Dev - C++ and CMake

Language

https://en.cppreference.com/w/cpp/language

Insights into latest features

https://cppinsights.io

https://github.com/andreasfertig/cppinsights

For example, show equivalent source for:

• lambdas
• range-based for loops
• auto

Safe C++

https://safecpp.org/P3390R0.html?utm_source=the+new+stack&utm_medium=referral&utm_content=inline-mention&utm_campaign=tns+platform#the-call-for-memory-safety

Modules

https://nibblestew.blogspot.com/2023/10/the-road-to-hell-is-paved-with-good.html

Standard library

https://en.cppreference.com/w/cpp/standard_library

Build

Pro tip: CMake debugging

• look at build.make generated files to verify targets are there and all dependencies are correct

Speed-up builds

https://www.figma.com/blog/speeding-up-build-times/

• cut build times by 50%
• avoid unnecessary includes
• IWYU (Include What You Use) tool
• Don’t Include What You Don’t Use (DIWYDU) tool

Use ccache when available

https://invent.kde.org/utilities/konsole/-/merge_requests/26?tab=diffs

Or simpler, if not worrying about diagnostic colors

https://stackoverflow.com/questions/1815688/how-to-use-ccache-with-cmake#24305849

Modern CMake 3.x - best practices

https://gist.github.com/mbinna/c61dbb39bca0e4fb7d1f73b0d66a4fd1

Dependencies using FetchContent

https://eliasdaler.github.io/using-cmake/#manual-management

make “improvements”

https://tech.davis-hansson.com/p/make/

Debugging

Configure C++ toolchain to produce binaries that are highly-debuggable

https://dhashe.com/how-to-build-highly-debuggable-c-binaries.html

Code quality

clang-tidy to modernize C++ codebase

https://www.kdab.com/clang-tidy-part-1-modernize-source-code-using-c11c14/

Project organization

https://github.com/f3d-app/f3d

Project with:

• code formatting
• tests
• code coverage metrics

https://f3d.app//

Project page with great example of:

• GitHub Pages setup
• badges for CI, coverage, downloads, …
• list of contributors with avatars

Useful libraries

fmt

https://vitaut.net/posts/2024/binary-size/

• type erasure
• how to minimize template bloat

cpp-dump

https://github.com/philip82148/cpp-dump

Useful tools

https://github.com/haampie/libtree

• list dynamic lib dependencies (like ldd, but in tree form

Advanced tests

Fuzzing

https://github.com/antonio-morales/Fuzzing101

Performance

Tracing at high level

https://abstractexpr.com/2024/06/08/finding-out-where-syscalls-are-called-from-stack-traces-with-strace/

Magic-trace

magic-trace run  -full-execution <binary>

or

magic-trace run -trigger . 

See other options: -multi-thread -multi-snapshot -timer-resolution <res>

Perf and speedscope

https://github.com/jlfwong/speedscope

Collect profile data:

echo -1 > /proc/sys/kernel/perf_event_paranoid

perf record -a -F 999 -g -p PID > perf.data
perf script -i perf.data > profile.linux-perf.txt

and visualize .txt with speedscope.

Alternatively, if you have speedscope installed locally:

perf record -a -F 999 -g -p PID > perf.data
perf script -i perf.data | speedscope -

Perfetto UI

For large traces, use separate trace_processor service:

curl -L0 https://get.perfetto.dev/trace_processor
chmod +x trace_processor
./trace_processor --httpd /path/to/trace.pftrace

Memory profiling

https://github.com/milostosic/MTuner

Coz - causal profiler

https://github.com/plasma-umass/coz

Orbit - Hybrid sampling + tracing profiler

• not straightforward to set up
• now maintained by Google?

https://github.com/google/orbit

Benchmarking

https://github.com/sheredom/ubench.h

• microbenchmarks