Re: [PATCH] tst: Provide test for getrusage

[Lukasz Majewski <lukma@denx.de>]

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Hi Andreas,

> On Mär 15 2021, Lukasz Majewski wrote:
> 
> > diff --git a/sysdeps/unix/sysv/linux/tst-getrusage.c
> > b/sysdeps/unix/sysv/linux/tst-getrusage.c new file mode 100644
> > index 0000000000..068becdadb
> > --- /dev/null
> > +++ b/sysdeps/unix/sysv/linux/tst-getrusage.c
> > @@ -0,0 +1,55 @@
> > +/* Test for getrusage
> > +   Copyright (C) 2021 Free Software Foundation, Inc.
> > +   This file is part of the GNU C Library.
> > +
> > +   The GNU C Library is free software; you can redistribute it
> > and/or
> > +   modify it under the terms of the GNU Lesser General Public
> > +   License as published by the Free Software Foundation; either
> > +   version 2.1 of the License, or (at your option) any later
> > version. +
> > +   The GNU C Library is distributed in the hope that it will be
> > useful,
> > +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> > +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> > GNU
> > +   Lesser General Public License for more details.
> > +
> > +   You should have received a copy of the GNU Lesser General Public
> > +   License along with the GNU C Library; if not, see
> > +   <https://www.gnu.org/licenses/>.  */
> > +
> > +#include <time.h>
> > +#include <sys/resource.h>
> > +#include <support/check.h>
> > +#include <support/timespec.h>
> > +
> > +#define TST_GETRUSAGE_TIMEOUT 1
> > +
> > +static int
> > +do_test (void)
> > +{
> > +  struct timespec tv_then, tv_now, gru_u, gru_s, s, r;
> > +  struct rusage ru;
> > +  int ret;
> > +
> > +  tv_then = xclock_now (CLOCK_REALTIME);
> > +  /* Busy wait for 1 second.  */
> > +  do
> > +  {
> > +    tv_now = xclock_now (CLOCK_REALTIME);
> > +    r = timespec_sub (tv_now, tv_then);
> > +  } while ( r.tv_sec != TST_GETRUSAGE_TIMEOUT );  
> 
> What happens if the process stalls for a second?

I think that the glibc's test infrastructure will kill it - the default
timeout is 2 seconds.

As a result the test will fail.

> 
> Andreas.
> 




Best regards,

Lukasz Majewski

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