Exemple #1
0
        public void GetEnumerator_IterateItems_DataMatches()
        {
            var name = Guid.NewGuid().ToString();
            Random r = new Random();
            int bufSize = 1024;
            byte[] data = new byte[bufSize];
            byte[] readBuf = new byte[bufSize];
            using (var sma = new Array<byte>(name, bufSize))
            {
                sma.Write(data);

                int value = 0;
                foreach (var item in sma)
                {
                    Assert.AreEqual(data[value], item);
                    value++;
                }
            }
        }
Exemple #2
0
        public void AcquireWriteLock_ReadWrite_LocksCorrectly()
        {
            var name = Guid.NewGuid().ToString();
            Random r = new Random();
            int bufSize = 1024;
            byte[] data = new byte[bufSize];
            byte[] readBuf = new byte[bufSize];

            bool readIsFirst = false;
            bool readBlocked = false;
            int syncValue = 0;

            // Fill with random data
            r.NextBytes(data);

            using (var sma = new Array<byte>(name, bufSize))
            {
                // Acquire write lock early
                sma.AcquireWriteLock();
                using (var smr = new Array<byte>(name))
                {
                    var t1 = Task.Factory.StartNew(() =>
                        {
                            if (System.Threading.Interlocked.Exchange(ref syncValue, 1) == 0)
                                readIsFirst = true;
                            // Should block until write lock is released
                            smr.AcquireReadLock();
                            if (System.Threading.Interlocked.Exchange(ref syncValue, 3) == 4)
                                readBlocked = true;
                            smr.CopyTo(readBuf);
                            smr.ReleaseReadLock();
                        });

                    System.Threading.Thread.Sleep(10);

                    var t2 = Task.Factory.StartNew(() =>
                        {
                            var val = System.Threading.Interlocked.Exchange(ref syncValue, 2);
                            if (val == 0)
                                readIsFirst = false;
                            else if (val == 3)
                                readBlocked = false;
                            System.Threading.Thread.Sleep(10);
                            sma.Write(data);
                            System.Threading.Interlocked.Exchange(ref syncValue, 4);
                            sma.ReleaseWriteLock();
                        });

                    Task.WaitAll(t1, t2);

                    Assert.IsTrue(readIsFirst, "The read thread did not enter first.");
                    Assert.IsTrue(readBlocked, "The read thread did not block.");

                    // Check data was written before read
                    for (var i = 0; i < readBuf.Length; i++)
                    {
                        Assert.AreEqual(data[i], readBuf[i]);
                    }
                }
            }
        }
Exemple #3
0
 public void Write_NullArray_ThrowsException()
 {
     var name = Guid.NewGuid().ToString();
     using (var sma = new Array<int>(name, 10))
     {
         bool exceptionThrown = false;
         try
         {
             sma.Write(null);
         }
         catch (ArgumentNullException)
         {
             exceptionThrown = true;
         }
         Assert.IsTrue(exceptionThrown, "null buffer should result in ArgumentNullException");
     }
 }