Parent

ThreadSafe::NonConcurrentCacheBackend

Public Class Methods

new(options = nil) click to toggle source

WARNING: all public methods of the class must operate on the @backend directly without calling each other. This is important because of the SynchronizedCacheBackend which uses a non-reentrant mutex for perfomance reasons.

# File lib/thread_safe/non_concurrent_cache_backend.rb, line 5
def initialize(options = nil)
  @backend = {}
end

Public Instance Methods

[](key) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 9
def [](key)
  @backend[key]
end
Also aliased as: _get
[]=(key, value) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 13
def []=(key, value)
  @backend[key] = value
end
Also aliased as: _set
clear() click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 86
def clear
  @backend.clear
  self
end
compute(key) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 47
def compute(key)
  store_computed_value(key, yield(@backend[key]))
end
compute_if_absent(key) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 17
def compute_if_absent(key)
  if NULL != (stored_value = @backend.fetch(key, NULL))
    stored_value
  else
    @backend[key] = yield
  end
end
compute_if_present(key) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 41
def compute_if_present(key)
  if NULL != (stored_value = @backend.fetch(key, NULL))
    store_computed_value(key, yield(stored_value))
  end
end
delete(key) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 73
def delete(key)
  @backend.delete(key)
end
delete_pair(key, value) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 77
def delete_pair(key, value)
  if pair?(key, value)
    @backend.delete(key)
    true
  else
    false
  end
end
each_pair() click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 91
def each_pair
  dupped_backend.each_pair do |k, v|
    yield k, v
  end
  self
end
get_and_set(key, value) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 59
def get_and_set(key, value)
  stored_value = @backend[key]
  @backend[key] = value
  stored_value
end
get_or_default(key, default_value) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 102
def get_or_default(key, default_value)
  @backend.fetch(key, default_value)
end
key?(key) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 65
def key?(key)
  @backend.key?(key)
end
merge_pair(key, value) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 51
def merge_pair(key, value)
  if NULL == (stored_value = @backend.fetch(key, NULL))
    @backend[key] = value
  else
    store_computed_value(key, yield(stored_value))
  end
end
replace_if_exists(key, new_value) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 34
def replace_if_exists(key, new_value)
  if NULL != (stored_value = @backend.fetch(key, NULL))
    @backend[key] = new_value
    stored_value
  end
end
replace_pair(key, old_value, new_value) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 25
def replace_pair(key, old_value, new_value)
  if pair?(key, old_value)
    @backend[key] = new_value
    true
  else
    false
  end
end
size() click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 98
def size
  @backend.size
end
value?(value) click to toggle source
# File lib/thread_safe/non_concurrent_cache_backend.rb, line 69
def value?(value)
  @backend.value?(value)
end

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