sched.h File Reference

#include <sys/types.h>
#include <time.h>

Include dependency graph for sched.h:

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Functions
int	sched_get_priority_max (int policy)
	Return the maximum priority of the thread can be set. More...
int	sched_get_priority_min (int policy)
	Return the minimum priority of the thread can be set. More...
int	sched_rr_get_interval (pid_t pid, struct timespec *tp)
	Write the round-robin time quantum of the scheduler into the timespec structure pointed to by tp. More...
int	sched_yield (void)
	To cause the calling thread to relinquish the CPU. More...

Function Documentation

sched_get_priority_max()

int sched_get_priority_max ( int  policy )

inline

Return the maximum priority of the thread can be set.

Parameters

policy

The scheduling policy to provide. Currently, the system only supports SCHED_RR.

Return values

int	The maximum priority of the thread can be set.

sched_get_priority_min()

int sched_get_priority_min ( int  policy )

inline

Return the minimum priority of the thread can be set.

Parameters

policy

The scheduling policy to provide. Currently, the system only supports SCHED_RR.

Return values

int	The minimum priority of the thread can be set.

sched_rr_get_interval()

int sched_rr_get_interval	(	pid_t	pid,
		struct timespec *	tp
	)

Write the round-robin time quantum of the scheduler into the timespec structure pointed to by tp.

Parameters

pid	Not used (The whole system shares the same scheduling policy).
tp	The timespec structure to provide.

Return values

int	The minimum priority of the thread can be set.

sched_yield()

int sched_yield

(

void

)

To cause the calling thread to relinquish the CPU.

Return values

int	0 on success and nonzero error number on error.