summaryrefslogtreecommitdiff
path: root/test/test_sync.rb
blob: e3294ff82480a345c77d43f3693b2ecf1c7d9f08 (plain)
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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
# frozen_string_literal: false
require 'test/unit'
require 'sync'
require 'timeout'

class SyncTest < Test::Unit::TestCase
  class Tester
    include Sync_m
  end

  def test_sync_lock_and_wakeup
    tester = Tester.new

    tester.sync_lock(:EX)

    t = Thread.new { tester.sync_lock(:EX) }

    sleep 0.1 until t.stop?
    t.wakeup
    sleep 0.1 until t.stop?

    assert_equal(tester.sync_waiting.uniq, tester.sync_waiting)
  ensure
    t.kill
    t.join
  end

  def test_sync_upgrade_and_wakeup
    tester = Tester.new
    tester.sync_lock(:SH)

    t = Thread.new do
      tester.sync_lock(:SH)
      tester.sync_lock(:EX)
    end

    sleep 0.1 until t.stop?
    t.wakeup
    sleep 0.1 until t.stop?

    tester.sync_upgrade_waiting.each { |ary|
      assert(!tester.sync_waiting.include?(ary[0]))
    }
    assert_equal(tester.sync_waiting.uniq, tester.sync_waiting)
    assert_equal(tester.sync_waiting, [])
  ensure
    t.kill
    t.join
  end

  def test_sync_lock_and_raise
    tester= Tester.new
    tester.sync_lock(:EX)

    t = Thread.new {
      assert_raise(RuntimeError) {
        tester.sync_lock(:EX)
      }
    }

    sleep 0.1 until t.stop?
    sleep 1 if RubyVM::MJIT.enabled? # t.stop? behaves unexpectedly with --jit-wait
    t.raise
    t.join

    assert_equal(tester.sync_waiting.uniq, tester.sync_waiting)
    assert_equal(tester.sync_waiting, [])
  end
end