refs #4452 / refs #11705 - improved `--showtime=` behavior and testing#4876

Merged

firewave merged 24 commits intodanmar:mainfrom

firewave:showtime

Oct 5, 2023

Commits on Sep 27, 2023

reset timer results before each test
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TestThreadExecutor: run tests with quiet flag
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TimerResults: avoid multiple threads writing their results over each other
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TestThreadExecutor: added some `showtime` tests
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actually only print the summary with `--showtime=summary`
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cmdlineparser.cpp: added TODO
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testthreadexecutor.cpp: added TODO
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Timer: removed TODOs
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moved `find_all_of()` into `cppcheck` namespace and into `helpers.h`
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TestThreadExecutor: inverted default quiet flag
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TestProcessExecutor: applied `TestThreadExecutor` changes / use TODO asserts for currently broken tests
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timer.cpp: added TODO
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cppcheck.cpp: suppress `unusedFunction` selfcheck warning
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deprecated `--showtime=top5` and introduced the modes `top5_file` and `top5_summary` / temporarily disabled collecting of timing information in daca
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renamed `find_all_of()` to `count_all_of()`
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TestSingleExecutor: applied changes from other executor tests / marked failed tests with TODO
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fixed TSAN errors in `Timer::stop()` with `--showtime=file` and multiple threads
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Timer: use a lock for all `std::cout` uses
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print timing information in the proper places for `SingleExecutor`
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ProcessExecutor: added (partial) missing printing of timing information and added TODO
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testprocessexecutor.cpp: fixed `bugprone-implicit-widening-of-multiplication-result` clang-tidy warning
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converted `test_showtimetop5.sh` into a Python test
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added test coverage and documentation for `--showtime=file-total`
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Timer: added missing lock for `SHOWTIME_FILE_TOTAL` printing
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