Improve perfomance by replacing sscanf with strto* functions#1074
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earnol wants to merge 1 commit into
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Improve perfomance by replacing sscanf with strto* functions#1074earnol wants to merge 1 commit into
earnol wants to merge 1 commit into
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*scanf functions are less efficient compared to specialized strto*. The replacement allowed to use shorter code and achive ~42% parsing performance boost from 2534ms to 1478ms on dream.xml example on average. This patch also addresses findings from bugprone-misplaced-widening-cast checker when run on library code.
Author
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Ping! |
Author
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And ping again. |
Author
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And ping! Still waiting for the review! |
Owner
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Much too modern code. TinyXML-2 is roughly C++ 99 and doesn't even use std / STL. It isn't worth changing that for a performance gain. |
Author
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Well. Performance gain can be achieved within C++ 99 too. Not that elegant, but still can be done with macros. Do you want me to update PR? |
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*scanf functions are less efficient compared to specialized strto* functions. The replacement allowed to use shorter code and achieve ~42% parsing performance boost from 2534ms to 1478ms on dream.xml example on average with -O2.
This patch also addresses findings from bugprone-misplaced-widening-cast checker when run on library code.