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dirkwhoffmann avatar dirkwhoffmann commented on June 19, 2024

I've setup an experimental version of vAmiga which declares readOp as a void function. If an address error occurs, an exception is thrown instead of returning false. Here are the results:

% ls -al vAmigaOld/.../vAmiga 
-rwxr-xr-x  1 Dirk  staff  11972496 22 Sep 12:54 vAmigaOld/.../vAmiga
% ls -al vAmigaExceptions/.../vAmiga
-rwxr-xr-x  1 Dirk  staff  11873760 22 Sep 13:24 vAmigaExceptions/.../vAmiga

The new executable is slightly smaller. This means the old executable had all the exception cleanup code already included. The size reduction is due to the removal of many If-statements which are no longer needed in the new code.

Bildschirmfoto 2022-09-22 um 13 26 32

Interestingly, the version using exceptions is slight slower. This is a surprise, because no exceptions are thrown and exception should come with zero-cost in this case. However, the slowdown is negligibly small. Nevertheless, I would have expected it the other ways round, because of many deleted If-statements.

Bottom line: Neither speed nor memory footprint are a show stopper here.

from moira.

dirkwhoffmann avatar dirkwhoffmann commented on June 19, 2024

Done. Seems to work well.

from moira.

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