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The following shows the service calls provided by the RI600V4 as the system state management functions.

Table 18-14 System State Management Functions


Service Call	Function	Useful Range
rot_rdq	Rotate task precedence	Task
irot_rdq	Rotate task precedence	Non-task
get_tid	Reference task ID in the RUNNING state	Task
iget_tid	Reference task ID in the RUNNING state	Non-task
loc_cpu	Lock the CPU	Task
iloc_cpu	Lock the CPU	Non-task
unl_cpu	Unlock the CPU	Task
iunl_cpu	Unlock the CPU	Non-task
dis_dsp	Disable dispatching	Task
ena_dsp	Enable dispatching	Task
sns_ctx	Reference contexts	Task, Non-task
sns_loc	Reference CPU locked state	Task, Non-task
sns_dsp	Reference dispatching disabled state	Task, Non-task
sns_dpn	Reference dispatch pending state	Task, Non-task
vsys_dwn	System down	Task, Non-task
ivsys_dwn	System down	Task, Non-task
vsta_knl	Start RI600V4	Task, Non-task
ivsta_knl	Start RI600V4	Task, Non-task