示例代码：

复制代码 代码如下:
require "thread"
puts "ProAndCon"

queue = Queue.new #用队列Queue实现线程同步

producer = Thread.new do
10.times do |i|
sleep rand(i) # 让线程睡眠一段时间
queue << i
puts "#{i} produced"
end
end

consumer = Thread.new do
10.times do |i|
value = queue.pop
sleep rand(i/2)
puts "consumed #{value}"
end
end

consumer.join #等待consumer线程的输出完成再关闭此进程

运行结果：

复制代码 代码如下:
ProAndCon
produced
produced
consumed 0
produced
produced
consumed 1
consumed 2
consumed 3
produced
consumed 4
produced
consumed 5

美化的代码图：