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5.12 System Status Management Function
Table 5.23 List of System Status Management Function Service Call
System State
No. Service
Call
Function
T
N
E
D
U
L
1 rot_rdq
[S][B]
O
O O
O
2 irot_rdq
[S][B]
Rotates task precedence
O O O
O
3 get_tid
[S][B]
O
O O
O
4 iget_tid
[S]
References task ID in the RUNNING state
O O O
O
5 loc_cpu
[S][B]
O
O O
O
O
6 iloc_cpu
[S]
Locks the CPU
O O O
O
O
7 unl_cpu
[S][B]
O
O O
O
O
8 iunl_cpu
[S]
Unlocks the CPU
O O O
O
O
9 dis_dsp
[S][B]
Disables dispatching
O
O
O
O
10 ena_dsp
[S][B]
Enables dispatching
O
O
O
O
11 sns_ctx
[S]
References context
O
O
O
O
O
12 sns_loc
[S]
References CPU state
O
O
O
O
O
13 sns_dsp
[S]
References dispatching state
O
O
O
O
O
14 sns_dpn
[S]
References dispatching pending state
O
O
O
O
O
Notes:
•
[S]: Standard profile service calls
[B]: Basic profile service calls
•
Each sign within " System State " is a following meaning.
♦
T: Can be called from task context
♦
N: Can be called from non-task context
♦
E: Can be called from dispatch-enabled state
♦
D: Can be called from dispatch-disabled state
♦
U: Can be called from CPU-unlocked state
♦
L: Can be called from CPU-locked state
