From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: Lukasz Majewski <lukma@denx.de>
Cc: GNU C Library <libc-alpha@sourceware.org>
Subject: Re: [PATCH] tst: Add test for sigtimedwait
Date: Mon, 22 Mar 2021 16:18:05 -0300 [thread overview]
Message-ID: <24e8a41d-e347-2a9a-9966-b5c74b58b5cc@linaro.org> (raw)
In-Reply-To: <20210315114239.9070-1-lukma@denx.de>
On 15/03/2021 08:42, Lukasz Majewski wrote:
> This change adds new test to assess sigtimedwait's timeout related
> functionality - the sigset_t is configured for SIGUSR1, which will
> not be triggered, so sigtimedwait just waits for timeout.
>
> To be more specific - two use cases are checked:
> - if sigtimedwait times out immediately when passed struct timespec has
> zero values of tv_nsec and tv_sec.
> - if sigtimedwait times out after timeout specified in passed argument
LGTM with the small nit below.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
> ---
> sysdeps/unix/sysv/linux/Makefile | 5 +-
> sysdeps/unix/sysv/linux/tst-sigtimedwait.c | 61 ++++++++++++++++++++++
> 2 files changed, 64 insertions(+), 2 deletions(-)
> create mode 100644 sysdeps/unix/sysv/linux/tst-sigtimedwait.c
>
> diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
> index 41798feb35..a3eba0db01 100644
> --- a/sysdeps/unix/sysv/linux/Makefile
> +++ b/sysdeps/unix/sysv/linux/Makefile
> @@ -113,8 +113,9 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
> tst-tgkill tst-sysvsem-linux tst-sysvmsg-linux tst-sysvshm-linux \
> tst-timerfd tst-ppoll tst-futimens tst-utime tst-utimes \
> tst-clock_adjtime tst-adjtimex tst-ntp_adjtime tst-futimes \
> - tst-lutimes tst-ntp_gettime tst-ntp_gettimex tst-getrusage
> -
> + tst-lutimes tst-ntp_gettime tst-ntp_gettimex tst-getrusage \
> + tst-sigtimedwait
> +
> # Test for the symbol version of fcntl that was replaced in glibc 2.28.
> ifeq ($(have-GLIBC_2.27)$(build-shared),yesyes)
> tests += tst-ofdlocks-compat
Ok.
> diff --git a/sysdeps/unix/sysv/linux/tst-sigtimedwait.c b/sysdeps/unix/sysv/linux/tst-sigtimedwait.c
> new file mode 100644
> index 0000000000..95a1b59592
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/tst-sigtimedwait.c
> @@ -0,0 +1,61 @@
> +/* Test for sigtimedwait timeout
> + 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 <errno.h>
> +#include <signal.h>
> +#include <support/check.h>
> +#include <support/xtime.h>
> +#include <support/timespec.h>
> +#include <stdbool.h>
> +
> +static int test_sigtimedwait_timeout (bool zero_tmo)
Put the function name on the next line.
> +{
> + /* We wait for half a second. */
> + struct timespec ts;
> + xclock_gettime (CLOCK_REALTIME, &ts);
> + struct timespec timeout = make_timespec (0, zero_tmo ? 0 : TIMESPEC_HZ/2);
> + ts = timespec_add (ts, timeout);
> +
> + /* Set sigset to just wait for timeout. */
> + sigset_t ss_usr1;
> + sigemptyset (&ss_usr1);
> + sigaddset (&ss_usr1, SIGUSR1);
> +
> + int ret = sigtimedwait (&ss_usr1, NULL, &timeout);
> + if (ret != -1)
> + FAIL_EXIT1 ("sigtimedwait failed: %m\n");
> +
> + TEST_TIMESPEC_NOW_OR_AFTER (CLOCK_REALTIME, ts);
> +
> + return 0;
> +}
> +
Ok.
> +static int
> +do_test (void)
> +{
> + /* Check if sigtimedwait exits immediately. */
> + test_sigtimedwait_timeout (true);
> +
> + /* Check if sigtimedwait exits after specified timeout. */
> + test_sigtimedwait_timeout (false);
> +
> + return 0;
> +}
> +
> +#include <support/test-driver.c>
>
Ok.
prev parent reply other threads:[~2021-03-22 19:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 11:42 Lukasz Majewski
2021-03-22 11:26 ` Lukasz Majewski
2021-03-22 19:18 ` Adhemerval Zanella [this message]
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