sched_rr_get_interval Subroutine
Purpose
Gets the execution time limits.
Library
Standard C Library (libc.a)
Syntax
#include <sched.h>
int sched_rr_get_interval (pid, interval)
pid_t pid;
struct timespec *interval;Description
The sched_rr_get_interval subroutine updates the timespec structure referenced by the interval parameter to contain the current execution time limit for the process specified by the pid parameter.
The current execution time limit applies to process made of system-scope pthreads only, and it is the value of the timeslice tunable for the process specified.
If value of the pid parameter is zero, the current execution time limit for the calling process is returned.
Parameters
| Item | Description |
|---|---|
| pid | Specifies the process for which the current execution time limit is retrieved. |
| interval | Points to the timespec structure to be updated. |
Return Values
If successful, the sched_rr_get_interval subroutine returns zero. Otherwise, it returns -1 and sets errno to indicate the error.
Error Codes
The sched_rr_get_interval subroutine fails if:
| Item | Description |
|---|---|
| EINVAL | The param parameter is null or a bad address. |
| ENOTSUP | This interface does not support processes capable of checkpoint. |
| ESRCH | The pid parameter is negative, or no process can be found that corresponds to the one specified by the pid parameter. |