Class: PDF::Reader::SynchronizedCache

Inherits:

Object

• Object
• PDF::Reader::SynchronizedCache

Defined in:

lib/pdf/reader/synchronized_cache.rb

Overview

Throughout the pdf-reader codebase, repeated calculations which can benefit from caching are made In some cases, caching and reusing results can not only save CPU cycles but also greatly reduce memory requirements But at the same time, we don’t want to throw away thread safety We have two interchangeable thread-safe cache implementations:

Instance Method Summary

• #[](key) ⇒ Object
• #[]=(key, value) ⇒ Object
• #initialize ⇒ SynchronizedCache constructor

  A new instance of SynchronizedCache.

Constructor Details

#initialize ⇒ SynchronizedCache

Returns a new instance of SynchronizedCache.

# File 'lib/pdf/reader/synchronized_cache.rb', line 21

def initialize
  @cache = {}
  @mutex = Mutex.new
end

Instance Method Details

#[](key) ⇒ Object

# File 'lib/pdf/reader/synchronized_cache.rb', line 25

def [](key)
  @mutex.synchronize { @cache[key] }
end

#[]=(key, value) ⇒ Object

# File 'lib/pdf/reader/synchronized_cache.rb', line 28

def []=(key,value)
  @mutex.synchronize { @cache[key] = value }
end