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Taken from: https://salsa.debian.org/glibc-team/glibc/-/blob/9ce19663f00176f30d6eab29fd14db3e7cd53dcf/debian/patches/hurd-i386/unsubmitted-clock_t_centiseconds.diff
Some applications assume centisecond precision, or at most millisecond precision
(e.g. guile). This is a work-around for them.
---
getclktck.c | 5 ++---
setitimer.c | 2 +-
times.c | 2 +-
4 files changed, 8 insertions(+), 9 deletions(-)
commit d57f2f9b4bd007846af2fb4217486ea572579010
Author: Richard Braun <rbraun@sceen.net>
Date: Tue Aug 27 11:35:31 2013 +0200
Express CPU time (clock_t of times(2)) in centiseconds
diff --git a/sysdeps/mach/hurd/getclktck.c b/sysdeps/mach/hurd/getclktck.c
index 69be2cc..5f7d946 100644
--- a/sysdeps/mach/hurd/getclktck.c
+++ b/sysdeps/mach/hurd/getclktck.c
@@ -18,12 +18,11 @@
#include <time.h>
-/* Return frequency of `times'.
- Since Mach reports CPU times in microseconds, we always use 1 million. */
+/* Return frequency of `times'. */
int
__getclktck (void)
{
- return 1000000;
+ return 100;
}
/* Before glibc 2.2, the Hurd actually did this differently, so we
diff --git a/sysdeps/mach/hurd/setitimer.c b/sysdeps/mach/hurd/setitimer.c
index 39b6b16..4992c89 100644
--- a/sysdeps/mach/hurd/setitimer.c
+++ b/sysdeps/mach/hurd/setitimer.c
@@ -42,7 +42,7 @@ quantize_timeval (struct timeval *tv)
static time_t quantum = -1;
if (quantum == -1)
- quantum = 1000000 / __getclktck ();
+ quantum = 100 / __getclktck ();
tv->tv_usec = ((tv->tv_usec + (quantum - 1)) / quantum) * quantum;
if (tv->tv_usec >= 1000000)
diff --git a/sysdeps/mach/hurd/times.c b/sysdeps/mach/hurd/times.c
index 9e13a75..593c33a 100644
--- a/sysdeps/mach/hurd/times.c
+++ b/sysdeps/mach/hurd/times.c
@@ -29,7 +29,7 @@
static inline clock_t
clock_from_time_value (const time_value_t *t)
{
- return t->seconds * 1000000 + t->microseconds;
+ return t->seconds * 100 + t->microseconds / 10000;
}
/* Store the CPU time used by this process and all its
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