Author: Matt Taylor
Date: 23:49:04 02/19/03
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On February 19, 2003 at 20:05:30, Robert Hyatt wrote: >On February 19, 2003 at 18:28:12, Charles Worthington wrote: > >>Bob I am not a programmer. Can you direct me to a source that will enable me to >>make the tweaks on the Fritz Spinlocks and Spinwaits myself? Getting chessbase >>to do anything would be near impossible. > > >No. It is a source code modification, which is the problem. You _might_ be >able to use a debugger and find the spinlocks, but inserting a pause instruction >might not be possible as it will mean "stretching" the code which would break >things without some cute tricks, such as a jump out to the lock and a jump >back... > >I wouldn't want to think about it not having any idea where the locks really >are. :) It wouldn't be too difficult with a good knowledge of assembly and some good tools. Profile for highly localized hotspots (there are your spinlocks) and then use code stretching to insert code. I wrote a tool at work that does this for Windows programs, but it requires PDB information. I know of no tool on the market that is capable of code stretching without such information. Realistically he might as well ask nicely. :-) -Matt
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