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From Jiang Yan Xu <...@jxu.me>
Subject Re: Review Request 56732: Remove unnecessary perf version checks.
Date Fri, 28 Apr 2017 23:08:39 GMT


> On April 28, 2017, 4:06 p.m., Jiang Yan Xu wrote:
> > src/linux/perf.cpp
> > Line 322 (original), 313 (patched)
> > <https://reviews.apache.org/r/56732/diff/1/?file=1635867#file1635867line322>
> >
> >     Now without the `process::collect`.
> >     
> >     1. Remove from includes:
> >     ```
> >     #include <process/collect.hpp>
> >     ```
> >     
> >     2. We can just inline the lambda (the way we usually do this)
> >     
> >     ```
> >       return output
> >         .then([start, duration](const string output)
> >             -> Future<hashmap<string, mesos::PerfStatistics>> {
> >           Try<hashmap<string, mesos::PerfStatistics>> result =
> >             perf::parse(output);
> >     
> >           if (result.isError()) {
> >             return Failure("Failed to parse perf sample: " + result.error());
> >           }
> >     
> >           foreachvalue (mesos::PerfStatistics& statistics, result.get()) {
> >             statistics.set_timestamp(start.secs());
> >             statistics.set_duration(duration.secs());
> >           }
> >     
> >           return result.get();
> >         });
> >     ```

Apparently we have to keep `#include <process/collect.hpp>` for `process:await`.


- Jiang Yan


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/56732/#review173393
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On Feb. 15, 2017, 3:22 p.m., James Peach wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/56732/
> -----------------------------------------------------------
> 
> (Updated Feb. 15, 2017, 3:22 p.m.)
> 
> 
> Review request for mesos, Mesos Reviewbot and Jiang Yan Xu.
> 
> 
> Bugs: MESOS-7049
>     https://issues.apache.org/jira/browse/MESOS-7049
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> We can remove the version check from the perf subprocess
> wrapper because we longer uses the version to figure out
> how to parse the stat output and the callers explicitly
> check perf::supported().
> 
> 
> Diffs
> -----
> 
>   src/linux/perf.hpp 9c4330b6086abb18f036222260fe89a6fb01d8ed 
>   src/linux/perf.cpp 3141e5ee9eee78e974625791f362dc345c682ebb 
>   src/tests/containerizer/perf_tests.cpp d536ecc5cb24787bc3487efb146573cd4f3ded43 
> 
> 
> Diff: https://reviews.apache.org/r/56732/diff/1/
> 
> 
> Testing
> -------
> 
> sudo make check (Fedora 25)
> 
> 
> Thanks,
> 
> James Peach
> 
>


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