class MonitorMixin::ConditionVariable

FIXME: This isn't documented in Nutshell.

Since MonitorMixin#new_cond returns a ConditionVariable, and the example above calls while_wait and signal, this class should be documented.

Public Class Methods

new(monitor) click to toggle source

# File lib/monitor.rb, line 158
def initialize(monitor)
  @monitor = monitor
  @cond = Thread::ConditionVariable.new
end

Public Instance Methods

broadcast() click to toggle source

Wakes up all threads waiting for this lock.

# File lib/monitor.rb, line 151
def broadcast
  @monitor.__send__(:mon_check_owner)
  @cond.broadcast
end

signal() click to toggle source

Wakes up the first thread in line waiting for this lock.

# File lib/monitor.rb, line 143
def signal
  @monitor.__send__(:mon_check_owner)
  @cond.signal
end

wait(timeout = nil) click to toggle source

Releases the lock held in the associated monitor 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.

# File lib/monitor.rb, line 107
def wait(timeout = nil)
  Thread.handle_interrupt(EXCEPTION_NEVER) do
    @monitor.__send__(:mon_check_owner)
    count = @monitor.__send__(:mon_exit_for_cond)
    begin
      Thread.handle_interrupt(EXCEPTION_IMMEDIATE) do
        @cond.wait(@monitor.instance_variable_get(:@mon_mutex), timeout)
      end
      return true
    ensure
      @monitor.__send__(:mon_enter_for_cond, count)
    end
  end
end

wait_until() click to toggle source

Calls wait repeatedly until the given block yields a truthy value.

# File lib/monitor.rb, line 134
def wait_until
  until yield
    wait
  end
end

wait_while() click to toggle source

Calls wait repeatedly while the given block yields a truthy value.

# File lib/monitor.rb, line 125
def wait_while
  while yield
    wait
  end
end