National Instruments AutoCode NI MATRIX - Manual (Page 162)

Chapter 5 Generated Code Architecture
AutoCode Reference 5-54 ni.com
The first formal argument represents which processor the access is taking
place on. Processor numbers are 1-based. The second formal argument
represents the global reference number for which the variable block is
being accessed.
The following code uses the Enter_Shared_Varblk... syntax to call
shared variable block generated code with callouts, using the -vbco option.
Enter_Shared_Varblk_Section(1, 4);
proc2_4_1 = block5[0];
proc2_4_2 = block5[1];
Leave_Shared_Varblk_Section(1, 4);
Entering with Extended Procedure Info Option Specified
The prototype of the callout for entering a shared variable block critical
section with the extended procedure info option is:
void Enter_Shared_Varblk_Section(RT_INTEGER index, RT_INTEGER caller_id);
procedure Enter_Shared_Varblk_Section(index : RT_INTEGER;
caller_id : RT_INTEGER);
The formal argument, index , represents the global reference number for
which the variable block is being accessed. The second formal argument,
caller_id , represents a unique identifier for the caller.
Note A default implementation is not provided for these callouts.
Leaving with Extended Procedure Info Option Specified
The prototype of the callout for leaving a shared variable block critical
section with the extended procedure info option is:
void Leave_Shared_Varblk_Section(RT_INTEGER index, RT_INTEGER caller_id);
procedure Leave_Shared_Varblk_Section(index : RT_INTEGER;
caller_id : RT_INTEGER);
The first formal argument represents the global reference number for which
the variable block is being accessed. The second formal argument,
caller_id , represents a unique identifier for the caller.
Note A default implementation is not provided for these callouts.