7510e597de
For a large module, opening the index was populating tables with entries for every package in the module. If we are only using a small number of those packages, this is wasted work that can dwarf the benefit from the index. This CL changes the index reader to avoid loading all packages at module index open time. It also refactors the code somewhat for clarity. It also removes some duplication by defining that a per-package index is a per-module index containing a single package, rather than having two different formats and two different decoders. It also changes the string table to use uvarint-prefixed data instead of having to scan for a NUL byte. This makes random access to long strings more efficient - O(1) instead of O(n) - and can significantly speed up the strings.Compare operation in the binary search looking for a given package. Also add a direct test of the indexing code. For #53577. Change-Id: I7428d28133e4e7fe2d2993fa014896cd15af48af Reviewed-on: https://go-review.googlesource.com/c/go/+/416178 Reviewed-by: Bryan Mills <bcmills@google.com> |
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README.md
The Go Programming Language
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