Computer clock

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Is it possible to calculate the difference between two time records separated by less than one second using the computer clock? For example, between 12h00m00s000ms and 12h00m00s050ms.

c linux

  • See if you can get help http://stackoverflow.com/a/16276032/221800

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Take a look at this: clock_getres, clock_gettime, clock_settime And here: http://man7.org/linux/man-pages/man2/clock_gettime.2.html

int clock_getres(clockid_t clk_id, struct timespec *res);

The function clock_getres() finds the resolution (accuracy) of the watch clk_id specified, and, if res is not NULL, stores the result in the struct timespec pointed by res. The resolution of clocks depends on implementation and cannot be configured by a particular process. If the time value pointed by the argument tp of clock_settime() is not a multiple of res, then it is truncated to a multiple of res.

int clock_gettime(clockid_t clk_id, struct timespec *tp);
int clock_settime(clockid_t clk_id, const struct timespec *tp);

The functions clock_gettime() and clock_settime() recover and assign the time of the clock clk_id specified.

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    The idea of rejecting answers only with a link is not only a question of the link "disappear" or not: it is important for the community to have content here, and in Portuguese. If you don’t want to translate the documentation, you are in your right (by the way, I’ll give you a little help on this... ;) ) but could at least put an example of usage, an informal explanation of what the methods do, or something like that.

  • P.S. I’m sorry if you think it wasn’t right for me to edit your answer without your consent. Anything, just revert to original review.

  • The problem is that you translated a "piece" of documentation. I am Frances and we have in many cases the same problem with documentation mainly in English. It is possible to translate, right. But in this case, I think that Francis should not only keep the translation but that he should read the full doc. Good luck to him! And thank you so much for Grandpa!

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    Of course, a link accompanying the answer is always welcome, even if in another language. The problem is when the whole or almost the whole of the answer consists of the link.

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