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Posted to reviews@mesos.apache.org by Dmitry Zhuk <dz...@twopensource.com> on 2017/12/05 12:18:11 UTC
Review Request 64338: Reduced number of supported arguments in
_Deferred conversion operators.
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/64338/
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Review request for mesos, Benjamin Mahler and Michael Park.
Repository: mesos
Description
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Conversion of `_Deferred` to `std::function` and `Deferred` currently
supports up to 12 parameters in function signature. However, this is
unnecessary and is a huge overhead. Most usages require just one
parameter (e.g. when `defer` is used with `Future`). And there are few
usages with two parameters (in `master.cpp` to initialize allocator, and
in `slave.cpp` to install signal handler).
This number of parameters is different from the number of parameters
passed to `defer`, but it's related and can be defined as maximum number
of placeholders that can be passed to `defer`.
Given that `deferred.hpp` is indirectly included in most source files,
it is beneficial to keep this number low. This patch changes maximum
number of parameters to 2.
Diffs
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3rdparty/libprocess/include/process/deferred.hpp 950f1cccaf93298664a95ba1fd2c5d2a42deb725
Diff: https://reviews.apache.org/r/64338/diff/1/
Testing
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make check
Thanks,
Dmitry Zhuk
Re: Review Request 64338: Reduced number of supported arguments in
_Deferred conversion operators.
Posted by Michael Park <mp...@apache.org>.
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/64338/#review192910
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Ship it!
Ship It!
- Michael Park
On Dec. 5, 2017, 4:18 a.m., Dmitry Zhuk wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/64338/
> -----------------------------------------------------------
>
> (Updated Dec. 5, 2017, 4:18 a.m.)
>
>
> Review request for mesos, Benjamin Mahler and Michael Park.
>
>
> Repository: mesos
>
>
> Description
> -------
>
> Conversion of `_Deferred` to `std::function` and `Deferred` currently
> supports up to 12 parameters in function signature. However, this is
> unnecessary and is a huge overhead. Most usages require just one
> parameter (e.g. when `defer` is used with `Future`). And there are few
> usages with two parameters (in `master.cpp` to initialize allocator, and
> in `slave.cpp` to install signal handler).
> This number of parameters is different from the number of parameters
> passed to `defer`, but it's related and can be defined as maximum number
> of placeholders that can be passed to `defer`.
>
> Given that `deferred.hpp` is indirectly included in most source files,
> it is beneficial to keep this number low. This patch changes maximum
> number of parameters to 2.
>
>
> Diffs
> -----
>
> 3rdparty/libprocess/include/process/deferred.hpp 950f1cccaf93298664a95ba1fd2c5d2a42deb725
>
>
> Diff: https://reviews.apache.org/r/64338/diff/1/
>
>
> Testing
> -------
>
> make check
>
>
> Thanks,
>
> Dmitry Zhuk
>
>