1 /* callout.h 3.2 06/07/80 */ 2 3 /* 4 * The callout structure is for 5 * a routine arranging 6 * to be called by the clock interrupt 7 * (clock.c) with a specified argument, 8 * in a specified amount of time. 9 * Used, for example, to time tab 10 * delays on typewriters. 11 */ 12 13 struct callo 14 { 15 int c_time; /* incremental time */ 16 caddr_t c_arg; /* argument to routine */ 17 int (*c_func)(); /* routine */ 18 }; 19 struct callo callout[NCALL]; 20