require_relative 'spec_helper' require_relative '../../core/thread/shared/wakeup' load_extension("thread") class Thread def self.capi_thread_specs=(t) @@capi_thread_specs = t end def call_capi_rb_thread_wakeup @@capi_thread_specs.rb_thread_wakeup(self) end end describe "C-API Thread function" do before :each do @t = CApiThreadSpecs.new ScratchPad.clear Thread.capi_thread_specs = @t end describe "rb_thread_wait_for" do it "sleeps the current thread for the give amount of time" do start = Time.now @t.rb_thread_wait_for(0, 100_000) (Time.now - start).should be_close(0.1, 0.2) end end describe "rb_thread_alone" do it "returns true if there is only one thread" do pred = Thread.list.size == 1 @t.rb_thread_alone.should == pred end end describe "rb_thread_current" do it "equals Thread.current" do @t.rb_thread_current.should == Thread.current end end describe "rb_thread_local_aref" do it "returns the value of a thread-local variable" do thr = Thread.current sym = :thread_capi_specs_aref thr[sym] = 1 @t.rb_thread_local_aref(thr, sym).should == 1 end it "returns nil if the value has not been set" do @t.rb_thread_local_aref(Thread.current, :thread_capi_specs_undefined).should be_nil end end describe "rb_thread_local_aset" do it "sets the value of a thread-local variable" do thr = Thread.current sym = :thread_capi_specs_aset @t.rb_thread_local_aset(thr, sym, 2).should == 2 thr[sym].should == 2 end end describe "rb_thread_wakeup" do it_behaves_like :thread_wakeup, :call_capi_rb_thread_wakeup end describe "rb_thread_create" do it "creates a new thread" do obj = Object.new proc = lambda { |x| ScratchPad.record x } thr = @t.rb_thread_create(proc, obj) thr.should be_kind_of(Thread) thr.join ScratchPad.recorded.should == obj end it "handles throwing an exception in the thread" do prc = lambda { |x| Thread.current.report_on_exception = false raise "my error" } thr = @t.rb_thread_create(prc, nil) thr.should be_kind_of(Thread) lambda { thr.join }.should raise_error(RuntimeError, "my error") end it "sets the thread's group" do thr = @t.rb_thread_create(lambda { |x| }, nil) begin thread_group = thr.group thread_group.should be_an_instance_of(ThreadGroup) ensure thr.join end end end describe "rb_thread_call_without_gvl" do it "runs a C function with the global lock unlocked" do thr = Thread.new do @t.rb_thread_call_without_gvl end # Wait until it's blocking... Thread.pass while thr.status and thr.status != "sleep" # The thread status is set to sleep by rb_thread_call_without_gvl(), # but the thread might not be in the blocking read(2) yet, so wait a bit. sleep 0.1 # Wake it up, causing the unblock function to be run. thr.wakeup # Make sure it stopped thr.join(1).should_not be_nil # And we got a proper value thr.value.should be_true end end end