class Concurrent::Collection::MriMapBackend

def []=(key, value)
  @write_lock.synchronize { super }
end

def clear
  @write_lock.synchronize { super }
end

def compute(key)
  @write_lock.synchronize { super }
end

def compute_if_absent(key)
  if NULL != (stored_value = @backend.fetch(key, NULL)) # fast non-blocking path for the most likely case
    stored_value
  else
    @write_lock.synchronize { super }
  end
end

def compute_if_present(key)
  @write_lock.synchronize { super }
end

def delete(key)
  @write_lock.synchronize { super }
end

def delete_pair(key, value)
  @write_lock.synchronize { super }
end

def get_and_set(key, value)
  @write_lock.synchronize { super }
end

def initialize(options = nil, &default_proc)
  super(options, &default_proc)
  @write_lock = Mutex.new
end

def merge_pair(key, value)
  @write_lock.synchronize { super }
end

def replace_if_exists(key, new_value)
  @write_lock.synchronize { super }
end

def replace_pair(key, old_value, new_value)
  @write_lock.synchronize { super }
end