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Integrate nonius to provide more advanced benchmarking #1616

Merged
merged 3 commits into from
Jun 7, 2019
Merged

Integrate nonius to provide more advanced benchmarking #1616

merged 3 commits into from
Jun 7, 2019

Commits on Jun 6, 2019

  1. Integrate Nonius benchmark into Catch2 

    Changes done to Nonius:
* Moved things into "Catch::Benchmark" namespace
* Benchmarks were integrated with `TEST_CASE`/`SECTION`/`GENERATE` macros
* Removed Nonius's parameters for benchmarks, Generators should be used instead
* Added relevant methods to the reporter interface (default-implemented, to avoid
breaking existing 3rd party reporters)
* Async processing is guarded with `_REENTRANT` macro for GCC/Clang, used by default
on MSVC
* Added a macro `CATCH_CONFIG_DISABLE_BENCHMARKING` that removes all traces of
benchmarking from Catch
    @fodinabor @horenmar
    fodinabor authored and horenmar committed Jun 6, 2019
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  2. Various improvements to the benchmarking support 

    * Units from <ratio> are no longer redeclared in our own namespace
* The default clock is `steady_clock`, not `high_resolution_clock`,
because, as HH says "high_resolution_clock is useless. If you want
measure the passing of time, use steady_clock. If you want user
friendly time, use system_clock".
* Benchmarking support is opt-in, not opt-out, to avoid the large
(~10%) compile time penalty.
* Benchmarking-related options in CLI are always present, to decrease
the amount of code that is only compiled conditionally and making
the whole shebang more maintainble.
    @horenmar
    horenmar committed Jun 6, 2019
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  3. Add an extra test for benchmarking macros 

    Also updated baselines
    @horenmar
    horenmar committed Jun 6, 2019
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