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author | Aidan Haran <aidanharan@yahoo.com> | 2017-12-09 13:41:02 +0000 |
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committer | GitHub <noreply@github.com> | 2017-12-09 13:41:02 +0000 |
commit | 66f34a8ea58c8c98d9cc2651d386c9e5a0789d08 (patch) | |
tree | d24e9014cf9045abc892ba97ac993e2e26e31c7e /activesupport/test/concurrency | |
parent | 3291fa3630c456450f8c6a9b771f77c293d036cd (diff) | |
parent | 55d4cf2a9c1a6e77ed7aedb866e964039bb4a143 (diff) | |
download | rails-66f34a8ea58c8c98d9cc2651d386c9e5a0789d08.tar.gz rails-66f34a8ea58c8c98d9cc2651d386c9e5a0789d08.tar.bz2 rails-66f34a8ea58c8c98d9cc2651d386c9e5a0789d08.zip |
Merge branch 'master' into custom-discarded-job-handling
Diffstat (limited to 'activesupport/test/concurrency')
-rw-r--r-- | activesupport/test/concurrency/load_interlock_aware_monitor_test.rb | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/activesupport/test/concurrency/load_interlock_aware_monitor_test.rb b/activesupport/test/concurrency/load_interlock_aware_monitor_test.rb new file mode 100644 index 0000000000..2d0f45ec5f --- /dev/null +++ b/activesupport/test/concurrency/load_interlock_aware_monitor_test.rb @@ -0,0 +1,55 @@ +# frozen_string_literal: true + +require "abstract_unit" +require "concurrent/atomic/count_down_latch" +require "active_support/concurrency/load_interlock_aware_monitor" + +module ActiveSupport + module Concurrency + class LoadInterlockAwareMonitorTest < ActiveSupport::TestCase + def setup + @monitor = ActiveSupport::Concurrency::LoadInterlockAwareMonitor.new + end + + def test_entering_with_no_blocking + assert @monitor.mon_enter + end + + def test_entering_with_blocking + load_interlock_latch = Concurrent::CountDownLatch.new + monitor_latch = Concurrent::CountDownLatch.new + + able_to_use_monitor = false + able_to_load = false + + thread_with_load_interlock = Thread.new do + ActiveSupport::Dependencies.interlock.running do + load_interlock_latch.count_down + monitor_latch.wait + + @monitor.synchronize do + able_to_use_monitor = true + end + end + end + + thread_with_monitor_lock = Thread.new do + @monitor.synchronize do + monitor_latch.count_down + load_interlock_latch.wait + + ActiveSupport::Dependencies.interlock.loading do + able_to_load = true + end + end + end + + thread_with_load_interlock.join + thread_with_monitor_lock.join + + assert able_to_use_monitor + assert able_to_load + end + end + end +end |