del_flg

Outline

Delete eventflag.

C format

 ER      del_flg (ID flgid);

Parameter(s)

I/O	Parameter	Description
I	ID flgid;	ID number of the eventflag.

Explanation

This service call can be called from tasks that belong to Trusted Domain.

This service call deletes the eventflag indicated by flgid.

When there are waiting tasks for the target eventflag by using wai_flg or twai_flg, this service call cancels the WAITING state of the tasks and returns E_DLT as a return value of the wai_flg or twai_flg.

Return value

Macro	Value	Description
E_OK	0	Normal completion.
E_ID	-18	Invalid ID number. - flgid < 0 - flgid > VTMAX_FLG
E_CTX	-25	Context error. - This service call was issued in the CPU locked state. - This service call was issued from non-task. - This service call was issued in the status "PSW.IPL > kernel interrupt mask level".
E_MACV	-26	Memory access violation. - Stack pointer points out of user stack for invoking task.
E_OACV	-27	Object access violation. - The invoking task does not belong to trusted domain.
E_NOEXS	-42	Non-existent object. - The eventflag specified by flgid does not exist.