[LTP] [PATCH v3 3/4] tst_timer: Create interface for using multiple timers
Richard Palethorpe
rpalethorpe@suse.de
Thu Aug 16 15:06:28 CEST 2018
Hello,
Cyril Hrubis <chrubis@suse.cz> writes:
> Hi!
>> > +/**
>> > + * Encapsulates a stopwatch timer.
>> > + *
>> > + * Useful when you need to use multiple timers in a single test.
>> > + */
>> > +struct tst_timer {
>> > + /** The POSIX clock type */
>> > + clockid_t clock_id;
>> > + /** How much time can pass before tst_timer_expired_st() returns true */
>> > + struct timespec limit;
>> > + /** Where to start measuring time from */
>> > + struct timespec start_time;
>> > +};
>
> On a related note, do you really think that we will need nsec resoltion
> for the timeout timers? I would say that keeping the limit as unsigned
> integer holding number of seconds would be more than enough.
I agree that seconds are appropriate for test timeouts, but it is
practically 'free' to use the struct here because of the existing API to
compare timespec structs. Also I might use this interface to time
syscalls and maybe remove some code duplication.
--
Thank you,
Richard.
More information about the ltp
mailing list