1 /* 2 * Copyright (c) 1982 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)callout.h 6.2 (Berkeley) 06/08/85 7 */ 8 9 /* 10 * The callout structure is for 11 * a routine arranging 12 * to be called by the clock interrupt 13 * (clock.c) with a specified argument, 14 * in a specified amount of time. 15 * Used, for example, to time tab 16 * delays on typewriters. 17 */ 18 19 struct callout { 20 int c_time; /* incremental time */ 21 caddr_t c_arg; /* argument to routine */ 22 int (*c_func)(); /* routine */ 23 struct callout *c_next; 24 }; 25 #ifdef KERNEL 26 struct callout *callfree, *callout, calltodo; 27 int ncallout; 28 #endif 29