Commits on Dec 25, 2020

1. Use glibc strlen to speed up xmlStrlen …

   Benchmark results:
   
   xmlStrlen (entire HTML file): 926171.936981 μs
   glibc_xmlStrlen (entire HTML file): 36905.903992 μs
   delta (xmlStrlen ÷ glibc_xmlStrlen): 25.094584 times
   
   xmlStrlen (average string): 57479.204010 μs
   glibc_xmlStrlen (average string): 5802.069000 μs
   delta (xmlStrlen ÷ glibc_xmlStrlen): 9.905937 times
   
   xmlStrlen (bigger string): 388056.315979 μs
   glibc_xmlStrlen (bigger string): 12797.856995 μs
   delta (xmlStrlen ÷ glibc_xmlStrlen): 30.318382 times
   
   xmlStrlen (smallest string): 15870.046021 μs
   glibc_xmlStrlen (smallest string): 6282.208984 μs
   delta (xmlStrlen ÷ glibc_xmlStrlen): 2.527903 times
   
   See https://gitlab.gnome.org/GNOME/libxml2/-/issues/212 for reference.

   

   ilyazub committed Dec 25, 2020
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