13. Callout 構造
struct callo
{
int c_time; /* ticks between events */
int c_arg; /* function argument */
int (*c_func)(); /* function pointer */
} callout[NCALL];
20. Unix のPPDA (PerProcDataArea)
User構造体 user.h
The user structure. One allocated per process.
Contains all per process data that doesn't need
to be referenced while the process is swapped.
Proc構造体 proc.h
One structure allocated per active process. It
contains all data needed about the process while
the process may be swapped out. Other per
process data (user.h) is swapped with the
process.