1 Commits

Author	SHA1	Message	Date
Bartosz Taudul	561d2dc360	Use the fastest mutex available. ... The selection is based on the following test results: MSVC: === Lock test, 6 threads === => NonRecursiveBenaphore No contention: 11.641 ns/iter 2 thread contention: 141.559 ns/iter 3 thread contention: 242.733 ns/iter 4 thread contention: 409.807 ns/iter 5 thread contention: 561.544 ns/iter 6 thread contention: 785.845 ns/iter => std::mutex No contention: 19.190 ns/iter 2 thread contention: 39.305 ns/iter 3 thread contention: 58.999 ns/iter 4 thread contention: 59.532 ns/iter 5 thread contention: 103.539 ns/iter 6 thread contention: 110.314 ns/iter => std::shared_timed_mutex No contention: 45.487 ns/iter 2 thread contention: 96.351 ns/iter 3 thread contention: 142.871 ns/iter 4 thread contention: 184.999 ns/iter 5 thread contention: 336.608 ns/iter 6 thread contention: 542.551 ns/iter => std::shared_mutex No contention: 10.861 ns/iter 2 thread contention: 17.495 ns/iter 3 thread contention: 31.126 ns/iter 4 thread contention: 40.468 ns/iter 5 thread contention: 15.677 ns/iter 6 thread contention: 64.505 ns/iter Cygwin (clang): === Lock test, 6 threads === => NonRecursiveBenaphore No contention: 11.536 ns/iter 2 thread contention: 121.082 ns/iter 3 thread contention: 396.430 ns/iter 4 thread contention: 672.555 ns/iter 5 thread contention: 1327.761 ns/iter 6 thread contention: 14151.955 ns/iter => std::mutex No contention: 62.583 ns/iter 2 thread contention: 3990.464 ns/iter 3 thread contention: 7161.189 ns/iter 4 thread contention: 9870.820 ns/iter 5 thread contention: 12355.178 ns/iter 6 thread contention: 14694.903 ns/iter => std::shared_timed_mutex No contention: 91.687 ns/iter 2 thread contention: 1115.037 ns/iter 3 thread contention: 4183.792 ns/iter 4 thread contention: 15283.491 ns/iter 5 thread contention: 27812.477 ns/iter 6 thread contention: 35028.140 ns/iter => std::shared_mutex No contention: 91.764 ns/iter 2 thread contention: 1051.826 ns/iter 3 thread contention: 5574.720 ns/iter 4 thread contention: 15721.416 ns/iter 5 thread contention: 27721.487 ns/iter 6 thread contention: 35420.404 ns/iter Linux (x64): === Lock test, 6 threads === => NonRecursiveBenaphore No contention: 13.487 ns/iter 2 thread contention: 210.317 ns/iter 3 thread contention: 430.855 ns/iter 4 thread contention: 510.533 ns/iter 5 thread contention: 1003.609 ns/iter 6 thread contention: 1787.683 ns/iter => std::mutex No contention: 12.403 ns/iter 2 thread contention: 157.122 ns/iter 3 thread contention: 186.791 ns/iter 4 thread contention: 265.073 ns/iter 5 thread contention: 283.778 ns/iter 6 thread contention: 270.687 ns/iter => std::shared_timed_mutex No contention: 21.509 ns/iter 2 thread contention: 150.179 ns/iter 3 thread contention: 256.574 ns/iter 4 thread contention: 415.351 ns/iter 5 thread contention: 611.532 ns/iter 6 thread contention: 944.695 ns/iter => std::shared_mutex No contention: 20.805 ns/iter 2 thread contention: 157.034 ns/iter 3 thread contention: 244.025 ns/iter 4 thread contention: 406.269 ns/iter 5 thread contention: 387.985 ns/iter 6 thread contention: 468.550 ns/iter Linux (arm64): === Lock test, 6 threads === => NonRecursiveBenaphore No contention: 20.891 ns/iter 2 thread contention: 211.037 ns/iter 3 thread contention: 409.962 ns/iter 4 thread contention: 657.441 ns/iter 5 thread contention: 828.405 ns/iter 6 thread contention: 1131.827 ns/iter => std::mutex No contention: 50.884 ns/iter 2 thread contention: 103.620 ns/iter 3 thread contention: 332.429 ns/iter 4 thread contention: 620.802 ns/iter 5 thread contention: 783.943 ns/iter 6 thread contention: 834.002 ns/iter => std::shared_timed_mutex No contention: 64.948 ns/iter 2 thread contention: 173.191 ns/iter 3 thread contention: 490.352 ns/iter 4 thread contention: 660.668 ns/iter 5 thread contention: 1014.546 ns/iter 6 thread contention: 1451.553 ns/iter => std::shared_mutex No contention: 64.521 ns/iter 2 thread contention: 195.222 ns/iter 3 thread contention: 490.819 ns/iter 4 thread contention: 654.786 ns/iter 5 thread contention: 955.759 ns/iter 6 thread contention: 1282.544 ns/iter	2018-07-14 00:39:01 +02:00