[CRIU] [PATCH] test: add variable delta for poll.c test

[Pavel Emelyanov]

On 01/09/2017 11:39 AM, Vitaly Ostrosablin wrote:
> For ZDTM purposes, poll.c uses delta of 5 seconds, which is fine, since
> tests don't take a very long time to pass. However, in vzt-cpt, we start
> a batch with multitude of tests and starting them all could take over an
> hour. Hence, the test is bound to fail. An easy solution would be to
> introduce an environment variable, which would allow to specify the
> delta - ZDTM_DELTA. If it's unset (which is default behaviour in ZDTM) -
> it would default to 5 seconds. However, if it's set (what we can do from
> vzt-cpt) - then it will use delta which is set by our test.
> 
> Signed-off-by: Vitaly Ostrosablin <vostrosablin at virtuozzo.com>
> ---
>  test/zdtm/static/poll.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/test/zdtm/static/poll.c b/test/zdtm/static/poll.c
> index c0f75745..2368d079 100644
> --- a/test/zdtm/static/poll.c
> +++ b/test/zdtm/static/poll.c
> @@ -80,7 +80,9 @@ int main(int argc, char *argv[])
>  		show_timestamp("Start", time1.tv_sec, time1.tv_usec);
>  
>  		task_waiter_complete(&t, 1);
> -		delta = 5;
> +		char *deltaenv = getenv("ZDTM_DELTA")

Declaring variables in the middle of the code is not welcome.
Non-compiling patches are even less welcome.

-- Pavel

> +		if (deltaenv) delta = atoi(deltaenv);
> +		else delta = 5;
>  		while (test_go()) {
>  			ret = poll(ufds, 2, delta * 1000);
>  			show_pollfd(ufds, 2);
>