commit: 6acfa62b637a31df2582e1817c76fc7ce763e43b Author: Alessandro Barbieri <lssndrbarbieri <AT> gmail <DOT> com> AuthorDate: Sun May 2 01:31:46 2021 +0000 Commit: Alessandro Barbieri <lssndrbarbieri <AT> gmail <DOT> com> CommitDate: Sun May 2 01:51:05 2021 +0000 URL: https://gitweb.gentoo.org/repo/proj/guru.git/commit/?id=6acfa62b
dev-cpp/parallel-hashmap: new package Package-Manager: Portage-3.0.18, Repoman-3.0.3 Signed-off-by: Alessandro Barbieri <lssndrbarbieri <AT> gmail.com> dev-cpp/parallel-hashmap/Manifest | 1 + dev-cpp/parallel-hashmap/metadata.xml | 33 ++++++++++++++++ .../parallel-hashmap/parallel-hashmap-1.33.ebuild | 45 ++++++++++++++++++++++ 3 files changed, 79 insertions(+) diff --git a/dev-cpp/parallel-hashmap/Manifest b/dev-cpp/parallel-hashmap/Manifest new file mode 100644 index 000000000..da8d78b3e --- /dev/null +++ b/dev-cpp/parallel-hashmap/Manifest @@ -0,0 +1 @@ +DIST parallel-hashmap-1.33.tar.gz 2038996 BLAKE2B b704a0230bd6d15e8a3a1aa11bec456183119d5104e1ac191e556edae1c0b0d2a27c5b52c84cae167cd09a90f4fc43f817c21d64d6b288a70596b6495ee872e6 SHA512 287f098229153d925632e68e3cdbabfae0ea0ab8864089e4c0553a166c6079ca82ed5246ba53afd2a2917abcf06f37bc18f098e721f5f3b8def4d2d8c1c8c745 diff --git a/dev-cpp/parallel-hashmap/metadata.xml b/dev-cpp/parallel-hashmap/metadata.xml new file mode 100644 index 000000000..2609bf86a --- /dev/null +++ b/dev-cpp/parallel-hashmap/metadata.xml @@ -0,0 +1,33 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE pkgmetadata SYSTEM 'http://www.gentoo.org/dtd/metadata.dtd'> +<pkgmetadata> + <longdescription lang="en"> +Overview + +This repository aims to provide a set of excellent hash map implementations, as well as a btree alternative to std::map and std::set, with the following characteristics: + +Header only: nothing to build, just copy the parallel_hashmap directory to your project and you are good to go. + +drop-in replacement for std::unordered_map, std::unordered_set, std::map and std::set + +Compiler with C++11 support required, C++14 and C++17 APIs are provided (such as try_emplace) + +Very efficient, significantly faster than your compiler's unordered map/set or Boost's, or than sparsepp + +Memory friendly: low memory usage, although a little higher than sparsepp + +Supports heterogeneous lookup + +Easy to forward declare: just include phmap_fwd_decl.h in your header files to forward declare Parallel Hashmap containers [note: this does not work currently for hash maps with pointer keys] + +Dump/load feature: when a flat hash map stores data that is std::trivially_copyable, the table can be dumped to disk and restored as a single array, very efficiently, and without requiring any hash computation. This is typically about 10 times faster than doing element-wise serialization to disk, but it will use 10% to 60% extra disk space. See examples/serialize.cc. (flat hash map/set only) + +Automatic support for boost's hash_value() method for providing the hash function (see examples/hash_value.h). Also default hash support for std::pair and std::tuple. + +natvis visualization support in Visual Studio (hash map/set only) + </longdescription> + <upstream> + <bugs-to>https://github.com/greg7mdp/parallel-hashmap/issues</bugs-to> + <remote-id type="github">greg7mdp/parallel-hashmap</remote-id> + </upstream> +</pkgmetadata> diff --git a/dev-cpp/parallel-hashmap/parallel-hashmap-1.33.ebuild b/dev-cpp/parallel-hashmap/parallel-hashmap-1.33.ebuild new file mode 100644 index 000000000..4aecefcc6 --- /dev/null +++ b/dev-cpp/parallel-hashmap/parallel-hashmap-1.33.ebuild @@ -0,0 +1,45 @@ +# Copyright 1999-2021 Gentoo Authors +# Distributed under the terms of the GNU General Public License v2 + +EAPI=7 + +inherit cmake + +DESCRIPTION="A family of header-only, very fast and memory-friendly hashmap and btree containers." +HOMEPAGE=" + https://greg7mdp.github.io/parallel-hashmap/ + https://github.com/greg7mdp/parallel-hashmap +" +SRC_URI="https://github.com/greg7mdp/parallel-hashmap/archive/refs/tags/${PV}.tar.gz -> ${P}.tar.gz" + +LICENSE="Apache-2.0" +SLOT="0" +KEYWORDS="~amd64" +IUSE="examples" + +DEPEND="" +RDEPEND="${DEPEND}" +#BDEPEND=" +# doc? ( app-text/pandoc ) +#" + +#TODO: explore the various cmake options (if any) +#TODO: tests, doc + +src_compile() { + cmake_src_compile + + #waiting for https://github.com/greg7mdp/parallel-hashmap/issues/91 +# if use doc ; then +# cd html || die +# emake all +# fi +} + +src_install() { + cmake_src_install + if use examples ; then + dodoc -r examples + docompress -x "/usr/share/doc/${PF}/examples" + fi +}
