From 25c1fd3b9037d9eb39596bb994eeabed812adada Mon Sep 17 00:00:00 2001
From: kazu <kazu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 10 Apr 2019 09:15:21 +0000
Subject: Reverting all commits from r67479 to r67496 because of CI failures

Because hard to specify commits related to r67479 only.
So please commit again.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_gc_compact.rb | 103 -------------------------------------------
 1 file changed, 103 deletions(-)
 delete mode 100644 test/ruby/test_gc_compact.rb

(limited to 'test/ruby/test_gc_compact.rb')

diff --git a/test/ruby/test_gc_compact.rb b/test/ruby/test_gc_compact.rb
deleted file mode 100644
index 0b2acacdc9..0000000000
--- a/test/ruby/test_gc_compact.rb
+++ /dev/null
@@ -1,103 +0,0 @@
-# frozen_string_literal: true
-require 'test/unit'
-require 'fiddle'
-
-class TestGCCompact < Test::Unit::TestCase
-  if Fiddle::SIZEOF_LONG == Fiddle::SIZEOF_VOIDP
-    def memory_location(obj)
-      (Fiddle.dlwrap(obj) >> 1)
-    end
-  elsif Fiddle::SIZEOF_LONG_LONG == Fiddle::SIZEOF_VOIDP
-    def memory_location(obj)
-      (Fiddle.dlwrap(obj) >> 1) / 2
-    end
-  else
-    raise "Not supported"
-  end
-
-  def assert_object_ids(list)
-    same_count = list.find_all { |obj|
-      memory_location(obj) == obj.object_id
-    }.count
-    list.count - same_count
-  end
-
-  def big_list
-    1000.times.map {
-      # try to make some empty slots by allocating an object and discarding
-      Object.new
-      Object.new
-    } # likely next to each other
-  end
-
-  # Find an object that's allocated in a slot that had a previous
-  # tenant, and that tenant moved and is still alive
-  def find_object_in_recycled_slot(addresses)
-    new_object = nil
-
-    loop do
-      new_object = Object.new
-      if addresses.include? memory_location(new_object)
-        break
-      end
-    end
-
-    new_object
-  end
-
-  def test_find_collided_object
-    list_of_objects = big_list
-
-    ids       = list_of_objects.map(&:object_id) # store id in map
-    addresses = list_of_objects.map(&self.:memory_location)
-
-    # All object ids should be equal
-    assert_equal 0, assert_object_ids(list_of_objects) # should be 0
-
-    GC.compact
-
-    # Some should have moved
-    id_count = assert_object_ids(list_of_objects)
-    skip "couldn't get objects to move" if id_count == 0
-    assert_operator id_count, :>, 0
-
-    new_ids = list_of_objects.map(&:object_id)
-
-    # Object ids should not change after compaction
-    assert_equal ids, new_ids
-
-    new_tenant = find_object_in_recycled_slot(addresses)
-    assert new_tenant
-
-    # This is the object that used to be in new_object's position
-    previous_tenant = list_of_objects[addresses.index(memory_location(new_tenant))]
-
-    assert_not_equal previous_tenant.object_id, new_tenant.object_id
-
-    # Should be able to look up object by object_id
-    assert_equal new_tenant, ObjectSpace._id2ref(new_tenant.object_id)
-
-    # Should be able to look up object by object_id
-    assert_equal previous_tenant, ObjectSpace._id2ref(previous_tenant.object_id)
-
-    int = (new_tenant.object_id >> 1)
-    # These two should be the same! but they are not :(
-    assert_equal int, ObjectSpace._id2ref(int.object_id)
-  end
-
-  def test_many_collisions
-    list_of_objects = big_list
-    ids       = list_of_objects.map(&:object_id)
-    addresses = list_of_objects.map(&self.:memory_location)
-
-    GC.compact
-
-    new_tenants = 10.times.map {
-      find_object_in_recycled_slot(addresses)
-    }
-
-    collisions = GC.stat(:object_id_collisions)
-    skip "couldn't get objects to collide" if collisions == 0
-    assert_operator collisions, :>, 0
-  end
-end
-- 
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