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Message-ID: <51670A56.6090701@alice.it>
Date: Thu, 11 Apr 2013 21:09:10 +0200
From: Angelo Graziosi <angelo DOT graziosi AT alice DOT it>
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To: Cygwin <cygwin AT cygwin DOT com>
CC: fortran <fortran AT gcc DOT gnu DOT org>, Tobias Burnus <burnus AT net-b DOT de>
Subject: Re: Cygwin with clock_gettime and CLOCK_MONOTONIC - gives always 0
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Hi mum [1],

Corinna Vinschen wrote:

> Works fine for me with the current Cygwin 1.7.17, and the upcoming
> Cygwin 1.7.18:
>
>   $ cat > ct.c <<EOF

At each run, your test case almost always starts with the same value:

$ gcc -o ct ct.c

$ ./ct
tv_sec = 0, tv_nsec = 2793
tv_sec = 0, tv_nsec = 999989104
tv_sec = 2, tv_nsec = 15365
tv_sec = 3, tv_nsec = 17879

$ ./ct
tv_sec = 0, tv_nsec = 2793
tv_sec = 0, tv_nsec = 999990222
tv_sec = 1, tv_nsec = 999997765
tv_sec = 3, tv_nsec = 3911

$ ./ct
tv_sec = 0, tv_nsec = 2793
tv_sec = 0, tv_nsec = 999987428
tv_sec = 2, tv_nsec = 5587
tv_sec = 3, tv_nsec = 11453

$ ./ct
tv_sec = 0, tv_nsec = 2793
tv_sec = 0, tv_nsec = 999989942
tv_sec = 1, tv_nsec = 999996088
tv_sec = 3, tv_nsec = 2514

$ ./ct
tv_sec = 0, tv_nsec = 2793
tv_sec = 0, tv_nsec = 999990222
tv_sec = 2, tv_nsec = 4190
tv_sec = 3, tv_nsec = 11733

$ ./ct
tv_sec = 0, tv_nsec = 3073
tv_sec = 0, tv_nsec = 999989942
tv_sec = 1, tv_nsec = 999996926
tv_sec = 3, tv_nsec = 3911

[...]

I wonder if this is to be expected...

and, Tobias, why your test case [2] prints always "0" [3]? it looks very 
similar to that of Corinna.. oops mum.. ;-)


Ciao,
  Angelo.


---
[1] http://cygwin.com/ml/cygwin-apps/2013-04/msg00120.html
[2] http://gcc.gnu.org/ml/fortran/2013-04/msg00082.html
[3] http://gcc.gnu.org/ml/fortran/2013-04/msg00084.html

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