apt/apt-pkg/cacheiterators.h, branch 1.2.6Debians commandline package managerhttps://git.kalnischkies.de/apt/atom?h=1.2.62016-01-07T18:59:08ZSwitch performance critical code to use APT::StringView2016-01-07T18:59:08ZJulian Andres Klodejak@debian.org2016-01-07T18:16:23Zurn:sha1:eff0c22e59e65b6b63e854ff41eb091278e05714
This improves performance of the cache generation on my
ARM platform (4x Cortex A15) by about 10% to 20% from
2.35-2.50 to 2.1 seconds.
add messages to our deprecation warnings in libapt2015-11-27T14:40:47ZDavid Kalnischkiesdavid@kalnischkies.de2015-11-27T14:40:47Zurn:sha1:5dd00edbcf702cac1ea22392796c65881a8ef6f9
Git-Dch: Ignore
fix various typos reported by codespell2015-08-27T09:27:44ZDavid Kalnischkiesdavid@kalnischkies.de2015-08-22T14:22:08Zurn:sha1:3a8776a37af38127fb04565959e8e0e449eb04a4
Reported-By: codespell
Drop the Section field from pkgCache::Package again2015-08-12T21:45:17ZJulian Andres Klodejak@debian.org2015-08-12T21:44:33Zurn:sha1:a1dfe33790edda246a23a5c5d3c432cd8429e848
This somehow got back, we don't really know why. Emulate the
Section() method in the PkgIterator by looking at the section
of the head of the VersionList.
Drop C++11 elements from headers2015-08-11T11:59:15ZJulian Andres Klodejak@debian.org2015-08-11T09:49:21Zurn:sha1:350d30d24fee9a1aa5fedc7a30e7416999653417hide implicit deps in apt-cache again by default2015-08-10T15:27:58ZDavid Kalnischkiesdavid@kalnischkies.de2015-07-16T09:15:25Zurn:sha1:8c7af4d4c95d0423fbd0f3baa979792504f4f45f
Before MultiArch implicits weren't a thing, so they were hidden by
default by definition. Adding them for MultiArch solved many problems,
but having no reliable way of detecting which dependency (and provides)
is implicit or not causes problems everytime we want to output
dependencies without confusing our observers with unneeded
implementation details.
The really notworthy point here is actually that we keep now a better
record of how a dependency came to be so that we can later reason about
it more easily, but that is hidden so deep down in the library internals
that change is more the problems it solves than the change itself.
remove the compatibility markers for 4.13 abi2015-08-10T15:27:58ZDavid Kalnischkiesdavid@kalnischkies.de2015-07-15T11:21:21Zurn:sha1:4dc77823d360158d6870a5710cc8c17064f1308f
We aren't and we will not be really compatible again with the previous
stable abi, so lets drop these markers (which never made it into a
released version) for good as they have outlived their intend already.
Git-Dch: Ignore
link DependencyData structs together2015-08-10T15:27:58ZDavid Kalnischkiesdavid@kalnischkies.de2015-07-14T11:41:11Zurn:sha1:b291aa59ee63983204d8aeb166c388b1f97edce7
Cache generation needs a way of quickly iterating over the unique potion
of the dependencies to be able to share them. By linking them together
we can reduce the speed penality (~ 80%) with only a small reduction in
saved size (~ 20%).
Git-Dch: Ignore
split-up Dependency struct2015-08-10T15:27:18ZDavid Kalnischkiesdavid@kalnischkies.de2015-07-13T14:28:21Zurn:sha1:71c9e95b223517b5f51c4627f6ad4cce8af0d901
Having dependency data separated from the link between version/package
and the dependency allows use to work on sharing the depdency data a bit
as it turns out that many dependencies are in fact duplicates. How many
are duplicates various heavily with the sources configured, but for a
single Debian release the ballpark is 2 duplicates for each dependency
already (e.g. libc6 counts 18410 dependencies, but only 45 unique). Add
more releases and the duplicates count only rises to get ~6 for 3
releases. For each architecture a user has configured which given the
shear number of dependencies amounts to MBs of duplication.
We can cut down on this number, but pay a heavy price for it: In my
many releases(3) + architectures(3) test we have a 10% (~ 0.5 sec)
increase in cache creationtime, but also 10% less cachesize (~ 10 MB).
Further work is needed to rip the whole benefits from this through, so
this is just the start.
Git-Dch: Ignore
avoid virtual in the iterators2015-08-10T15:27:18ZDavid Kalnischkiesdavid@kalnischkies.de2015-07-13T21:10:53Zurn:sha1:3707fd4faab3f2e2521263070b68fd0afaae2900
With a bit of trickery and the Curiously recurring template pattern we
can free us from our use of virtual in the iterators were it is unneeded
bloat as we never deal with pointers to iterators and similar such.
Git-Dch: Ignore