sched_getscheduler

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>


IEEE/The Open Group                  2003                SCHED_GETSCHEDULER(P)