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authorko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2012-10-05 08:14:09 +0000
committerko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2012-10-05 08:14:09 +0000
commite03d6d9eb84764cb854dc500ce8c19d85db53656 (patch)
treef0682f240c20512d7c888921ce72ecf4f697cc46 /test/objspace
parent7cc6bfa32947dcc60dab6e47250409b7962b29e7 (diff)
* ext/objspace/objspace.c: add ObjectSpace#reachable_objects_from.
This method returns an array of objects referenced by given object. If given object is special objects such as true/false/nil/Fixnum etc then it returns nil. See rdoc for details. [ruby-core:39772] * test/objspace/test_objspace.rb: add a test for this method. * gc.c: add rb_objspace_reachable_objects_from(). To make this function, add several member `mark_func_data' to rb_objspace_t. If mark_func_data is not null, then gc_mark() calls mark_func_data::mark_func. * gc.h: export rb_objspace_reachable_objects_from(). git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37094 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/objspace')
-rw-r--r--test/objspace/test_objspace.rb26
1 files changed, 26 insertions, 0 deletions
diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb
index 345b00f..a189231 100644
--- a/test/objspace/test_objspace.rb
+++ b/test/objspace/test_objspace.rb
@@ -68,4 +68,30 @@ class TestObjSpace < Test::Unit::TestCase
ObjectSpace.count_tdata_objects(arg)
assert_equal(false, arg.empty?)
end
+
+ def test_reachable_objects_from
+ assert_equal(nil, ObjectSpace.reachable_objects_from(nil))
+ assert_equal([Array, 'a', 'b', 'c'], ObjectSpace.reachable_objects_from(['a', 'b', 'c']))
+
+ assert_equal([Array, 'a', 'a', 'a'], ObjectSpace.reachable_objects_from(['a', 'a', 'a']))
+ assert_equal([Array, 'a', 'a'], ObjectSpace.reachable_objects_from(['a', v = 'a', v]))
+ assert_equal([Array, 'a'], ObjectSpace.reachable_objects_from([v = 'a', v, v]))
+
+ long_ary = Array.new(1_000){''}
+ max = 0
+
+ ObjectSpace.each_object{|o|
+ refs = ObjectSpace.reachable_objects_from(o)
+ max = [refs.size, max].max
+
+ unless refs.nil?
+ refs.each{|ro|
+ # check this referenced object is not internal object
+ assert_equal(false, ro.nil?)
+ }
+ end
+ }
+ STDERR.puts max
+ assert_equal(true, max >= 1_001) # 1000 elems + Array class
+ end
end