[PATCH] tst: Provide test for getrusage

[Andreas Schwab]

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?

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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