Class: Phlex::FIFO Private

Inherits:
Object
  • Object
show all
Defined in:
lib/phlex/fifo.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

API:

  • private

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(max_bytesize: 2_000, max_value_bytesize: 2_000) ⇒ FIFO

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of FIFO.

API:

  • private



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# File 'lib/phlex/fifo.rb', line 5

def initialize(max_bytesize: 2_000, max_value_bytesize: 2_000)
  @store = {}
  @max_bytesize = max_bytesize
  @max_value_bytesize = max_value_bytesize
  @bytesize = 0
  @mutex = Monitor.new
end

Instance Attribute Details

#bytesize ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/phlex/fifo.rb', line 13

def bytesize
  @bytesize
end

#max_bytesize ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/phlex/fifo.rb', line 13

def max_bytesize
  @max_bytesize
end

Instance Method Details

#[](key) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/phlex/fifo.rb', line 21

def [](key)
  k, v = @store[key.hash]
  v if k.eql?(key)
end

#[]=(key, value) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/phlex/fifo.rb', line 26

def []=(key, value)
  return if value.bytesize > @max_value_bytesize

  digest = key.hash

  @mutex.synchronize do
    # Check the key definitely doesn't exist now we have the lock
    return if @store[digest]

    @store[digest] = [key, value].freeze
    @bytesize += value.bytesize

    while @bytesize > @max_bytesize
      k, v = @store.shift
      @bytesize -= v[1].bytesize
    end
  end
end

#clear ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/phlex/fifo.rb', line 49

def clear
  @mutex.synchronize do
    @store.clear
    @bytesize = 0
  end
end

#expand(bytes) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/phlex/fifo.rb', line 15

def expand(bytes)
  @mutex.synchronize do
    @max_bytesize += bytes
  end
end

#size ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/phlex/fifo.rb', line 45

def size
  @store.size
end