vrst_mpf

Outline

Reset fixed-sized memory pool.

C format

 ER      vrst_mpf (ID mpfid);
Parameter(s)

I/O

Parameter

Description

I

 ID      mpfid;
ID number of the fixed-sized memory pool.



Explanation

This service call reset the fixed-sized memory pool specified by parameter mpfid.

The tasks to wait to get memory block from the target fixed-sized memory pool are released from the WAITING state, and EV_RST is returned as a return value for the tasks.

Note 1 All fixed-sized memory blocks that had already been acquired are returned to the target fixed-sized memory pool. Therefore, do not access those fixed-sized memory blocks after issuing this service call.

Note 2 This service call is the function outside mITRON4.0 specification.

Return value

Macro

Value

Description

E_OK

0

Normal completion.

E_ID

-18

Invalid ID number.

- mpfid < 0

- mpfid > VTMAX_MPF

E_CTX

-25

Context error.

- This service call was issued from a non-task.

- This service call was issued in the CPU locked state.

- This service call was issued in the status "PSW.IPL > kernel interrupt mask level".