Content-type: text/html Man page of sched_rr_get_interval

sched_rr_get_interval

Section: C Library Functions (3)
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NAME

sched_rr_get_interval - Return the current quantum for process execution under the SCHED_RR policy (P1003.1b)  

SYNOPSIS

#include <sched.h>

int sched_rr_get_interval (
pid_t pid,
struct timespec *interval);  

PARAMETERS

pid
Specifies the process for which the quantum is returned.
*interval
The current quantum for process execution under the SCHED_RR scheduling policy.
 

DESCRIPTION

The sched_rr_get_interval function updates the timespec structure referenced by the interval argument to contain the current quantum for the process executing under the SCHED_RR policy. If a process, running under the round-robin scheduling policy, runs without blocking or yielding for more than this amount of time, it may be preempted by another runnable process (at the same priority).

If the PID argument is zero, the current execution time limit for the calling process is returned.

No special privileges are needed to use the sched_rr_get_interval function.  

RETURN VALUES

On a successful call, a value of 0 is returned. On an unsuccessful call, a value of -1 is returned and errno is set to indicate the error.  

ERRORS

The sched_rr_get_interval fails under the following condition:

[ESRCH]
The value of the pid parameter does not indicate an existing process.
 

RELATED INFORMATION

Functions: sched_getparam(3), sched_getscheduler(3), sched_setparam(3), sched_setscheduler(3) delim off


 

Index

NAME
SYNOPSIS
PARAMETERS
DESCRIPTION
RETURN VALUES
ERRORS
RELATED INFORMATION

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Time: 02:42:18 GMT, October 02, 2010