Remove the (erroneously re-added) weakref.rb file and the require line that was still including it (project now uses the ref gem)

This commit is contained in:
Ash Moran 2011-08-26 02:53:19 +08:00 committed by Denis Knauf
parent 93cd84cd59
commit 4745db500c
2 changed files with 0 additions and 60 deletions

View file

@ -1,5 +1,4 @@
require 'bdb'
require 'sbdb/weakhash'
require 'sbdb/db'
require 'sbdb/transaction'

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@ -1,59 +0,0 @@
module SBDB
# See http://eigenclass.org/hiki/deferred-finalizers-in-Ruby
# Not threadsafe.
class WeakHash
attr_reader :cache
def initialize cache = ::Hash.new
@cache = cache
@key_map = {}
@rev_cache = ::Hash.new { |h,k| h[k] = {} }
@reclaim_value = lambda do |value_id|
if @rev_cache.has_key? value_id
@rev_cache[value_id].each_key{ |key| @cache.delete key }
@rev_cache.delete value_id
end
end
@reclaim_key = lambda do |key_id|
@cache.delete @key_map.delete(key_id) if @key_map.has_key? key_id
end
end
def []=(key, value)
case key
when Fixnum, Symbol, true, false
key2 = key
else
key2 = key.dup
end
@rev_cache[value.object_id][key2] = true
@cache[key2] = value.object_id
@key_map[key.object_id] = key2
ObjectSpace.define_finalizer(value, @reclaim_value)
ObjectSpace.define_finalizer(key, @reclaim_key)
value
end
def [](key)
value_id = @cache[key]
return ObjectSpace._id2ref(value_id) unless value_id.nil?
nil
rescue RangeError
nil
end
def each(&e)
@cache.each do |k, vid|
unless vid.nil?
obj =
begin
ObjectSpace._id2ref vid
rescue RangeError
next
end
yield k, obj
end
end
end
end
end