const Impl = if (native_os == .windows)
WindowsThreadImpl
else if (use_pthreads)
PosixThreadImpl
else if (native_os == .linux)
LinuxThreadImpl
else if (native_os == .wasi)
WasiThreadImpl
else
UnsupportedImpl 18
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27const Impl = if (native_os == .windows)
WindowsThreadImpl
else if (use_pthreads)
PosixThreadImpl
else if (native_os == .linux)
LinuxThreadImpl
else if (native_os == .wasi)
WasiThreadImpl
else
UnsupportedImpl