1 /* 2 * Copyright (c) 1983 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #if defined(LIBC_SCCS) && !defined(lint) 9 static char sccsid[] = "@(#)nice.c 5.5 (Berkeley) 02/23/91"; 10 #endif /* LIBC_SCCS and not lint */ 11 12 #include <sys/time.h> 13 #include <sys/resource.h> 14 #include <unistd.h> 15 16 /* 17 * Backwards compatible nice. 18 */ 19 int 20 nice(incr) 21 int incr; 22 { 23 int prio; 24 extern int errno; 25 26 errno = 0; 27 prio = getpriority(PRIO_PROCESS, 0); 28 if (prio == -1 && errno) 29 return (-1); 30 return (setpriority(PRIO_PROCESS, 0, prio + incr)); 31 } 32