class Tins::Limited
Attributes
maximum[R]
The maximum number of worker threads.
Public Class Methods
new(maximum)
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Create a Limited
instance, that runs maximum threads at most.
# File lib/tins/limited.rb, line 6 def initialize(maximum) @mutex = Mutex.new @continue = ConditionVariable.new @maximum = Integer(maximum) raise ArgumentError, "maximum < 1" if @maximum < 1 @count = 0 @tg = ThreadGroup.new end
Public Instance Methods
execute() { || ... }
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Execute maximum number of threads in parallel.
# File lib/tins/limited.rb, line 19 def execute @mutex.synchronize do loop do if @count < @maximum @count += 1 Thread.new do @tg.add Thread.current yield @mutex.synchronize { @count -= 1 } @continue.signal end return else @continue.wait(@mutex) end end end end
process() { |self| ... }
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# File lib/tins/limited.rb, line 42 def process yield self ensure wait end
wait()
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# File lib/tins/limited.rb, line 38 def wait @tg.list.each(&:join) end