Outline

Disable dispatching.

C format

ER dis_dsp ( void );

Assembly format

CALL !!_dis_dsp

Parameter(s)

None.

Explanation

This service call changes the system status to the dispatching disabled state.

As a result, dispatch processing (task scheduling) is disabled from when this service call is issued until ena_dsp is issued.

If a service call (chg_pri, sig_sem, etc.) accompanying dispatch processing is issued during the interval from when this service call is issued until ena_dsp is issued, the RI78V4 executes only processing such as queue manipulation, counter manipulation, etc., and the actual dispatch processing is delayed until ena_dsp is issued, upon which the actual dispatch processing is performed in batch.

Note 1 This service call does not perform queuing of disable requests. If the system is in the dispatching disabled state, therefore, no processing is performed but it is not handled as an error.

Note 2 The dispatching disabled state changed by issuing this service call must be cancelled before the task that issued this service call moves to the DORMANT state.

Return value

Macro	Value	Description
E_OK	0	Normal completion.