System.Threading.Tests.ReaderWriterLockTests.WaitingWritersTest C# (CSharp) Method

        public static void WaitingWritersTest()
        {
            var trwl = new TestReaderWriterLock();
            trwl.AcquireReaderLock();

            Action acquireReleaseWriterLock =
                () =>
                {
                    trwl.AcquireWriterLock();
                    trwl.ReleaseWriterLock();
                };
            Action waitForWaitingWriter1, waitForWaitingWriter2;
            Thread waitingWriter1 = ThreadTestHelpers.CreateGuardedThread(out waitForWaitingWriter1, acquireReleaseWriterLock);
            Thread waitingWriter2 = ThreadTestHelpers.CreateGuardedThread(out waitForWaitingWriter2, acquireReleaseWriterLock);
            waitingWriter1.IsBackground = true;
            waitingWriter2.IsBackground = true;
            waitingWriter1.Start();
            waitingWriter2.Start();
            ThreadTestHelpers.WaitForCondition(() => (waitingWriter1.ThreadState & ThreadState.WaitSleepJoin) != 0);
            ThreadTestHelpers.WaitForCondition(() => (waitingWriter2.ThreadState & ThreadState.WaitSleepJoin) != 0);

            // Releasing the read lock releases a waiting writer, that writer releases its write lock, in turn releasing the
            // other writer
            trwl.ReleaseReaderLock();
            waitForWaitingWriter1();
            waitForWaitingWriter2();

            trwl.Dispose();
        }