/*
* Set task to non-executable state.
* Delete the task from the ready queue.
* If the deleted task is 'schedtsk', set 'schedtsk' to the
* highest priority task in the ready queue.
* 'tcb' task must be READY.
*/
EXPORT void make_non_ready( TCB *tcb )
{
ready_queue_delete(&ready_queue, tcb);
if ( schedtsk == tcb ) {
schedtsk = ready_queue_top(&ready_queue);
dispatch_request();
}
}
/*
* Dispatch enable
*/
SYSCALL ER _tk_ena_dsp( void )
{
CHECK_CTX(!in_loc());
BEGIN_CRITICAL_SECTION
dispatch_disabled[get_prid()] = DDS_ENABLE;
ready_queue_top(&ready_queue, schedtsk);
END_CRITICAL_SECTION
return E_OK;
}
/*
* Reselect task to execute
* Set 'schedtsk' to the head task at the ready queue.
*/
Inline void reschedule( void )
{
TCB *toptsk;
toptsk = ready_queue_top(&ready_queue);
if ( schedtsk != toptsk ) {
/*
* When the state becomes RUN to READY,
* execute the time slice scheduling.
*/
if ( schedtsk == ctxtsk ) {
time_slice_schedule(schedtsk);
}
schedtsk = toptsk;
dispatch_request();
}
}