sched.h File Reference

Structures and functions for managing the scheduler. More...

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Classes
struct	sched_param
	Structure that describes scheduling parameters. More...

Typedefs
typedef struct sched_param	sched_param_t
	Structure that describes scheduling parameters.

Functions
int	sched_setparam (pid_t pid, const sched_param_t *param)
	Sets scheduling parameters. More...
int	sched_getparam (pid_t pid, sched_param_t *param)
	Gets scheduling parameters. More...
int	waitperiod (void)
	Placed at the end of an infinite while loop, stops the process until, its next period starts. The calling process must be a periodic one. More...

Detailed Description

Structures and functions for managing the scheduler.

Copyright

(c) 2014-2024 This file is distributed under the MIT License. See LICENSE.md for details.

Function Documentation

sched_getparam()

int sched_getparam	(	pid_t	pid,
		sched_param_t *	param
	)

Gets scheduling parameters.

Parameters

pid	pid of the process we want to retrieve the parameters. If zero, then the parameters of the calling process are returned.
param	The interpretation of the argument param depends on the scheduling policy of the thread identified by pid.

Returns

0 on success, -1 on failure and errno is set to indicate the error.

sched_setparam()

int sched_setparam	(	pid_t	pid,
		const sched_param_t *	param
	)

Sets scheduling parameters.

Parameters

pid	pid of the process we want to change the parameters. If zero, then the parameters of the calling process are set.
param	The interpretation of the argument param depends on the scheduling policy of the thread identified by pid.

Returns

0 on success, -1 on failure and errno is set to indicate the error.

waitperiod()

int waitperiod

(

void

)

Placed at the end of an infinite while loop, stops the process until, its next period starts. The calling process must be a periodic one.

Returns

0 on success, -1 on failure and errno is set to indicate the error.