sched_getparam(3p) — Linux manual page

SCHED_GETPARAM(3P)      POSIX Programmer's Manual     SCHED_GETPARAM(3P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The
       Linux implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior),
       or the interface may not be implemented on Linux.

NAME         top

       sched_getparam — get scheduling parameters (REALTIME)

SYNOPSIS         top

       #include <sched.h>

       int sched_getparam(pid_t pid, struct sched_param *param);

DESCRIPTION         top

       The sched_getparam() function shall return the scheduling
       parameters of a process specified by pid in the sched_param
       structure pointed to by param.

       If a process specified by pid exists, and if the calling process
       has permission, the scheduling parameters for the process whose
       process ID is equal to pid shall be returned.

       If pid is zero, the scheduling parameters for the calling process
       shall be returned. The behavior of the sched_getparam() function
       is unspecified if the value of pid is negative.

RETURN VALUE         top

       Upon successful completion, the sched_getparam() function shall
       return zero. If the call to sched_getparam() is unsuccessful, the
       function shall return a value of -1 and set errno to indicate the
       error.

ERRORS         top

       The sched_getparam() function shall fail if:

       EPERM  The requesting process does not have permission to obtain
              the scheduling parameters of the specified process.

       ESRCH  No process can be found corresponding to that specified by
              pid.

       The following sections are informative.

EXAMPLES         top

       None.

APPLICATION USAGE         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       sched_getscheduler(3p), sched_setparam(3p),
       sched_setscheduler(3p)

       The Base Definitions volume of POSIX.1‐2017, sched.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  In the event of any
       discrepancy between this version and the original IEEE and The
       Open Group Standard, the original IEEE and The Open Group
       Standard is the referee document. The original Standard can be
       obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page
       are most likely to have been introduced during the conversion of
       the source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group               2017                SCHED_GETPARAM(3P)

Pages that refer to this page: sched.h(0p),  pthread_getschedparam(3p),  sched_get_priority_max(3p),  sched_getscheduler(3p),  sched_rr_get_interval(3p),  sched_setparam(3p),  sched_setscheduler(3p)

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