Guardian Programming Reference Summary for pTAL and TAL

Procedure Calls Summary (A-C)

Guardian Programming Reference Summary for pTAL and TAL—522631-001

4-22

CHECKPOINTMANY

(Superseded by CHECKPOINTMANYX) Is called by a primary process to send

information about the primary process’s current executing state to the backup process.

status, INT returned value

<0:7> =0 No error.

<0:7> =1 No backup, or CHECKPOINT cannot communicate with backup,

<8:15> = filesystem error number

<0:7> =2 Takeover from the primary,

<8:15> =0

The primary process stopped.

The primary process ended abnormally.

The processor running the primary process failed.

The primary process called CHECKSWITCH.

<0:7> =3 Illegal parameter,

<8:15> = The number of the parameter in error; the leftmost position

equals 1.

stack-base, INT:ref:* input

buffer-n, INT:ref:* input

count-n, INT:value input

status := CHECKPOINTMANY ( [ stack-base ]

,[ descriptors ] );