This is procpri/sched_set.c (Listing 35-2, page 743), an example from the book, The Linux Programming Interface.

The source code file is copyright 2024, Michael Kerrisk, and is licensed under the GNU General Public License, version 3.

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Function list (Bold in this list means a function is not static)

#include <sched.h>
#include "tlpi_hdr.h"
main(int argc, char *argv[])
    int j, pol;
    struct sched_param sp;

    if (argc < 3 || strchr("rfobi", argv[1][0]) == NULL)
        usageErr("%s policy priority [pid...]\n"
                "    policy is 'r' (RR), 'f' (FIFO), "
#ifdef SCHED_BATCH              /* Linux-specific */
                "'b' (BATCH), "
#ifdef SCHED_IDLE               /* Linux-specific */
                "'i' (IDLE), "
                "or 'o' (OTHER)\n",

    pol = (argv[1][0] == 'r') ? SCHED_RR :
                (argv[1][0] == 'f') ? SCHED_FIFO :
                (argv[1][0] == 'b') ? SCHED_BATCH :
                (argv[1][0] == 'i') ? SCHED_IDLE :

    sp.sched_priority = getInt(argv[2], 0, "priority");

    for (j = 3; j < argc; j++)
        if (sched_setscheduler(getLong(argv[j], 0, "pid"), pol, &sp) == -1)



Download procpri/sched_set.c

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