zig-jemalloc

#+TITLE: zig-jemalloc #+DATE: 2024-04-03T16:31:20+0800 #+LASTMOD: 2024-10-16T08:45:54+0800 #+AUTHOR: Jiacai Liu

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Zig allocator backed by [[https://jemalloc.net/][jemalloc]].

• Usage #+begin_src shell zig fetch —save=jemalloc https://github.com/jiacai2050/zig-jemalloc/archive/${COMMIT}.tar.gz #+end_src

Replace ${COMMIT} with a real one, then in your =build.zig=, import the module like this: #+begin_src zig const dep_jemalloc = b.dependency(“jemalloc”, .{}); exe.root_module.addImport(“jemalloc”, dep_jemalloc.module(“jemalloc”)); exe.linkLibC(); #+end_src

This library will link to vendored [[https://github.com/jemalloc/jemalloc/releases/tag/5.3.0][jemalloc(5.3.0)]] by default, you can disable this feature and link to the system-wide version using: #+begin_src zig const dep_jemalloc = b.dependency(“jemalloc”, .{ .link_vendor = false }); // Install jemalloc with system package manager, such as // brew install jemalloc // sudo apt-get install libjemalloc-dev exe.linkSystemLibrary(“jemalloc”); exe.linkLibC(); #+end_src

Then in you =main.zig=, initialize like this:

#+begin_src zig const jemalloc = @import(“jemalloc”); const allocator = jemalloc.allocator; #+end_src