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Bill b250ef67be
initial commit 		2 years ago
README.md initial commit 2 years ago
bench.py initial commit 2 years ago
gcc12.2.0deadlockbug.cpp initial commit 2 years ago
test.cpp initial commit 2 years ago

README.md

Inter-thread Communication Benchmark

This code tests the best way to collaborate between threads

Platform tested:

  • Windows (MSVC, gcc-12.2, WSL-gcc11.2, WSL-clang-14)
  • macOS (clang-13, gcc-12.2)
  • Linux (gcc-12.1, gcc-11.3, clang-12)
  • arm64 Linux (gcc-12.1, clang-12)

Method tested:

  • C++20 std::semaphores
  • Native semaphores
  • Condition Variables
  • Busy waiting (spinlock) with or without delay

Results: macOS linux win, msc win, gcc cv 6000 10000 700 26000 busy 360 300 550 300 nsmph 600 4418 6000 1200 smph 240 1000/dl 660 dl

Bug on g++ 12.2.0 might cause deadlock, see: gcc12.2.0deadlockbug.cpp