public void No_deadlock_and_no_race_condition_on_resources()
{
var mgr = new LockManager();
var watch = new Stopwatch();
watch.Start();
int iterations = 10_000;
Parallel.For(0, iterations, i =>
{
Parallel.Invoke(
() => mgr.DoWithReadLock(ReadAbc, "a", "b", "c"),
() => mgr.DoWithReadLock(ReadA, "a"),
() => mgr.DoWithWriteLock(WriteAbc, "a", "b", "c"),
() => mgr.DoWithWriteLock(WriteA, "a")
);
});
watch.Stop();
Console.WriteLine($"{iterations} iterations took {watch.ElapsedMilliseconds} ms");
Console.WriteLine($"retries = {mgr.Retries}");
Console.WriteLine($"a = {_resourceA.Count} b = {_resourceB.Count} c = {_resourceC.Count}");
int locks = mgr.GetCurrentlyHoldLocks();
Assert.AreEqual(0, locks);
}
public void Mixed_use_of_sessions_and_simple_accesses_simulating_both_transactional_and_non_transactional_clients()
{
var mgr = new LockManager();
var watch = new Stopwatch();
watch.Start();
int iterations = 100;
Parallel.For(0, iterations, i =>
{
Parallel.Invoke(
() =>
{
for (int i = 0; i < iterations; i++)
{
var session = Guid.NewGuid();
mgr.AcquireLock(session, false, "a", "b", "c");
ReadAbc();
mgr.CloseSession(session);
}
},
() =>
{
for (int i = 0; i < iterations; i++)
{
var session = Guid.NewGuid();
mgr.AcquireLock(session, false, "a");
ReadA();
mgr.CloseSession(session);
}
},
() =>
{
for (int i = 0; i < iterations; i++)
{
var session = Guid.NewGuid();
mgr.AcquireLock(session, true, "a", "b", "c");
WriteAbc();
mgr.CloseSession(session);
}
},
() =>
{
for (int i = 0; i < iterations; i++)
{
var session = Guid.NewGuid();
mgr.AcquireLock(session, true, "a");
WriteA();
mgr.CloseSession(session);
}
},
() =>
{
for (int i = 0; i < 100; i++)
{
mgr.DoWithReadLock(ReadAbc, "a", "b", "c");
}
},
() =>
{
for (int i = 0; i < 100; i++)
{
mgr.DoWithReadLock(ReadA, "a");
}
},
() =>
{
for (int i = 0; i < 100; i++)
{
mgr.DoWithWriteLock(WriteAbc, "a", "b", "c");
}
},
() =>
{
for (int i = 0; i < 100; i++)
{
mgr.DoWithWriteLock(WriteA, "a");
}
});
});
watch.Stop();
Console.WriteLine($"{iterations} iterations took {watch.ElapsedMilliseconds} ms");
Console.WriteLine($"retries = {mgr.Retries}");
Console.WriteLine($"a = {_resourceA.Count} b = {_resourceB.Count} c = {_resourceC.Count}");
int locks = mgr.GetCurrentlyHoldLocks();
Assert.AreEqual(0, locks);
}
