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?;optparse	[ DIR ]	drwxr-xr-x
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English.rb	6.44 KB	-rw-r--r--
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benchmark.rb	17.94 KB	-rw-r--r--
cgi.rb	9.39 KB	-rw-r--r--
cmath.rb	7.22 KB	-rw-r--r--
complex.rb	380 B	-rw-r--r--
csv.rb	81.32 KB	-rw-r--r--
date.rb	946 B	-rw-r--r--
debug.rb	28.9 KB	-rw-r--r--
delegate.rb	9.78 KB	-rw-r--r--
digest.rb	2.24 KB	-rw-r--r--
dl.rb	280 B	-rw-r--r--
drb.rb	19 B	-rw-r--r--
e2mmap.rb	3.8 KB	-rw-r--r--
erb.rb	26.08 KB	-rw-r--r--
expect.rb	2.14 KB	-rw-r--r--
fiddle.rb	1.25 KB	-rw-r--r--
fileutils.rb	46.35 KB	-rw-r--r--
find.rb	2.08 KB	-rw-r--r--
forwardable.rb	7.56 KB	-rw-r--r--
getoptlong.rb	15.38 KB	-rw-r--r--
gserver.rb	8.86 KB	-rw-r--r--
ipaddr.rb	26.17 KB	-rw-r--r--
irb.rb	20.03 KB	-rw-r--r--
json.rb	1.74 KB	-rw-r--r--
kconv.rb	5.74 KB	-rw-r--r--
logger.rb	20.96 KB	-rw-r--r--
mathn.rb	6.52 KB	-rw-r--r--
matrix.rb	45.02 KB	-rw-r--r--
mkmf.rb	78.19 KB	-rw-r--r--
monitor.rb	6.93 KB	-rw-r--r--
mutex_m.rb	2 KB	-rw-r--r--
observer.rb	5.71 KB	-rw-r--r--
open-uri.rb	23.66 KB	-rw-r--r--
open3.rb	21.17 KB	-rw-r--r--
openssl.rb	528 B	-rw-r--r--
optparse.rb	51.27 KB	-rw-r--r--
ostruct.rb	7.64 KB	-rw-r--r--
pathname.rb	15.3 KB	-rw-r--r--
pp.rb	13.14 KB	-rw-r--r--
prettyprint.rb	9.63 KB	-rw-r--r--
prime.rb	13.98 KB	-rw-r--r--
profile.rb	205 B	-rw-r--r--
profiler.rb	4.29 KB	-rw-r--r--
pstore.rb	14.85 KB	-rw-r--r--
psych.rb	9.9 KB	-rw-r--r--
rake.rb	2.07 KB	-rw-r--r--
rational.rb	308 B	-rw-r--r--
rdoc.rb	4.88 KB	-rw-r--r--
resolv-replace.rb	1.73 KB	-rw-r--r--
resolv.rb	61.45 KB	-rw-r--r--
ripper.rb	2.53 KB	-rw-r--r--
rss.rb	2.84 KB	-rw-r--r--
rubygems.rb	27.53 KB	-rw-r--r--
scanf.rb	23.52 KB	-rw-r--r--
securerandom.rb	8.56 KB	-rw-r--r--
set.rb	17.32 KB	-rw-r--r--
shell.rb	10.3 KB	-rw-r--r--
shellwords.rb	5.94 KB	-rw-r--r--
singleton.rb	4.02 KB	-rw-r--r--
socket.rb	25.76 KB	-rw-r--r--
sync.rb	7.26 KB	-rw-r--r--
tempfile.rb	10.15 KB	-rw-r--r--
thread.rb	6.94 KB	-rw-r--r--
thwait.rb	3.38 KB	-rw-r--r--
time.rb	21.09 KB	-rw-r--r--
timeout.rb	3.16 KB	-rw-r--r--
tmpdir.rb	4.15 KB	-rw-r--r--
tracer.rb	6.54 KB	-rw-r--r--
tsort.rb	6.79 KB	-rw-r--r--
ubygems.rb	268 B	-rw-r--r--
un.rb	8.34 KB	-rw-r--r--
uri.rb	3.07 KB	-rw-r--r--
weakref.rb	3.23 KB	-rw-r--r--
webrick.rb	6.7 KB	-rw-r--r--
xmlrpc.rb	8.49 KB	-rw-r--r--
yaml.rb	2.3 KB	-rw-r--r--

Code Editor : thread.rb

#
#               thread.rb - thread support classes
#                       by Yukihiro Matsumoto <matz@netlab.co.jp>
#
# Copyright (C) 2001  Yukihiro Matsumoto
# Copyright (C) 2000  Network Applied Communication Laboratory, Inc.
# Copyright (C) 2000  Information-technology Promotion Agency, Japan
#

unless defined? Thread
  raise "Thread not available for this ruby interpreter"
end

unless defined? ThreadError
  class ThreadError < StandardError
  end
end

if $DEBUG
  Thread.abort_on_exception = true
end

#
# ConditionVariable objects augment class Mutex. Using condition variables,
# it is possible to suspend while in the middle of a critical section until a
# resource becomes available.
#
# Example:
#
#   require 'thread'
#
#   mutex = Mutex.new
#   resource = ConditionVariable.new
#
#   a = Thread.new {
#     mutex.synchronize {
#       # Thread 'a' now needs the resource
#       resource.wait(mutex)
#       # 'a' can now have the resource
#     }
#   }
#
#   b = Thread.new {
#     mutex.synchronize {
#       # Thread 'b' has finished using the resource
#       resource.signal
#     }
#   }
#
class ConditionVariable
  #
  # Creates a new ConditionVariable
  #
  def initialize
    @waiters = {}
    @waiters_mutex = Mutex.new
  end

#
  # Releases the lock held in +mutex+ and waits; reacquires the lock on wakeup.
  #
  # If +timeout+ is given, this method returns after +timeout+ seconds passed,
  # even if no other thread doesn't signal.
  #
  def wait(mutex, timeout=nil)
    Thread.handle_interrupt(StandardError => :never) do
      begin
        Thread.handle_interrupt(StandardError => :on_blocking) do
          @waiters_mutex.synchronize do
            @waiters[Thread.current] = true
          end
          mutex.sleep timeout
        end
      ensure
        @waiters_mutex.synchronize do
          @waiters.delete(Thread.current)
        end
      end
    end
    self
  end

#
  # Wakes up the first thread in line waiting for this lock.
  #
  def signal
    Thread.handle_interrupt(StandardError => :on_blocking) do
      begin
        t, _ = @waiters_mutex.synchronize { @waiters.shift }
        t.run if t
      rescue ThreadError
        retry # t was already dead?
      end
    end
    self
  end

#
  # Wakes up all threads waiting for this lock.
  #
  def broadcast
    Thread.handle_interrupt(StandardError => :on_blocking) do
      threads = nil
      @waiters_mutex.synchronize do
        threads = @waiters.keys
        @waiters.clear
      end
      for t in threads
        begin
          t.run
        rescue ThreadError
        end
      end
    end
    self
  end
end

#
# This class provides a way to synchronize communication between threads.
#
# Example:
#
#   require 'thread'
#
#   queue = Queue.new
#
#   producer = Thread.new do
#     5.times do |i|
#       sleep rand(i) # simulate expense
#       queue << i
#       puts "#{i} produced"
#     end
#   end
#
#   consumer = Thread.new do
#     5.times do |i|
#       value = queue.pop
#       sleep rand(i/2) # simulate expense
#       puts "consumed #{value}"
#     end
#   end
#
#   consumer.join
#
class Queue
  #
  # Creates a new queue.
  #
  def initialize
    @que = []
    @que.taint          # enable tainted communication
    @num_waiting = 0
    self.taint
    @mutex = Mutex.new
    @cond = ConditionVariable.new
  end

#
  # Pushes +obj+ to the queue.
  #
  def push(obj)
    Thread.handle_interrupt(StandardError => :on_blocking) do
      @mutex.synchronize do
        @que.push obj
        @cond.signal
      end
    end
  end

#
  # Alias of push
  #
  alias << push

#
  # Alias of push
  #
  alias enq push

#
  # Retrieves data from the queue.  If the queue is empty, the calling thread is
  # suspended until data is pushed onto the queue.  If +non_block+ is true, the
  # thread isn't suspended, and an exception is raised.
  #
  def pop(non_block=false)
    Thread.handle_interrupt(StandardError => :on_blocking) do
      @mutex.synchronize do
        while true
          if @que.empty?
            if non_block
              raise ThreadError, "queue empty"
            else
              begin
                @num_waiting += 1
                @cond.wait @mutex
              ensure
                @num_waiting -= 1
              end
            end
          else
            return @que.shift
          end
        end
      end
    end
  end

#
  # Alias of pop
  #
  alias shift pop

#
  # Alias of pop
  #
  alias deq pop

#
  # Returns +true+ if the queue is empty.
  #
  def empty?
    @que.empty?
  end

#
  # Removes all objects from the queue.
  #
  def clear
    @que.clear
  end

#
  # Returns the length of the queue.
  #
  def length
    @que.length
  end

#
  # Alias of length.
  #
  alias size length

#
  # Returns the number of threads waiting on the queue.
  #
  def num_waiting
    @num_waiting
  end
end

#
# This class represents queues of specified size capacity.  The push operation
# may be blocked if the capacity is full.
#
# See Queue for an example of how a SizedQueue works.
#
class SizedQueue < Queue
  #
  # Creates a fixed-length queue with a maximum size of +max+.
  #
  def initialize(max)
    raise ArgumentError, "queue size must be positive" unless max > 0
    @max = max
    @enque_cond = ConditionVariable.new
    @num_enqueue_waiting = 0
    super()
  end

#
  # Returns the maximum size of the queue.
  #
  def max
    @max
  end

#
  # Sets the maximum size of the queue.
  #
  def max=(max)
    raise ArgumentError, "queue size must be positive" unless max > 0

@mutex.synchronize do
      if max <= @max
        @max = max
      else
        diff = max - @max
        @max = max
        diff.times do
          @enque_cond.signal
        end
      end
    end
    max
  end

#
  # Pushes +obj+ to the queue.  If there is no space left in the queue, waits
  # until space becomes available.
  #
  def push(obj)
    Thread.handle_interrupt(RuntimeError => :on_blocking) do
      @mutex.synchronize do
        while true
          break if @que.length < @max
          @num_enqueue_waiting += 1
          begin
            @enque_cond.wait @mutex
          ensure
            @num_enqueue_waiting -= 1
          end
        end

@que.push obj
        @cond.signal
      end
    end
  end

#
  # Removes all objects from the queue.
  #
  def clear
    super
    @mutex.synchronize do
      @max.times do
        @enque_cond.signal
      end
    end
  end

#
  # Alias of push
  #
  alias << push

#
  # Alias of push
  #
  alias enq push

#
  # Retrieves data from the queue and runs a waiting thread, if any.
  #
  def pop(*args)
    retval = super
    @mutex.synchronize do
      if @que.length < @max
        @enque_cond.signal
      end
    end
    retval
  end

#
  # Alias of pop
  #
  alias shift pop

#
  # Alias of pop
  #
  alias deq pop

#
  # Returns the number of threads waiting on the queue.
  #
  def num_waiting
    @num_waiting + @num_enqueue_waiting
  end
end

# Documentation comments:
#  - How do you make RDoc inherit documentation from superclass?

${this.title}

Code Editor : thread.rb