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ref_flg
iref_flg
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Reference eventflag state.
ER ref_flg (ID flgid, T_RFLG *pk_rflg);
ER iref_flg (ID flgid, T_RFLG *pk_rflg);
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ID flgid;
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ID number of the eventflag.
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T_RFLG *pk_rflg;
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Pointer to the packet returning the eventflag state.
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[Eventflag state packet: T_RFLG]
typedef struct t_rflg {
ID wtskid; /*Existence of waiting task*/
FLGPTN flgptn; /*Current bit pattern*/
} T_RFLG;
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Stores eventflag state packet (ID number of the task at the head of the wait queue, current bit pattern, etc.) of the eventflag specified by parameter
flgid in the area specified by parameter
pk_rflg.
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wtskid
Stores whether a task is queued to the event flag wait queue.
Value: ID number of the task at the head of the wait queue
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flgptn
Stores the current bit pattern.
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- This service call was issued in the CPU locked state.
- This service call was issued in the status "PSW.IPL > kernel interrupt mask level".
Note When the iref_flg is issued from task or the ref_flg is issued from non-task, the context error is not detected and normal operation of the system is not guaranteed.
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Memory access violation. (only for ref_flg)
- The operand-write access to the area indicated by pk_rflg has not been permitted to the invoking task.
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- The eventflag specified by flgid does not exist.
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