lib/std/Io.zig                 |  15 +-
 lib/std/Io/RwLock.zig          | 238 ++++++++++++++++++++++++++++++++
 lib/std/Io/Semaphore.zig       |  65 +++++++++
 lib/std/Io/Threaded.zig        |   8 +-
 lib/std/debug/SelfInfo/Elf.zig |  36 +++--
 5 files changed, 342 insertions(+), 20 deletions(-)