1 /* 2 * Copyright (c) 1983 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 static char sccsid[] = "@(#)nice.c 5.3 (Berkeley) 07/18/89"; 20 #endif /* LIBC_SCCS and not lint */ 21 22 #include <sys/time.h> 23 #include <sys/resource.h> 24 25 /* 26 * Backwards compatible nice. 27 */ 28 nice(incr) 29 int incr; 30 { 31 int prio; 32 extern int errno; 33 34 errno = 0; 35 prio = getpriority(PRIO_PROCESS, 0); 36 if (prio == -1 && errno) 37 return (-1); 38 return (setpriority(PRIO_PROCESS, 0, prio + incr)); 39 } 40