lib/std/Io.zig          |  4 ++
 lib/std/Io/Threaded.zig | 63 ++++++++++++++++++++++++--------
 lib/std/os.zig          |  8 +++-
 lib/std/posix.zig       | 26 +------------
 lib/std/posix/test.zig  | 58 -----------------------------
 5 files changed, 59 insertions(+), 100 deletions(-)