https://bugs.winehq.org/show_bug.cgi?id=57061
--- Comment #2 from cqwrteur euloanty@live.com --- (In reply to Zeb Figura from comment #1)
What kind of numbers do you get on Windows (ideally on the same hardware?)
D:\msys64\home\unlvs\projects\fast_io\benchmark\0002.file_io_tsc\time>clang++ -o iobuf_file_lockable_srwlock.exe iobuf_file_lockable.cc -O3 -std=c++26 -I../../../include --target=x86_64-windows-msvc --sysroot=D:\toolchains\windows-msvc-sysroot -D_DLL=1 -lmsvcrt -fuse-ld=lld -flto=thin
D:\msys64\home\unlvs\projects\fast_io\benchmark\0002.file_io_tsc\time>clang++ -o iobuf_file_lockable_critical_section.exe iobuf_file_lockable.cc -O3 -std=c++26 -I../../../include --target=x86_64-windows-msvc --sysroot=D:\toolchains\windows-msvc-sysroot -D_DLL=1 -lmsvcrt -fuse-ld=lld -flto=thin
D:\msys64\home\unlvs\projects\fast_io\benchmark\0002.file_io_tsc\time>del *.txt Could Not Find D:\msys64\home\unlvs\projects\fast_io\benchmark\0002.file_io_tsc\time*.txt
D:\msys64\home\unlvs\projects\fast_io\benchmark\0002.file_io_tsc\time>iobuf_file_lockable_srwlock.exe output:0.1471754s input:0.1363283s
D:\msys64\home\unlvs\projects\fast_io\benchmark\0002.file_io_tsc\time>del *.txt
D:\msys64\home\unlvs\projects\fast_io\benchmark\0002.file_io_tsc\time>iobuf_file_lockable_critical_section.exe output:0.1584142s input:0.1377649s
SRWLock is faster than CriticalSection.
I'll send you the binary