require 'thread'
class Client
def initialize(gate, name)
@gate = gate
@name = name
@t = Thread.new {
do_run
}
end
def do_run
3.times do
@gate.pass(@name)
end
end
def join
@t.join
end
end
class Gate
def initialize
@counter = 0
@mutex = Mutex.new
end
def pass(name)
@mutex.synchronize {
puts "----"
@counter += 1
puts "#{@counter} enter #{name}"
2.times do
print "."
sleep 1
end
puts "\n#{@counter} exit #{name}"
puts "----"
}
end
end
# Main
gate = Gate.new
c1 = Client.new(gate, "Aclient")
c2 = Client.new(gate, "Bclient")
c3 = Client.new(gate, "Cclient")
c1.join
c2.join
c3.join
1 enter Aclient
..
1 exit Aclient
2 enter Bclient
..
2 exit Bclient
3 enter Cclient
..
3 exit Cclient
4 enter Aclient
..
4 exit Aclient
5 enter Bclient
..
5 exit Bclient
6 enter Cclient
..
6 exit Cclient
7 enter Aclient
..
7 exit Aclient
8 enter Bclient
..
8 exit Bclient
9 enter Cclient
..
9 exit Cclient
