Class: LIBUSB::Context::Pollfd

Inherits:

Object

• Object
• LIBUSB::Context::Pollfd

Includes:

Comparable

Defined in:

lib/libusb/context.rb

Instance Attribute Summary

• #events ⇒ Integer readonly

  Event flags to poll for.

• #fd ⇒ Integer readonly

  Numeric file descriptor.

Instance Method Summary

• #<=>(other) ⇒ Object
• #initialize(fd, events = 0) ⇒ Pollfd constructor

  A new instance of Pollfd.

• #inspect ⇒ Object
• #io ⇒ IO

  IO object bound to the file descriptor.

• #pollin? ⇒ Boolean

  True if the file descriptor has to be observed for incoming/readable data.

• #pollout? ⇒ Boolean

  True if the file descriptor has to be observed for outgoing/writeable data.

Constructor Details

#initialize(fd, events = 0) ⇒ Pollfd

# File 'lib/libusb/context.rb', line 24

def initialize(fd, events=0)
  @fd, @events = fd, events
end

Instance Attribute Details

#events ⇒ Integer (readonly)

# File 'lib/libusb/context.rb', line 44

def events
  @events
end

#fd ⇒ Integer (readonly)

# File 'lib/libusb/context.rb', line 41

def fd
  @fd
end

Instance Method Details

#<=>(other) ⇒ Object

# File 'lib/libusb/context.rb', line 28

def <=>(other)
  @fd <=> other.fd
end

#inspect ⇒ Object

# File 'lib/libusb/context.rb', line 56

def inspect
  "\#<#{self.class} fd:#{@fd}#{' POLLIN' if pollin?}#{' POLLOUT' if pollout?}>"
end

#io ⇒ IO

# File 'lib/libusb/context.rb', line 33

def io
  rio = IO.new @fd
  # autoclose is available in Ruby-1.9+ only
  rio.autoclose = false if rio.respond_to?( :autoclose= )
  rio
end

#pollin? ⇒ Boolean

# File 'lib/libusb/context.rb', line 47

def pollin?
  @events & POLLIN != 0
end

#pollout? ⇒ Boolean

# File 'lib/libusb/context.rb', line 52

def pollout?
  @events & POLLOUT != 0
end