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{ lib
, stdenv
, fetchurl
, fetchpatch
# By default, jemalloc puts a je_ prefix onto all its symbols on OSX, which
# then stops downstream builds (mariadb in particular) from detecting it. This
# option should remove the prefix and give us a working jemalloc.
# Causes segfaults with some software (ex. rustc), but defaults to true for backward
# compatibility.
, stripPrefix ? stdenv.hostPlatform.isDarwin
, disableInitExecTls ? false
}:
stdenv.mkDerivation rec {
pname = "jemalloc";
version = "5.2.1";
src = fetchurl {
url = "https://github.com/jemalloc/jemalloc/releases/download/${version}/${pname}-${version}.tar.bz2";
sha256 = "1xl7z0vwbn5iycg7amka9jd6hxd8nmfk7nahi4p9w2bnw9f0wcrl";
};
patches = [
# workaround https://github.com/jemalloc/jemalloc/issues/2091
(fetchpatch {
url = "https://github.com/jemalloc/jemalloc/commit/3b4a03b92b2e415415a08f0150fdb9eeb659cd52.diff";
sha256 = "sha256-6AYtADREhfj93ZLk9xnXtjc6vHDU0EKLLOvLd6YdJeI=";
})
];
# see the comment on stripPrefix
configureFlags = []
++ lib.optional stripPrefix "--with-jemalloc-prefix="
++ lib.optional disableInitExecTls "--disable-initial-exec-tls"
# jemalloc is unable to correctly detect transparent hugepage support on
# ARM (https://github.com/jemalloc/jemalloc/issues/526), and the default
# kernel ARMv6/7 kernel does not enable it, so we explicitly disable support
++ lib.optionals (stdenv.isAarch32 && lib.versionOlder version "5") [
"--disable-thp"
"je_cv_thp=no"
]
;
doCheck = true;
enableParallelBuilding = true;
meta = with lib; {
homepage = "http://jemalloc.net";
description = "General purpose malloc(3) implementation";
longDescription = ''
malloc(3)-compatible memory allocator that emphasizes fragmentation
avoidance and scalable concurrency support.
'';
license = licenses.bsd2;
platforms = platforms.all;
};
}
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