public void WriteLocking() { var d = new SnapDictionary <int, string>(); d.Test.CollectAuto = false; // gen 1 d.Set(1, "one"); Assert.AreEqual(1, d.Test.GetValues(1).Length); Assert.AreEqual(1, d.Test.LiveGen); Assert.IsTrue(d.Test.NextGen); var s1 = d.CreateSnapshot(); Assert.AreEqual(1, s1.Gen); Assert.AreEqual(1, d.Test.LiveGen); Assert.IsFalse(d.Test.NextGen); Assert.AreEqual("one", s1.Get(1)); // gen 2 Assert.AreEqual(1, d.Test.GetValues(1).Length); d.Set(1, "uno"); Assert.AreEqual(2, d.Test.GetValues(1).Length); Assert.AreEqual(2, d.Test.LiveGen); Assert.IsTrue(d.Test.NextGen); var s2 = d.CreateSnapshot(); Assert.AreEqual(2, s2.Gen); Assert.AreEqual(2, d.Test.LiveGen); Assert.IsFalse(d.Test.NextGen); Assert.AreEqual("uno", s2.Get(1)); using (d.GetWriter(GetScopeProvider())) { // gen 3 Assert.AreEqual(2, d.Test.GetValues(1).Length); d.Set(1, "ein"); Assert.AreEqual(3, d.Test.GetValues(1).Length); Assert.AreEqual(3, d.Test.LiveGen); Assert.IsTrue(d.Test.NextGen); var s3 = d.CreateSnapshot(); Assert.AreEqual(2, s3.Gen); Assert.AreEqual(3, d.Test.LiveGen); Assert.IsTrue(d.Test.NextGen); // has NOT changed when (non) creating snapshot Assert.AreEqual("uno", s3.Get(1)); } var s4 = d.CreateSnapshot(); Assert.AreEqual(3, s4.Gen); Assert.AreEqual(3, d.Test.LiveGen); Assert.IsFalse(d.Test.NextGen); Assert.AreEqual("ein", s4.Get(1)); }
public void NestedWriteLocking() { var d = new SnapDictionary <int, string>(); d.Test.CollectAuto = false; var scopeProvider = GetScopeProvider(); using (d.GetWriter(scopeProvider)) { using (d.GetWriter(scopeProvider)) { d.Set(1, "one"); } } }
public void WriteLockingFirstSnapshot() { var d = new SnapDictionary <int, string>(); d.Test.CollectAuto = false; // gen 1 d.Set(1, "one"); Assert.AreEqual(1, d.Test.GetValues(1).Length); Assert.AreEqual(1, d.Test.LiveGen); Assert.IsTrue(d.Test.NextGen); using (d.GetWriter(GetScopeProvider())) { var s1 = d.CreateSnapshot(); Assert.AreEqual(0, s1.Gen); Assert.AreEqual(1, d.Test.LiveGen); Assert.IsTrue(d.Test.NextGen); Assert.IsNull(s1.Get(1)); } var s2 = d.CreateSnapshot(); Assert.AreEqual(1, s2.Gen); Assert.AreEqual(1, d.Test.LiveGen); Assert.IsFalse(d.Test.NextGen); Assert.AreEqual("one", s2.Get(1)); }
public void ScopeLocking2() { var d = new SnapDictionary <int, string>(); d.Test.CollectAuto = false; // gen 1 d.Set(1, "one"); var s1 = d.CreateSnapshot(); Assert.AreEqual(1, s1.Gen); Assert.AreEqual("one", s1.Get(1)); d.Set(1, "uno"); var s2 = d.CreateSnapshot(); Assert.AreEqual(2, s2.Gen); Assert.AreEqual("uno", s2.Get(1)); var scopeProviderMock = new Mock <IScopeProvider>(); var scopeContext = new ScopeContext(); scopeProviderMock.Setup(x => x.Context).Returns(scopeContext); var scopeProvider = scopeProviderMock.Object; using (d.GetWriter(scopeProvider)) { // creating a snapshot in a write-lock does NOT return the "current" content // it uses the previous snapshot, so new snapshot created only on release d.Set(1, "ein"); var s3 = d.CreateSnapshot(); Assert.AreEqual(2, s3.Gen); Assert.AreEqual("uno", s3.Get(1)); // but live snapshot contains changes var ls = d.Test.LiveSnapshot; Assert.AreEqual("ein", ls.Get(1)); Assert.AreEqual(3, ls.Gen); } var s4 = d.CreateSnapshot(); Assert.AreEqual(2, s4.Gen); Assert.AreEqual("uno", s4.Get(1)); scopeContext.ScopeExit(false); var s5 = d.CreateSnapshot(); Assert.AreEqual(2, s5.Gen); Assert.AreEqual("uno", s5.Get(1)); }