dmiller 56f59de131 Optimizations for IPv4 OS scan ...

Since the number, names, and preferred order of OS detection tests are
known, we can use fixed indices to put each test/value type in a
predictable location. Previously, we would insert the tests in an
arbitrary order, sort them, and then use strcmp() in each comparison to
ensure the sort order holds and any missing tests are skipped over.

Keeping test names in one location (MatchPoints) saves memory and keeps
the string pool small, which improves performance by reducing lookups
and making existing lookups faster.

Using a dedicated class (FingerPrintDef) for MatchPoints avoids calling
strtol() to obtain the points value for every comparison.

2022-11-11 18:44:19 +00:00

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