//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldTellWhenTransactionsFromSnapshotHaveBeenClosed() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldTellWhenTransactionsFromSnapshotHaveBeenClosed()
{
// GIVEN
KernelTransactions transactions = NewKernelTransactions();
KernelTransaction a = GetKernelTransaction(transactions);
KernelTransaction b = GetKernelTransaction(transactions);
KernelTransaction c = GetKernelTransaction(transactions);
KernelTransactionsSnapshot snapshot = transactions.Get();
assertFalse(snapshot.AllClosed());
// WHEN a gets closed
a.Close();
assertFalse(snapshot.AllClosed());
// WHEN c gets closed and (test knowing too much) that instance getting reused in another transaction "d".
c.Close();
KernelTransaction d = GetKernelTransaction(transactions);
assertFalse(snapshot.AllClosed());
// WHEN b finally gets closed
b.Close();
assertTrue(snapshot.AllClosed());
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldBeAbleToSnapshotDuringHeavyLoad() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldBeAbleToSnapshotDuringHeavyLoad()
{
// GIVEN
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final KernelTransactions transactions = newKernelTransactions();
KernelTransactions transactions = NewKernelTransactions();
Race race = new Race();
const int threads = 50;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.concurrent.atomic.AtomicBoolean end = new java.util.concurrent.atomic.AtomicBoolean();
AtomicBoolean end = new AtomicBoolean();
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.concurrent.atomic.AtomicReferenceArray<KernelTransactionsSnapshot> snapshots = new java.util.concurrent.atomic.AtomicReferenceArray<>(threads);
AtomicReferenceArray <KernelTransactionsSnapshot> snapshots = new AtomicReferenceArray <KernelTransactionsSnapshot>(threads);
// Representing "transaction" threads
for (int i = 0; i < threads; i++)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int threadIndex = i;
int threadIndex = i;
race.AddContestant(() =>
{
ThreadLocalRandom random = ThreadLocalRandom.current();
while (!end.get())
{
try
{
using (KernelTransaction transaction = GetKernelTransaction(transactions))
{
KernelTransactionsSnapshot snapshot = null;
try
{
parkNanos(MILLISECONDS.toNanos(random.Next(3)));
if (snapshots.get(threadIndex) == null)
{
requireNonNull(transactions, "transactions is null");
snapshot = requireNonNull(transactions.Get(), "transactions.get() returned null");
snapshots.set(threadIndex, snapshot);
parkNanos(MILLISECONDS.toNanos(random.Next(3)));
}
}
catch (Exception e)
{
StringBuilder sb = (new StringBuilder("Gotcha!\n")).Append("threadIndex=").Append(threadIndex).Append('\n').Append("transaction=").Append(transaction).Append('\n').Append("snapshots=").Append(snapshots).Append('\n').Append("snapshot=").Append(snapshot).Append('\n').Append("end=").Append(end);
throw new Exception(sb.ToString(), e);
}
}
}
catch (TransactionFailureException e)
{
throw new Exception(e);
}
}
});
}
// Just checks snapshots
race.AddContestant(() =>
{
ThreadLocalRandom random = ThreadLocalRandom.current();
int snapshotsLeft = 1_000;
while (snapshotsLeft > 0)
{
int threadIndex = random.Next(threads);
KernelTransactionsSnapshot snapshot = snapshots.get(threadIndex);
if (snapshot != null && snapshot.AllClosed())
{
snapshotsLeft--;
snapshots.set(threadIndex, null);
}
}
// End condition of this test can be described as:
// when 1000 snapshots have been seen as closed.
// setting this boolean to true will have all other threads end as well so that race.go() will end
end.set(true);
});
// WHEN
race.Go();
}
