extconf.rb

require 'mkmf'
$CFLAGS << ' -O3 '
$CFLAGS << ' -std=c99'
create_makefile('rotate')

rotate.h

#ifndef ROTATE_H
#define ROTATE_H
/* Nothing to expose */
#endif

rotate.c

#include "rotate.h"
#include <ruby.h>
#include <stdint.h>
#ifdef __x86_64__
#ifdef __linux__
#include <x86intrin.h>
#endif
#endif
/* Support more arch/cc if you want */

static VALUE rb_mRotate;
static VALUE rb_mRotate_Native;
static VALUE rb_mRotate_Native_U64;

static VALUE rotate_native_u64_rb_left(VALUE self, VALUE src, VALUE bits);

void Init_rotate(void)
{
    rb_mRotate = rb_define_module("Rotate");
    rb_mRotate_Native = rb_define_module_under(rb_mRotate, "Native");
    rb_mRotate_Native_U64 = rb_define_module_under(rb_mRotate_Native, "U64");
    rb_define_module_function(rb_mRotate_Native_U64, "left", rotate_native_u64_rb_left, 2);
}

static VALUE rotate_native_u64_rb_left(VALUE self, VALUE src, VALUE rot)
{
    uint64_t source = NUM2ULL(src);
    uint64_t rotate = NUM2ULL(rot);

    return ULL2NUM(__rolq(source, rotate));
}

Run ruby extconf.rb && make

test.rb

require_relative 'rotate'

puts Rotate::Native::U64.left(1,63)
# => 9223372036854775808
puts Rotate::Native::U64.left(1,64)
# => 1

逃

Intel Xeon E5-2680v2, Ivy Bridge, 20C/40T

32G DRAM

5.10.0-3-amd64 #1 SMP Debian 5.10.12-1 (2021-01-30) x86_64 GNU/Linux

Ruby 3.0.0

正常运行

require 'digest/md5'
e = (1..1_000_000).to_a
arr = [e,e,e,e]

result = arr.map { |sub_arr|
  Ractor.new(sub_arr) do |sub_arr|
    sub_arr.map {
      Digest::MD5.hexdigest(rand.to_s)
    }
  end
}.map{|r| r.take}.reduce(:+)