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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
ruby_version_is "" ... "1.9" do
describe "Thread.critical=" do
before(:each) do
ScratchPad.clear
end
it "is a persistent attribute" do
Thread.critical = true
Thread.critical.should == true
Thread.critical = false
ThreadSpecs.critical_is_reset.should == true
end
it "allows all non-bool arguments" do
Thread.critical = "Hello"
Thread.critical.should == true
Thread.critical = nil
ThreadSpecs.critical_is_reset.should == true
end
it "functions as a critical section" do
ThreadSpecs.counter = 0
iters = 50
t = Thread.new { ThreadSpecs.increment_counter(iters) }
ThreadSpecs.increment_counter(iters)
t.join
ThreadSpecs.counter.should == iters * 2
end
it "does not change status of other existing threads" do
t = ThreadSpecs.create_critical_thread { ScratchPad.record Thread.main.status }
Thread.pass while t.status and t.status != false
ScratchPad.recorded.should == "run"
end
it "is reentrant" do
Thread.critical = true
Thread.critical = true
Thread.critical.should == true
Thread.critical = false
Thread.critical = false
ThreadSpecs.critical_is_reset.should == true
end
it "can be mismatched" do
Thread.critical = true
Thread.critical = true
Thread.critical.should == true
Thread.critical = false
ThreadSpecs.critical_is_reset.should == true
end
# Hangs on 1.8.6.114 OS X, possibly also on Linux
quarantine! do
it "schedules other threads on Thread.pass" do
ThreadSpecs.critical_thread_yields_to_main_thread { Thread.pass }
end
it "schedules other threads on sleep" do
ThreadSpecs.critical_thread_yields_to_main_thread(true) { sleep }
end
end
it "schedules other threads on Thread.stop" do
# Note that Thread.Stop resets Thread.critical, whereas sleep does not
ThreadSpecs.critical_thread_yields_to_main_thread(false, true) { Thread.stop }
end
it "defers exit" do
critical_thread = ThreadSpecs.create_and_kill_critical_thread()
Thread.pass while critical_thread.status
ScratchPad.recorded.should == "status=aborting"
end
it "defers exit until Thread.pass" do
critical_thread = ThreadSpecs.create_and_kill_critical_thread(true)
Thread.pass while critical_thread.status
ScratchPad.recorded.should == nil
end
not_compliant_on(:ironruby) do # requires green threads so that another thread can be scheduled when the critical thread is killed
it "is not reset if the critical thread is killed" do
critical_thread = ThreadSpecs.create_and_kill_critical_thread(true)
Thread.pass while critical_thread.status
Thread.critical.should == true
Thread.critical = false
ThreadSpecs.critical_is_reset.should == true
end
end
end
end
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