constant. We use syscall + * directly so this definition is safe. */ +#ifndef CLOCK_MONOTONIC +#define CLOCK_MONOTONIC 1 +#endif + +/* libc has incredibly messy way of doing this, + * typically requiring -lrt. We just skip all this mess */ +static void get_mono(struct timespec *ts) +{ + if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, ts)) + bb_error_msg_and_die("clock_gettime(MONOTONIC) failed"); +} +unsigned long long FAST_FUNC monotonic_ns(void) +{ + struct timespec ts; + get_mono(&ts); + return ts.tv_sec * 1000000000ULL + ts.tv_nsec; +} +unsigned long long FAST_FUNC monotonic_us(void) +{ + struct timespec ts; + get_mono(&ts); + return ts.tv_sec * 1000000ULL + ts.tv_nsec/1000; +} +unsigned FAST_FUNC monotonic_sec(void) +{ + struct timespec ts; + get_mono(&ts); + return ts.tv_sec; +} + +#else + +unsigned long long FAST_FUNC monotonic_ns(void) +{ + struct timeval tv; + gettimeofday(&tv, NULL); + return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000; +} +unsigned long long FAST_FUNC monotonic_us(void) +{ + struct timeval tv; + gettimeofday(&tv, NULL); + return tv.tv_sec * 1000000ULL + tv.tv_usec; +} +unsigned FAST_FUNC monotonic_sec(void) +{ + return time(NULL); +} + +#endif -- cgit v1.2.3-54-g00ecf