Modernize gem.

.github/workflows/test-coverage.yaml

@@ -38,6 +38,8 @@ jobs:
 
     - uses: actions/upload-artifact@v4
       with:
+        include-hidden-files: true
+        if-no-files-found: error
         name: coverage-${{matrix.os}}-${{matrix.ruby}}
         path: .covered.db
 

.rubocop.yml

@@ -47,3 +47,7 @@ Layout/EmptyLinesAroundModuleBody:
 
 Style/FrozenStringLiteralComment:
   Enabled: true
+
+Style/StringLiterals:
+  Enabled: true
+  EnforcedStyle: double_quotes

benchmark/instantiate.rb

@@ -2,12 +2,12 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'benchmark/ips'
-require 'fiber'
+require "benchmark/ips"
+require "fiber"
 
-require_relative '../lib/event'
+require_relative "../lib/event"
 
 GC.disable
 

benchmark/readable.rb

@@ -2,13 +2,13 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'benchmark/ips'
-require 'fiber'
-require 'console'
+require "benchmark/ips"
+require "fiber"
+require "console"
 
-require_relative '../lib/event'
+require_relative "../lib/event"
 
 Event::Selector.constants.each do |name|
 	selector = Event::Selector.const_get(name).new(Fiber.current)

benchmark/server/async.rb

@@ -2,15 +2,15 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'async'
-require 'async/io/tcp_socket'
+require "async"
+require "async/io/tcp_socket"
 
 port = Integer(ARGV.pop || 9090)
 
 Async do |task|
-	server = Async::IO::TCPServer.new('localhost', port)
+	server = Async::IO::TCPServer.new("localhost", port)
 
 	loop do
 		peer, address = server.accept

benchmark/server/bake.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
 SERVERS = [
 	"compiled",
@@ -19,7 +19,7 @@ def default
 end
 
 def build
-	compiler = ENV.fetch('CC', 'clang')
+	compiler = ENV.fetch("CC", "clang")
 	system(compiler, "compiled.c", "-o", "compiled", chdir: __dir__)
 end
 
@@ -28,7 +28,7 @@ def build
 # @parameter duration [Integer] The duration of the test.
 def benchmark(connections: 8, threads: 1, duration: 1)
 	port = 9095
-	wrk = ENV.fetch('WRK', 'wrk')
+	wrk = ENV.fetch("WRK", "wrk")
 
 	SERVERS.each do |server|
 		$stdout.puts [nil, "Benchmark #{server}..."]

benchmark/server/buffer.rb

@@ -2,9 +2,9 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2022, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require_relative 'scheduler'
+require_relative "scheduler"
 
 scheduler = DirectScheduler.new
 Fiber.set_scheduler(scheduler)
@@ -19,7 +19,7 @@
 RESPONSE_SIZE = RESPONSE.set_string(RESPONSE_STRING)
 
 Fiber.schedule do
-	server = TCPServer.new('localhost', port)
+	server = TCPServer.new("localhost", port)
 
 	loop do
 		peer, address = server.accept

benchmark/server/event.rb

@@ -2,10 +2,10 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require_relative 'scheduler'
-require 'io/nonblock'
+require_relative "scheduler"
+require "io/nonblock"
 
 #scheduler = DirectScheduler.new
 scheduler = Scheduler.new
@@ -16,7 +16,7 @@
 RESPONSE = "HTTP/1.1 204 No Content\r\nConnection: close\r\n\r\n"
 
 Fiber.schedule do
-	server = TCPServer.new('localhost', port)
+	server = TCPServer.new("localhost", port)
 	server.listen(Socket::SOMAXCONN)
 
 	loop do

benchmark/server/fork.rb

@@ -2,12 +2,12 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'socket'
+require "socket"
 
 port = Integer(ARGV.pop || 9090)
-server = TCPServer.new('localhost', port)
+server = TCPServer.new("localhost", port)
 
 loop do
 	peer = server.accept

benchmark/server/loop.rb

@@ -2,13 +2,13 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'socket'
+require "socket"
 
 port = Integer(ARGV.pop || 9090)
 
-server = TCPServer.new('localhost', port)
+server = TCPServer.new("localhost", port)
 
 loop do
 	peer, address = server.accept

benchmark/server/scheduler.rb

@@ -1,15 +1,15 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
 $LOAD_PATH << File.expand_path("../../lib", __dir__)
 $LOAD_PATH << File.expand_path("../../ext", __dir__)
 
-require 'io/event'
+require "io/event"
 
-require 'socket'
-require 'fiber'
+require "socket"
+require "fiber"
 
 class Scheduler
 	def initialize(selector = nil)

benchmark/server/thread.rb

@@ -2,12 +2,12 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'socket'
+require "socket"
 
 port = Integer(ARGV.pop || 9090)
-server = TCPServer.new('localhost', port)
+server = TCPServer.new("localhost", port)
 
 loop do
 	peer = server.accept

config/sus.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2022, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
 $LOAD_PATH << ::File.expand_path("../ext", __dir__)
 Warning[:experimental] = false
 
-require 'covered/sus'
+require "covered/sus"
 include Covered::Sus

examples/compare_interrupt.rb

@@ -2,11 +2,11 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'io/event'
-require 'fiber'
-require 'benchmark'
+require "io/event"
+require "fiber"
+require "benchmark"
 
 Thread.report_on_exception = true
 

examples/handle_interrupt.rb

@@ -2,11 +2,11 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'io/event'
-require 'fiber'
-require 'benchmark'
+require "io/event"
+require "fiber"
+require "benchmark"
 
 count = 0
 

examples/interrupt.rb

@@ -2,10 +2,10 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'fiber'
-require '../lib/event'
+require "fiber"
+require "../lib/event"
 
 th = Thread.new do
 	selector = Event::Selector.new(Fiber.current)

examples/scheduler/scheduler.rb

@@ -1,11 +1,11 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'io/event'
-require 'timers'
-require 'resolv'
+require "io/event"
+require "timers"
+require "resolv"
 
 class IO
 	module Event
@@ -209,7 +209,7 @@ def run_once(timeout = nil)
 
 			# Run the reactor until all tasks are finished. Proxies arguments to {#async} immediately before entering the loop, if a block is provided.
 			def run
-				Kernel.raise(RuntimeError, 'Reactor has been closed') if @selector.nil?
+				Kernel.raise(RuntimeError, "Reactor has been closed") if @selector.nil?
 
 				Thread.handle_interrupt(Errno::EINTR => :never, Interrupt => :never) do
 					while self.run_once

examples/scheduler/scheduler_spec.rb

@@ -1,9 +1,9 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require_relative 'scheduler'
+require_relative "scheduler"
 
 RSpec.shared_examples_for IO::Event::Scheduler do
 	subject(:scheduler) {IO::Event::Scheduler.new(selector)}
@@ -17,7 +17,7 @@
 		thread.join
 	end
 
-	it 'can run several fibers' do
+	it "can run several fibers" do
 		sum = 0
 
 		fibers = 3.times.map do |i|
@@ -29,7 +29,7 @@
 		expect(sum).to be == 3
 	end
 
-	it 'can join threads' do
+	it "can join threads" do
 		Fiber.schedule do
 			1000.times do
 				thread = ::Thread.new do

ext/extconf.rb

@@ -7,16 +7,16 @@
 
 return if RUBY_DESCRIPTION =~ /jruby/
 
-require 'mkmf'
+require "mkmf"
 
 gem_name = File.basename(__dir__)
-extension_name = 'IO_Event'
+extension_name = "IO_Event"
 
 # dir_config(extension_name)
 
 $CFLAGS << " -Wall -Wno-unknown-pragmas -std=c99"
 
-if ENV.key?('RUBY_DEBUG')
+if ENV.key?("RUBY_DEBUG")
 	$CFLAGS << " -DRUBY_DEBUG -O0"
 
 	# Add address and undefined behaviour sanitizers:
@@ -28,24 +28,24 @@
 $VPATH << "$(srcdir)/io/event"
 $VPATH << "$(srcdir)/io/event/selector"
 
-have_func('rb_ext_ractor_safe')
-have_func('&rb_fiber_transfer')
+have_func("rb_ext_ractor_safe")
+have_func("&rb_fiber_transfer")
 
-if have_library('uring') and have_header('liburing.h')
+if have_library("uring") and have_header("liburing.h")
 	$srcs << "io/event/selector/uring.c"
 end
 
-if have_header('sys/epoll.h')
+if have_header("sys/epoll.h")
 	$srcs << "io/event/selector/epoll.c"
 end
 
-if have_header('sys/event.h')
+if have_header("sys/event.h")
 	$srcs << "io/event/selector/kqueue.c"
 end
 
-have_header('sys/wait.h')
+have_header("sys/wait.h")
 
-have_header('sys/eventfd.h')
+have_header("sys/eventfd.h")
 $srcs << "io/event/interrupt.c"
 
 have_func("rb_io_descriptor")
@@ -54,7 +54,7 @@
 have_func("&rb_fiber_raise")
 have_func("epoll_pwait2")
 
-have_header('ruby/io/buffer.h')
+have_header("ruby/io/buffer.h")
 
 create_header
 

gems.rb

@@ -1,9 +1,9 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-source 'https://rubygems.org'
+source "https://rubygems.org"
 
 gemspec