apt/apt-pkg/pkgcachegen.h, branch 2.9.28

std::string_view const & -> std::string_view

2024-11-14T17:41:26Z

Fixes: 2c03eed649068c8838d971ceeb1a09603dcc8e9c

apt-pkg/pkgcachegen.cc, apt-pkg/pkgcachegen.h: APT::StringView -> std::string_view

2024-11-12T19:36:20Z

apt-pkg/edsp/edsplistparser.cc: APT::StringView -> std::string_view

2024-11-12T19:36:16Z

Compare SHA256 to check if versions are really the same

2023-08-02T10:04:32Z

If we know both SHA256, and they're different, the packages are. This approach stores the SHA256 only at runtime, avoiding the overhead of storing it on-disk, because when we update repositories we update all of them anyhow. Note that pkgCacheGenerator is hidden, so we can just modify its ABI, hooray. Closes: #931175 LP: #2029268

Avoid undefined pointer arithmetic while growing mmap

2021-02-04T10:00:00Z

The undefined behaviour sanitizer complains with: runtime error: addition of unsigned offset to 0x… overflowed to 0x… Compilers and runtime do the right thing in any case and it is a codepath that can (and ideally should) be avoided for speed reasons alone, but fixing it can't hurt (too much).

Do not require libxxhash-dev for including pkgcachegen.h

2020-12-17T15:20:48Z

Use XXH3 for cache, hash table hashing

2020-12-15T12:47:22Z

XXH3 is faster than both our CRC32c implementation as well as DJB hash for hash table hashing, so meh, let's switch to it.

Make map_pointer typesafe

2020-02-24T17:29:07Z

Instead of just using uint32_t, which would allow you to assign e.g. a map_pointer to a map_pointer, use our own smarter struct that has strict type checking. We allow creating a map_pointer from a nullptr, and we allow comparing map_pointer to nullptr, which also deals with comparisons against 0 which are often used, as 0 will be implictly converted to nullptr.

Wrap AllocateInMap with a templated version

2020-02-24T17:09:49Z

Replace map_pointer_t with map_pointer

2020-02-24T16:08:34Z

This is a first step to a type safe cache, adding typing information everywhere. Next, we'll replace map_pointer implementation with a type safe one.