todo

来自「这是我们参加06年全国开源软件的竞赛作品」· 代码 · 共 12 行

Implement the event constructors for input operation (inputEvt, ...).

Slow down timer interrupts when pausing for I/O, etc.  When waiting for
just a single kind of thing (e.g., I/O), we can just wait, instead of
sigpause.  Also, we should eventually use asynchronous mechanisms, such
as SIGCHLD and SIGIO.

Add a CML interface to signals.

Add clean-up code for sockets.