1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
require 'test/unit'
require '-test-/tracepoint'
class TestTracepointObj < Test::Unit::TestCase
def test_not_available_from_ruby
assert_raises ArgumentError do
TracePoint.trace(:obj_new){}
end
end
def test_tracks_objspace_events
result = Bug.tracepoint_track_objspace_events{
99
'abc'
v="foobar"
Object.new
nil
}
newobj_count, free_count, gc_start_count, *newobjs = *result
assert_equal 2, newobj_count
assert_equal 2, newobjs.size
assert_equal 'foobar', newobjs[0]
assert_equal Object, newobjs[1].class
stat1 = {}
stat2 = {}
GC.stat(stat1)
result = Bug.tracepoint_track_objspace_events{
1_000_000.times{''}
}
GC.stat(stat2)
newobj_count, free_count, gc_start_count, *newobjs = *result
assert_operator stat2[:total_allocated_object] - stat1[:total_allocated_object], :>=, newobj_count
assert_operator stat2[:total_freed_object] - stat1[:total_freed_object], :>=, free_count
assert_operator stat2[:count] - stat1[:count], :==, gc_start_count
end
end
|
