/usr/lib/ruby/vendor_ruby/celluloid/condition.rb is in ruby-celluloid 0.16.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | module Celluloid
class ConditionError < Celluloid::Error; end
# ConditionVariable-like signaling between tasks and threads
class Condition
class Waiter
def initialize(condition, task, mailbox, timeout)
@condition = condition
@task = task
@mailbox = mailbox
@timeout = timeout
end
attr_reader :condition, :task
def <<(message)
@mailbox << message
end
def wait
begin
message = @mailbox.receive(@timeout) do |msg|
msg.is_a?(SignalConditionRequest) && msg.task == Thread.current
end
rescue TimeoutError
raise ConditionError, "timeout after #{@timeout.inspect} seconds"
end until message
message.value
end
end
def initialize
@mutex = Mutex.new
@waiters = []
end
# Wait for the given signal and return the associated value
def wait(timeout = nil)
raise ConditionError, "cannot wait for signals while exclusive" if Celluloid.exclusive?
if actor = Thread.current[:celluloid_actor]
task = Task.current
if timeout
bt = caller
timer = actor.timers.after(timeout) do
exception = ConditionError.new("timeout after #{timeout.inspect} seconds")
exception.set_backtrace bt
task.resume exception
end
end
else
task = Thread.current
end
waiter = Waiter.new(self, task, Celluloid.mailbox, timeout)
@mutex.synchronize do
@waiters << waiter
end
result = Celluloid.suspend :condwait, waiter
timer.cancel if timer
raise result if result.is_a? ConditionError
result
end
# Send a signal to the first task waiting on this condition
def signal(value = nil)
@mutex.synchronize do
if waiter = @waiters.shift
waiter << SignalConditionRequest.new(waiter.task, value)
else
Logger.with_backtrace(caller(3)) do |logger|
logger.debug("Celluloid::Condition signaled spuriously")
end
end
end
end
# Broadcast a value to all waiting tasks and threads
def broadcast(value = nil)
@mutex.synchronize do
@waiters.each { |waiter| waiter << SignalConditionRequest.new(waiter.task, value) }
@waiters.clear
end
end
alias_method :inspect, :to_s
end
end
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