Module: MonitorMixin

Included in:
Empathy::EM::Monitor, Monitor
Defined in:
lib/monitor.rb

Overview

See MRI Ruby's MonitorMixin This file is derived from MRI Ruby 1.9.3 monitor.rb

Copyright (C) 2001 Shugo Maeda [email protected]

The only changes are constant lookups, it dynamically uses thread constants from the included class/extended object

Note this relaces monitor.rb defined by ruby - so even if you don't include empathy you may end up using this module.

Defined Under Namespace

Classes: ConditionVariable

Instance Method Summary collapse

Instance Method Details

#mon_enter ⇒ void

This method returns an undefined value.

Enters exclusive section.



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# File 'lib/monitor.rb', line 102

def mon_enter
  if @mon_owner != mon_class_lookup(:Thread).current
    @mon_mutex.lock
    @mon_owner = mon_class_lookup(:Thread).current
  end
  @mon_count += 1
end

#mon_exit ⇒ void

This method returns an undefined value.

Leaves exclusive section.



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# File 'lib/monitor.rb', line 114

def mon_exit
  mon_check_owner
  @mon_count -=1
  if @mon_count == 0
    @mon_owner = nil
    @mon_mutex.unlock
  end
end

#mon_synchronize ⇒ void Also known as: synchronize

This method returns an undefined value.

Enters exclusive section and executes the block. Leaves the exclusive section automatically when the block exits.



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# File 'lib/monitor.rb', line 127

def mon_synchronize
  mon_enter
  begin
    yield
  ensure
    mon_exit
  end
end

#mon_try_enter ⇒ Boolean Also known as: try_mon_enter

Attempts to enter exclusive section.

Returns:

  • (Boolean) —

    whether entry was successful



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# File 'lib/monitor.rb', line 85

def mon_try_enter
  if @mon_owner != mon_class_lookup(:Thread).current
    unless @mon_mutex.try_lock
      return false
    end
    @mon_owner = mon_class_lookup(:Thread).current
  end
  @mon_count += 1
  return true
end

#new_cond ⇒ ConditionVariable

Returns a new condition variable associated with the receiver.

Returns:



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# File 'lib/monitor.rb', line 140

def new_cond
  return ConditionVariable.new(self)
end