internal static Task CallNext(IGrainFactory grainFactory, List <Tuple <long, bool> > callChain, int currCallIndex)
{
if (currCallIndex >= callChain.Count)
{
return(TaskDone.Done);
}
Tuple <long, bool> next = callChain[currCallIndex];
bool call_1 = (currCallIndex % 2) == 1; // odd (1) call 1, even (zero) - call 2.
if (next.Item2)
{
IDeadlockNonReentrantGrain nextGrain = grainFactory.GetGrain <IDeadlockNonReentrantGrain>(next.Item1);
if (call_1)
{
return(nextGrain.CallNext_1(callChain, currCallIndex + 1));
}
else
{
return(nextGrain.CallNext_2(callChain, currCallIndex + 1));
}
}
else
{
IDeadlockReentrantGrain nextGrain = grainFactory.GetGrain <IDeadlockReentrantGrain>(next.Item1);
if (call_1)
{
return(nextGrain.CallNext_1(callChain, currCallIndex + 1));
}
else
{
return(nextGrain.CallNext_2(callChain, currCallIndex + 1));
}
}
}
public async Task DeadlockDetection_3()
{
long baseGrainId = random.Next();
long cBase = 200;
for (int i = 0; i < numIterations; i++)
{
long grainId = baseGrainId + i;
IDeadlockReentrantGrain firstGrain = this.fixture.GrainFactory.GetGrain <IDeadlockReentrantGrain>(grainId);
List <Tuple <long, bool> > callChain = new List <Tuple <long, bool> >();
callChain.Add(new Tuple <long, bool>(cBase + grainId, false));
callChain.Add(new Tuple <long, bool>(grainId, true));
callChain.Add(new Tuple <long, bool>(cBase + grainId, false));
callChain.Add(new Tuple <long, bool>(grainId, true));
try
{
await firstGrain.CallNext_1(callChain, 1);
}
catch (Exception exc)
{
Exception baseExc = exc.GetBaseException();
this.fixture.Logger.Info(baseExc.Message);
Assert.Equal(typeof(DeadlockException), baseExc.GetType());
DeadlockException deadlockExc = (DeadlockException)baseExc;
Assert.Equal(callChain.Count, deadlockExc.CallChain.Count());
}
}
}
public async Task DeadlockDetection_4()
{
long cBase = 200;
for (int i = 0; i < numIterations; i++)
{
long grainId = i;
IDeadlockReentrantGrain firstGrain = GrainClient.GrainFactory.GetGrain <IDeadlockReentrantGrain>(grainId);
List <Tuple <long, bool> > callChain = new List <Tuple <long, bool> >();
callChain.Add(new Tuple <long, bool>(cBase + grainId, false));
callChain.Add(new Tuple <long, bool>(cBase + grainId, false));
await firstGrain.CallNext_1(callChain, 1);
}
}
// 4) No Deadlock X, X
public async Task DeadlockDetection_4()
{
long baseGrainId = this.Random.Next();
long xBase = 1000;
for (int i = 0; i < this.NumIterations; i++)
{
long grainId = baseGrainId + i;
IDeadlockReentrantGrain firstGrain = this.Fixture.GrainFactory.GetGrain <IDeadlockReentrantGrain>(grainId);
List <Tuple <long, bool> > callChain = new List <Tuple <long, bool> >();
callChain.Add(new Tuple <long, bool>(xBase + grainId, false));
callChain.Add(new Tuple <long, bool>(xBase + grainId, false));
await firstGrain.CallNext_1(callChain, 1);
}
}
public async Task DeadlockDetection_3()
{
long baseGrainId = random.Next();
long cBase = 200;
for (int i = 0; i < numIterations; i++)
{
long grainId = baseGrainId + i;
IDeadlockReentrantGrain firstGrain = this.fixture.GrainFactory.GetGrain <IDeadlockReentrantGrain>(grainId);
List <Tuple <long, bool> > callChain = new List <Tuple <long, bool> >();
callChain.Add(new Tuple <long, bool>(cBase + grainId, false));
callChain.Add(new Tuple <long, bool>(grainId, true));
callChain.Add(new Tuple <long, bool>(cBase + grainId, false));
callChain.Add(new Tuple <long, bool>(grainId, true));
await Assert.ThrowsAsync <DeadlockException>(() => firstGrain.CallNext_1(callChain, 1));
}
}