schedule.h File Reference

Kernel scheduling API. More...

Functions
struct dcb *	schedule (void)
	Scheduler policy. More...
void	scheduler_remove (struct dcb *dcb)
	Remove 'dcb' from scheduler ring. More...
void	scheduler_yield (struct dcb *dcb)
	Yield 'dcb' for the rest of the current timeslice. More...

Detailed Description

Kernel scheduling API.

Function Documentation

struct dcb* schedule

(

void

)

Scheduler policy.

Returns

Next DCB to schedule or NULL if wait for interrupts.

void scheduler_remove

(

struct dcb *

dcb

)

Remove 'dcb' from scheduler ring.

Removes dispatcher 'dcb' from the scheduler ring. If it was not in the ring, this function is a no-op. The postcondition for this function is that dcb is not in the ring.

Parameters

dcb	Pointer to DCB to remove.

Opposite of make_runnable.

Removes dispatcher 'dcb' from the scheduler ring. If it was not in the ring, this function is a no-op. The postcondition for this function is that dcb is not in the ring.

Parameters

dcb	Pointer to DCB to remove.

void scheduler_yield

(

struct dcb *

dcb

)

Yield 'dcb' for the rest of the current timeslice.

Re-sorts 'dcb' into the scheduler queue with its release time increased by the timeslice period. It is an error to yield a dispatcher not in the scheduler queue.

Parameters

dcb	Pointer to DCB to remove.