1PTHREAD_SETSCHEDPRIO(3)    Linux Programmer's Manual   PTHREAD_SETSCHEDPRIO(3)
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NAME

6       pthread_setschedprio - set scheduling priority of a thread
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SYNOPSIS

9       #include <pthread.h>
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11       int pthread_setschedprio(pthread_t thread, int prio);
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13       Compile and link with -pthread.
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DESCRIPTION

16       The pthread_setschedprio() function sets the scheduling priority of the
17       thread  thread  to  the  value  specified  in   prio.    (By   contrast
18       pthread_setschedparam(3)  changes both the scheduling policy and prior‐
19       ity of a thread.)
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RETURN VALUE

22       On success, this function returns 0; on error, it returns a nonzero er‐
23       ror  number.   If pthread_setschedprio() fails, the scheduling priority
24       of thread is not changed.
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ERRORS

27       EINVAL prio is not valid for the scheduling  policy  of  the  specified
28              thread.
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30       EPERM  The caller does not have appropriate privileges to set the spec‐
31              ified priority.
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33       ESRCH  No thread with the ID thread could be found.
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35       POSIX.1 also documents an ENOTSUP ("attempt was made to set the  prior‐
36       ity to an unsupported value") error for pthread_setschedparam(3).
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VERSIONS

39       This function is available in glibc since version 2.3.4.
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ATTRIBUTES

42       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
43       tributes(7).
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45       ┌────────────────────────────────────────────┬───────────────┬─────────┐
46       │Interface                                   │ Attribute     │ Value   │
47       ├────────────────────────────────────────────┼───────────────┼─────────┤
48       │pthread_setschedprio()                      │ Thread safety │ MT-Safe │
49       └────────────────────────────────────────────┴───────────────┴─────────┘
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CONFORMING TO

52       POSIX.1-2001, POSIX.1-2008.
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NOTES

55       For a description of the permissions required to, and  the  effect  of,
56       changing  a  thread's scheduling priority, and details of the permitted
57       ranges for priorities in each scheduling policy, see sched(7).
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SEE ALSO

60       getrlimit(2), sched_get_priority_min(2), pthread_attr_init(3),
61       pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3),
62       pthread_attr_setschedpolicy(3), pthread_create(3), pthread_self(3),
63       pthread_setschedparam(3), pthreads(7), sched(7)
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COLOPHON

66       This page is part of release 5.12 of the Linux man-pages project.  A
67       description of the project, information about reporting bugs, and the
68       latest version of this page, can be found at
69       https://www.kernel.org/doc/man-pages/.
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73Linux                             2021-03-22           PTHREAD_SETSCHEDPRIO(3)
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