This adds the entirety of the highwayhash implementation of Google.
This includes siphash as well as severl highwayhash variants - which
are faster.
This first commit only switches out the siphash implementation. All
hashes that are generated are exactly the same as before. However, this
does make all other hashes available to be used by us.
I did some performance tests vs the previous siphash implementation by
running the 2009-M57-day11-18 trace 100x through both cases. The average
runtime was virtually the same (within 0.014 seconds of each other).
Note that the way that I included the highwayhash implementation in our
cmake setup is... well, let's say hacky. This definitely needs to be
changed a bit before including this in a real build.
- Minor cleanups in siphash24.h (code style, header include)
- Updated COPYING.3rdparty with new license info
* origin/topic/timw/faster-hashing:
Add a faster siphash24 implementation than the reference one
- Removes entire FindSoonest method that includes all of the calls to select() for checking for ready sources
- Removes FD_Set checking against IOSources
- Adds system for registering and unregistering file descriptors from IOSources. This allows individual sources to mark themselves as ready to be checked by the loop as they become available.
- Adds entirely new loop architecture based on checking the IOSources for when their next timeout is, and then waiting for either that timeout or when the next source is ready. This also implements the polling based on what the OS supports, instead of just calling select() on all platforms. Currently it supports kqueue, epoll, and plain poll.
- Adds system for pinging the loop to force it to wake up
Tweaks:
- Small change to the logic for removing quotes around strings.
- Updated NEWS & COPYING.3rdparty
- Use of intrusive_ptr for stack-allocated StringVals
- Little bit of refactoring (I would love to merge the two BuildJSON() functions, too, but that's a larger task)
* origin/topic/timw/595-rapidjson:
Use the list of files from clang-tidy when searching for unit tests
Optimize json_escape_utf8 a bit by removing repeated calls to string methods
Expand unit test for json_escape_utf8 to include all of the strings from the ascii-json-utf8 btest
GHI-595: Convert from nlohmann/json to rapidjson for performance reasons
Convert type-checking macros to actual functions
I prefixed the software names with '%%%' to make them easier to find
in the file.
* origin/topic/johanna/3rdparty-licenses:
Add a license file with all third party software licenses.
