Return to nice.c CVS log

Up to [CSRG BSD Unix] / 43BSDReno / usr.bin / nice

Annotation of 43BSDReno/usr.bin/nice/nice.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1989 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: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: char copyright[] =
                     22: "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
                     23:  All rights reserved.\n";
                     24: #endif /* not lint */
                     25: 
                     26: #ifndef lint
                     27: static char sccsid[] = "@(#)nice.c     5.4 (Berkeley) 6/1/90";
                     28: #endif /* not lint */
                     29: 
                     30: #include <sys/time.h>
                     31: #include <sys/resource.h>
                     32: #include <stdio.h>
                     33: #include <ctype.h>
                     34: 
                     35: #define        DEFNICE 10
                     36: 
                     37: /* ARGSUSED */
                     38: main(argc, argv)
                     39:        int argc;
                     40:        char **argv;
                     41: {
                     42:        extern int errno;
                     43:        int niceness;
                     44:        char *strerror();
                     45: 
                     46:        niceness = DEFNICE;
                     47:        if (argv[1][0] == '-')
                     48:                if (isdigit(argv[1][1])) {
                     49:                        niceness = atoi(argv[1] + 1);
                     50:                        ++argv;
                     51:                }
                     52:                else {
                     53:                        (void)fprintf(stderr, "nice: illegal option -- %c\n",
                     54:                            argv[1][1]);
                     55:                        usage();
                     56:                }
                     57: 
                     58:        if (!argv[1])
                     59:                usage();
                     60: 
                     61:        errno = 0;
                     62:        niceness += getpriority(PRIO_PROCESS, 0);
                     63:        if (errno) {
                     64:                (void)fprintf(stderr, "nice: getpriority: %s\n",
                     65:                    strerror(errno));
                     66:                exit(1);
                     67:        }
                     68:        if (setpriority(PRIO_PROCESS, 0, niceness)) {
                     69:                (void)fprintf(stderr,
                     70:                    "nice: setpriority: %s\n", strerror(errno));
                     71:                exit(1);
                     72:        }
                     73:        execvp(argv[1], &argv[1]);
                     74:        (void)fprintf(stderr,
                     75:            "nice: %s: %s\n", argv[1], strerror(errno));
                     76:        exit(1);
                     77: }
                     78: 
                     79: usage()
                     80: {
                     81:        (void)fprintf(stderr,
                     82:            "nice [ -# ] command [ options ] [ operands ]\n");
                     83:        exit(1);
                     84: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.