Hello community, here is the log from the commit of package ghc-hashtables for openSUSE:Factory checked in at 2016-07-21 08:14:07 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Comparing /work/SRC/openSUSE:Factory/ghc-hashtables (Old) and /work/SRC/openSUSE:Factory/.ghc-hashtables.new (New) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Package is "ghc-hashtables" Changes: -------- --- /work/SRC/openSUSE:Factory/ghc-hashtables/ghc-hashtables.changes 2015-11-23 07:30:25.000000000 +0100 +++ /work/SRC/openSUSE:Factory/.ghc-hashtables.new/ghc-hashtables.changes 2016-07-21 08:14:09.000000000 +0200 @@ -1,0 +2,5 @@ +Sun Jul 10 17:18:56 UTC 2016 - psimons@suse.com + +- Update to version 1.2.1.0 revision 0 with cabal2obs. + +------------------------------------------------------------------- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Other differences: ------------------ ++++++ ghc-hashtables.spec ++++++ --- /var/tmp/diff_new_pack.Uoiz0E/_old 2016-07-21 08:14:10.000000000 +0200 +++ /var/tmp/diff_new_pack.Uoiz0E/_new 2016-07-21 08:14:10.000000000 +0200 @@ -1,7 +1,7 @@ # # spec file for package ghc-hashtables # -# Copyright (c) 2015 SUSE LINUX GmbH, Nuernberg, Germany. +# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany. # # All modifications and additions to the file contributed by third parties # remain the property of their copyright owners, unless otherwise agreed @@ -17,24 +17,21 @@ %global pkg_name hashtables - -Name: ghc-hashtables +Name: ghc-%{pkg_name} Version: 1.2.1.0 Release: 0 Summary: Mutable hash tables in the ST monad License: BSD-3-Clause Group: System/Libraries - Url: https://hackage.haskell.org/package/%{pkg_name} Source0: https://hackage.haskell.org/package/%{pkg_name}-%{version}/%{pkg_name}-%{version}.tar.gz -BuildRoot: %{_tmppath}/%{name}-%{version}-build - BuildRequires: ghc-Cabal-devel -BuildRequires: ghc-rpm-macros # Begin cabal-rpm deps: BuildRequires: ghc-hashable-devel BuildRequires: ghc-primitive-devel +BuildRequires: ghc-rpm-macros BuildRequires: ghc-vector-devel +BuildRoot: %{_tmppath}/%{name}-%{version}-build # End cabal-rpm deps %description @@ -46,28 +43,94 @@ "Data.HashTable.Class" module, and the IO wrappers (which most users will probably prefer) are located in the "Data.HashTable.IO" module. +This package currently contains three hash table implementations: + +1. "Data.HashTable.ST.Cuckoo" contains an implementation of "cuckoo hashing" as +introduced by Pagh and Rodler in 2001 (see +http://en.wikipedia.org/wiki/Cuckoo_hashing). Cuckoo hashing has worst-case +/O(1)/ lookups and can reach a high "load factor", in which the table can +perform acceptably well even when approaching 90% full. Randomized testing +shows this implementation of cuckoo hashing to be slightly faster on insert and +slightly slower on lookup than "Data.Hashtable.ST.Basic", while being more +space efficient by about a half-word per key-value mapping. Cuckoo hashing, +like the basic hash table implementation using linear probing, can suffer from +long delays when the table is resized. + +2. "Data.HashTable.ST.Basic" contains a basic open-addressing hash table using +linear probing as the collision strategy. On a pure speed basis it should +currently be the fastest available Haskell hash table implementation for +lookups, although it has a higher memory overhead than the other tables and can +suffer from long delays when the table is resized because all of the elements +in the table need to be rehashed. + +3. "Data.HashTable.ST.Linear" contains a linear hash table (see +http://en.wikipedia.org/wiki/Linear_hashing), which trades some insert and +lookup performance for higher space efficiency and much shorter delays when +expanding the table. In most cases, benchmarks show this table to be currently +slightly faster than 'Data.HashTable' from the Haskell base library. + +It is recommended to create a concrete type alias in your code when using this +package, i.e.: + +> import qualified Data.HashTable.IO as H > > type HashTable k v = +H.BasicHashTable k v > > foo :: IO (HashTable Int Int) > foo = do > ht <- H.new +> H.insert ht 1 1 > return ht + +Firstly, this makes it easy to switch to a different hash table implementation, +and secondly, using a concrete type rather than leaving your functions abstract +in the HashTable class should allow GHC to optimize away the typeclass +dictionaries. + +This package accepts a couple of different cabal flags: + +* 'unsafe-tricks', default /ON/. If this flag is enabled, we use some unsafe +GHC-specific tricks to save indirections (namely 'unsafeCoerce#' and +'reallyUnsafePtrEquality#'. These techniques rely on assumptions about the +behaviour of the GHC runtime system and, although they've been tested and +should be safe under normal conditions, are slightly dangerous. Caveat emptor. +In particular, these techniques are incompatible with HPC code coverage +reports. + +* 'sse42', default /OFF/. If this flag is enabled, we use some SSE 4.2 +instructions (see http://en.wikipedia.org/wiki/SSE4, first available on Intel +Core 2 processors) to speed up cache-line searches for cuckoo hashing. + +* 'bounds-checking', default /OFF/. If this flag is enabled, array accesses are +bounds-checked. + +* 'debug', default /OFF/. If turned on, we'll rudely spew debug output to +stdout. + +* 'portable', default /OFF/. If this flag is enabled, we use only pure Haskell +code and try not to use unportable GHC extensions. Turning this flag on forces +'unsafe-tricks' and 'sse42' /OFF/. + +Please send bug reports to +https://github.com/gregorycollins/hashtables/issues. %package devel Summary: Haskell %{pkg_name} library development files Group: Development/Libraries/Other +Requires: %{name} = %{version}-%{release} Requires: ghc-compiler = %{ghc_version} Requires(post): ghc-compiler = %{ghc_version} Requires(postun): ghc-compiler = %{ghc_version} -Requires: %{name} = %{version}-%{release} %description devel This package provides the Haskell %{pkg_name} library development files. - %prep %setup -q -n %{pkg_name}-%{version} + %build %ghc_lib_build + %install %ghc_lib_install + %post devel %ghc_pkg_recache @@ -80,6 +143,6 @@ %files devel -f %{name}-devel.files %defattr(-,root,root,-) -%doc README.md +%doc README.md changelog.md %changelog