PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

SCHED_GETSCHEDULER(3P)    POSIX Programmer's Manual   SCHED_GETSCHEDULER(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_getscheduler — get scheduling policy (REALTIME)

SYNOPSIS         top

       #include <sched.h>

       int sched_getscheduler(pid_t pid);

DESCRIPTION         top

       The sched_getscheduler() function shall return the scheduling policy
       of the process specified by pid.  If the value of pid is negative,
       the behavior of the sched_getscheduler() function is unspecified.

       The values that can be returned by sched_getscheduler() are defined
       in the <sched.h> header.

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

       If pid is zero, the scheduling policy shall be returned for the
       calling process.

RETURN VALUE         top

       Upon successful completion, the sched_getscheduler() function shall
       return the scheduling policy of the specified process.  If
       unsuccessful, the function shall return −1 and set errno to indicate
       the error.

ERRORS         top

       The sched_getscheduler() function shall fail if:

       EPERM  The requesting process does not have permission to determine
              the scheduling policy 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_getparam(3p), sched_setparam(3p), sched_setscheduler(3p)

       The Base Definitions volume of POSIX.1‐2008, sched.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) 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.unix.org/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                 2013              SCHED_GETSCHEDULER(3P)

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