Hi,
To speed up reading of large (few million lines) CSV files I am writing
custom read functions (in C). By timing various approaches I figured out
that one of the bottlenecks in reading character fields is the mkChar()
function which on each call incurs a lot of garbage-collection-related
overhead.
I wonder if there is a "vectorized" version of mkChar, say mkChar2(char
**, int length) that converts an array of C strings to a string vector,
which somehow amortizes the gc overhead over the entire array?
If no such function exists, I'd appreciate any hint as to how to write
it.
Thanks,
Vadim
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