centos man page for sched_getscheduler

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

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

NAME
       sched_getscheduler - get scheduling policy (REALTIME)

SYNOPSIS
       #include <sched.h>

       int sched_getscheduler(pid_t pid);

DESCRIPTION
       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
       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
       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
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       sched_getparam(), sched_setparam(), sched_setscheduler(), the Base Definitions volume of IEEE Std 1003.1-2001, <sched.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 .

IEEE
/The Open Group						       2003						    SCHED_GETSCHEDULER(3P)