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|
#
# finalizer.rb -
# $Release Version: 0.2$
# $Revision: 1.1.1.2.2.2 $
# $Date: 1998/01/19 05:08:24 $
# by Keiju ISHITSUKA
#
# --
#
# Usage:
#
# add(obj, dependant, method = :finalize, *opt)
# add_dependency(obj, dependant, method = :finalize, *opt)
# 依存関係 R_method(obj, dependant) の追加
#
# delete(obj, dependant, method = :finalize)
# delete_dependency(obj, dependant, method = :finalize)
# 依存関係 R_method(obj, dependant) の削除
# delete_all_dependency(obj, dependant)
# 依存関係 R_*(obj, dependant) の削除
# delete_by_dependant(dependant, method = :finalize)
# 依存関係 R_method(*, dependant) の削除
# delete_all_by_dependant(dependant)
# 依存関係 R_*(*, dependant) の削除
# delete_all
# 全ての依存関係の削除.
#
# finalize(obj, dependant, method = :finalize)
# finalize_dependency(obj, dependant, method = :finalize)
# 依存関連 R_method(obj, dependtant) で結ばれるdependantを
# finalizeする.
# finalize_all_dependency(obj, dependant)
# 依存関連 R_*(obj, dependtant) で結ばれるdependantをfinalizeする.
# finalize_by_dependant(dependant, method = :finalize)
# 依存関連 R_method(*, dependtant) で結ばれるdependantをfinalizeする.
# fainalize_all_by_dependant(dependant)
# 依存関連 R_*(*, dependtant) で結ばれるdependantをfinalizeする.
# finalize_all
# Finalizerに登録される全てのdependantをfinalizeする
#
# safe{..}
# gc時にFinalizerが起動するのを止める.
#
#
module Finalizer
RCS_ID='-$Header: /home/cvsroot/ruby/lib/finalize.rb,v 1.1.1.2.2.2 1998/01/19 05:08:24 matz Exp $-'
# Dependency: {id => [[dependant, method, opt], ...], ...}
Dependency = {}
# 依存関係 R_method(obj, dependant) の追加
def add_dependency(obj, dependant, method = :finalize, *opt)
ObjectSpace.call_finalizer(obj)
assoc = [dependant, method, opt]
if dep = Dependency[obj.id]
dep.push assoc
else
Dependency[obj.id] = [assoc]
end
end
alias add add_dependency
# 依存関係 R_method(obj, dependant) の削除
def delete_dependency(obj, dependant, method = :finalize)
id = obj.id
for assoc in Dependency[id]
assoc.delete_if do |d,m,*o|
d == dependant && m == method
end
Dependency.delete(id) if assoc.empty?
end
end
alias delete delete_dependency
# 依存関係 R_*(obj, dependant) の削除
def delete_all_dependency(obj, dependant)
id = obj.id
for assoc in Dependency[id]
assoc.delete_if do |d,m,*o|
d == dependant
end
Dependency.delete(id) if assoc.empty?
end
end
# 依存関係 R_method(*, dependant) の削除
def delete_by_dependant(dependant, method = :finalize)
method = method.intern unless method.kind_of?(Integer)
for id in Dependency.keys
delete(id, dependant, method)
end
end
# 依存関係 R_*(*, dependant) の削除
def delete_all_by_dependant(dependant)
for id in Dependency.keys
delete_all_dependency(id, dependant)
end
end
# 依存関連 R_method(id, dependtant) で結ばれるdependantをfinalizeす
# る.
def finalize_dependency(id, dependant, method = :finalize)
for assocs in Dependency[id]
assocs.delete_if do |d, m, *o|
if d == dependant && m == method
d.send(m, *o)
true
else
false
end
end
Dependency.delete(id) if assoc.empty?
end
end
alias finalize finalize_dependency
# 依存関連 R_*(id, dependtant) で結ばれるdependantをfinalizeする.
def finalize_all_dependency(id, dependant)
for assoc in Dependency[id]
assoc.delete_if do |d, m, *o|
if d == dependant
d.send(m, *o)
true
else
false
end
end
Dependency.delete(id) if assoc.empty?
end
end
# 依存関連 R_method(*, dependtant) で結ばれるdependantをfinalizeする.
def finalize_by_dependant(dependant, method = :finalize)
for id in Dependency.keys
finalize(id, dependant, method)
end
end
# 依存関連 R_*(*, dependtant) で結ばれるdependantをfinalizeする.
def fainalize_all_by_dependant(dependant)
for id in Dependency.keys
finalize_all_dependency(id, dependant)
end
end
# Finalizerに登録されている全てのdependantをfinalizeする
def finalize_all
for id, assocs in Dependency
for dependant, method, *opt in assocs
dependant.send(method, id, *opt)
end
assocs.clear
end
end
# finalize_* を安全に呼び出すためのイテレータ
def safe
old_status, Thread.critical = Thread.critical, true
ObjectSpace.remove_finalizer(Proc)
begin
yield
ensure
ObjectSpace.add_finalizer(Proc)
Thread.critical = old_status
end
end
# ObjectSpace#add_finalizerへの登録関数
def final_of(id)
if assocs = Dependency.delete(id)
for dependant, method, *opt in assocs
dependant.send(method, id, *opt)
end
end
end
Proc = proc{|id| final_of(id)}
ObjectSpace.add_finalizer(Proc)
module_function :add
module_function :add_dependency
module_function :delete
module_function :delete_dependency
module_function :delete_all_dependency
module_function :delete_by_dependant
module_function :delete_all_by_dependant
module_function :finalize
module_function :finalize_dependency
module_function :finalize_all_dependency
module_function :finalize_by_dependant
module_function :fainalize_all_by_dependant
module_function :finalize_all
module_function :safe
module_function :final_of
private_class_method :final_of
end
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