class Jemalloc < Formula
  desc "malloc implementation emphasizing fragmentation avoidance"
  homepage "http://jemalloc.net/"
  url "https://github.com/jemalloc/jemalloc/releases/download/5.2.0/jemalloc-5.2.0.tar.bz2"
  sha256 "74be9f44a60d2a99398e706baa921e4efde82bf8fd16e5c0643c375c5851e3b4"

  bottle do
    cellar :any
    sha256 "65f360353caa81de08b1b1882de13e8423d0f72d92a67bb3a8cfd7ce71f39c71" => :mojave
    sha256 "9c0d0531d6da443ae28a585f23b6f959383c6c92e37c7db9287ba59c6b91bfc9" => :high_sierra
    sha256 "6713d3ff6d14a6c924bde3f05e41cb290c90f0a435b2fb5df07be5b466e8475e" => :sierra
  end

  head do
    url "https://github.com/jemalloc/jemalloc.git", :branch => "dev"

    depends_on "autoconf" => :build
    depends_on "docbook-xsl" => :build
  end

  def install
    args = %W[
      --disable-debug
      --prefix=#{prefix}
      --with-jemalloc-prefix=
    ]

    if build.head?
      args << "--with-xslroot=#{Formula["docbook-xsl"].opt_prefix}/docbook-xsl"
      system "./autogen.sh", *args
      system "make", "dist"
    else
      system "./configure", *args
    end

    system "make"
    system "make", "check"
    system "make", "install"
  end

  test do
    (testpath/"test.c").write <<~EOS
      #include <stdlib.h>
      #include <jemalloc/jemalloc.h>

      int main(void) {

        for (size_t i = 0; i < 1000; i++) {
            // Leak some memory
            malloc(i * 100);
        }

        // Dump allocator statistics to stderr
        malloc_stats_print(NULL, NULL, NULL);
      }
    EOS
    system ENV.cc, "test.c", "-L#{lib}", "-ljemalloc", "-o", "test"
    system "./test"
  end
end