public static unsafe HugeStruct Create()
{
var instance = new HugeStruct();
Init(&instance);
instance.AssertValues();
return(instance);
}
public void EnumerationStressTest()
{
var hugeStruct = HugeStruct.Create();
for (var k = 0; k < 300; k++)
{
using var lifetimeDefinition = new LifetimeDefinition();
var lifetime = lifetimeDefinition.Lifetime;
var list = new LifetimedList <HugeStruct>();
// ReSharper disable once MethodSupportsCancellation
var task = Task.Factory.StartNew(() =>
{
for (var j = 0; j < 3; j++)
{
Task.Factory.StartNew(() =>
{
// ReSharper disable once AccessToDisposedClosure
using (lifetimeDefinition)
{
while (lifetime.IsAlive)
{
list.ClearValuesIfNotAlive();
}
}
}, TaskCreationOptions.AttachedToParent | TaskCreationOptions.LongRunning);
Task.Factory.StartNew(() =>
{
// ReSharper disable once AccessToDisposedClosure
using (lifetimeDefinition)
{
while (lifetime.IsAlive)
{
var copy = new List <ValueLifetimed <HugeStruct> >(); // fast enumeration
foreach (var lifetimed in list)
{
copy.Add(lifetimed);
}
foreach (var value in copy)
{
value.Value.AssertValues();
if (lifetime.IsNotAlive)
{
return;
}
}
}
}
}, TaskCreationOptions.AttachedToParent | TaskCreationOptions.LongRunning);
Task.Factory.StartNew(() =>
{
// ReSharper disable once AccessToDisposedClosure
using (lifetimeDefinition)
{
while (lifetime.IsAlive)
{
foreach (var value in list) // slow enumeration
{
value.Value.AssertValues();
if (lifetime.IsNotAlive)
{
return;
}
Thread.Sleep(1);
}
}
}
}, TaskCreationOptions.AttachedToParent | TaskCreationOptions.LongRunning);
}
});
Parallel.Invoke(() =>
{
using (lifetimeDefinition)
{
for (var i = 0; i < 100; i++)
{
using var localDef = lifetime.CreateNested();
for (var j = 0; j < i; j++)
{
list.Add(localDef.Lifetime, hugeStruct);
}
if (lifetime.IsNotAlive)
{
break;
}
}
}
}, () =>
{
var spinWait = new SpinWait();
for (var i = 0; i < 100; i++)
{
list.AddPriorityItem(lifetime, hugeStruct);
if (lifetime.IsNotAlive)
{
break;
}
spinWait.SpinOnce();
}
});
task.Wait();
}
}
