Class: DTAS::Sigevent

Inherits:

SleepyPenguin::EventFD

• Object
• SleepyPenguin::EventFD
• DTAS::Sigevent

Defined in:

lib/dtas/sigevent/efd.rb,
lib/dtas/sigevent/pipe.rb

Overview

used in various places for safe wakeups from IO.select via signals A fallback for non-Linux systems lacking the “sleepy_penguin” RubyGem

Instance Attribute Summary

• #to_io ⇒ Object readonly

  :nodoc:.

Class Method Summary

• .new ⇒ Object

  :nodoc:.

Instance Method Summary

• #close ⇒ Object
• #initialize ⇒ Sigevent constructor

  A new instance of Sigevent.

• #readable_iter {|_self, nil| ... } ⇒ Object
• #signal ⇒ Object

Constructor Details

#initialize ⇒ Sigevent

Returns a new instance of Sigevent.

# File 'lib/dtas/sigevent/pipe.rb', line 9

def initialize
  @to_io, @wr = IO.pipe
end

Instance Attribute Details

#to_io ⇒ Object (readonly)

:nodoc:

# File 'lib/dtas/sigevent/pipe.rb', line 7

def to_io
  @to_io
end

Class Method Details

.new ⇒ Object

:nodoc:

# File 'lib/dtas/sigevent/efd.rb', line 7

def self.new
  super(0, :CLOEXEC)
end

Instance Method Details

#close ⇒ Object

# File 'lib/dtas/sigevent/pipe.rb', line 26

def close
  @to_io.close
  @wr.close
end

#readable_iter {|_self, nil| ... } ⇒ Object

Yields:

• (_self, nil)

Yield Parameters:

• _self (DTAS::Sigevent) —

  the object that the method was called on

# File 'lib/dtas/sigevent/efd.rb', line 15

def readable_iter
  value(true)
  yield self, nil # calls DTAS::Process.reaper
  :wait_readable
end

#signal ⇒ Object

# File 'lib/dtas/sigevent/efd.rb', line 11

def signal
  incr(1)
end