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Add new interface for time conversion #145

Merged
merged 7 commits into from
Nov 18, 2021
Merged

Add new interface for time conversion #145

merged 7 commits into from
Nov 18, 2021

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Barry-Xu-2018
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@Barry-Xu-2018 Barry-Xu-2018 commented Sep 16, 2021 •
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Add a new interface rcpputils::rcutils_duration_cast.

About this new interface, it is mentioned at ros2/rclcpp#1662 (ros2/rclcpp#1662 (comment))

@Barry-Xu-2018 Barry-Xu-2018 mentioned this pull request Sep 16, 2021
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fujitatomoya
fujitatomoya reviewed Sep 16, 2021
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aprotyas
aprotyas requested changes Sep 21, 2021
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Suggesting some inline fixes that should help address the problems with CI.

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@fujitatomoya

Please help to re-run CI.

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@ivanpauno friendly ping

ivanpauno
ivanpauno reviewed Oct 22, 2021
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@ivanpauno Updated based on your comments.
Please help to review again

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This looks like it needs a rebase, then CI and I think we can get it in.

Barry-Xu-2018
Barry-Xu-2018 commented Nov 15, 2021
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include/rcpputils/time.hpp Outdated
// Casting to a double representation might lose precision and allow the check below to succeed
// but the actual cast to nanoseconds fail. Using 1 DurationT worth of nanoseconds less than max
constexpr auto maximum_safe_cast_ns =
std::chrono::nanoseconds::max() - std::chrono::duration<DurationRepT, DurationT>(1);
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Found a bug.
std::chrono::duration<DurationRepT, DurationT>(1) depend on user input. This leads maximum_safe_cast_ns isn't fixed value. I will use std::chrono::nanoseconds(1) instead.

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I thought this was not a bug, it is intentionally based on user template unit. if i am not mistaken...

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If depend on user template unit, there is a below problem.
For the same time, std::chrono::minutes(2562047*60) doesn't throw exception, but std::chrono::hours(2562047) can show exception.

iuhilnehc-ynos
iuhilnehc-ynos approved these changes Nov 15, 2021
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LGTM

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LGTM

Sorry, wrong place to reply.

@Barry-Xu-2018
Add new interface for time conversion
d342160 
Signed-off-by: Barry Xu <barry.xu@sony.com>
@Barry-Xu-2018
Change return type and function name
fbd0581 
Signed-off-by: Barry Xu <barry.xu@sony.com>
@Barry-Xu-2018
Fix build error on Windows and MacOS
6bf8e51 
Signed-off-by: Barry Xu <barry.xu@sony.com>
@Barry-Xu-2018
Add check for the minimum
26f299b 
Signed-off-by: Barry Xu <barry.xu@sony.com>
@Barry-Xu-2018
Add example in comments and update test code
f45f6d4 
Signed-off-by: Barry Xu <barry.xu@sony.com>
@Barry-Xu-2018
The value of maximum_safe_cast_ns doesn't depend on user input.
d810a35 
Signed-off-by: Barry Xu <barry.xu@sony.com>
@Barry-Xu-2018
Address comments
e9f73af 
Signed-off-by: Barry Xu <barry.xu@sony.com>
@Barry-Xu-2018
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Do rebase

ivanpauno
ivanpauno approved these changes Nov 17, 2021
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lgtm!

@clalancette clalancette self-assigned this Nov 18, 2021
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@ivanpauno ivanpauno merged commit a02ef91 into ros2:master Nov 18, 2021
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@fujitatomoya fujitatomoya fujitatomoya approved these changes

@iuhilnehc-ynos iuhilnehc-ynos iuhilnehc-ynos approved these changes

@aprotyas aprotyas aprotyas approved these changes

@ivanpauno ivanpauno ivanpauno approved these changes

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@Barry-Xu-2018 @fujitatomoya @clalancette @iuhilnehc-ynos @ivanpauno @aprotyas