Accelerator Manual (G06.24+, H06.03+)

Preparing Your Program for the Accelerator

Accelerator Manual—527303-002

3-13

Procedure Name Conflicts

A program can call several procedures of the same name, as long as each of the

procedures resides in a different code space. For example, a program can call a

system library procedure named File_Close_ and a user library procedure named

File_Close_. Each of these procedures can have a different return value size. The

Accelerator must determine the return value size for all procedures called by a

program. When the Accelerator processes such a program, it resolves the name

conflict in favor of the system library procedure. This can result in an incorrectly

accelerated program. HP strongly recommends that you do not give your procedures

names that conflict with system procedure names.

Detection Guideline

•

The Accelerator issues Warnings 30, 31, or 32:

Warning 30: The ReturnValSize options given for the

following procedures conflict with the Binder region:

<proc name>; <value> given as an option;

<value> given in the Binder region

The Accelerator's translation is based on the option.

Warning 31: The ReturnValSize options given for the

following procedures conflict with the derived estimates:

<proc name>; <value> given as an option;

<value> derived by the Accelerator

The Accelerator's translation is based on the option.

Warning 32: The return value sizes derived for the

following procedures conflict with those given in the

Binder region:

<proc name>; <value 1> derived by the Accelerator;

<value 2> given in the Binder region

Acceleration is based on the Binder region; you can

override that value with a ReturnValSize option.

Required Change

•

Use the Accelerator ReturnValSize UNKNOWN:

ReturnValSize procedure-name UNKNOWN

where procedure-name is the name of the procedure, and UNKNOWN tells the

Accelerator to generate code that checks the return value size for each procedure

call at run time.

You must specify a ReturnValSize option for each procedure, using a scoping

directive to distinguish between the two procedures.