/// <summary>
/// Performs a commit
/// </summary>
/// <param name="workspaceId">Workspace ID</param>
/// <param name="changeSet">Changes to commit</param>
/// <returns>Changes which were commited</returns>
public CommitResult <Guid> Commit(Guid workspaceId, IsolatedChangeSet <Guid, object, EdgeData> changeSet)
{
bool isSnapshotIsolation = workspaceStateProvider.WorkspaceIsolationLevel(workspaceId) == IsolationLevel.Snapshot;
if (isSnapshotIsolation)
{
workspaceExclusiveLockProvider.EnterLockExclusive();
}
try
{
lock (commitSync)
{
if (!workspaceStateProvider.IsWorkspaceExpired(workspaceId))
{
var result = commitDataService.AcceptCommit(changeSet);
workspaceStateProvider.UpdateWorspace(workspaceId, result.ResultSnapshotId);
subscriptionManagerService.InvokeEvents(workspaceId, result);
return(result);
}
else
{
throw new TimeoutException("Workspace timeout has elapsed");
}
}
}
finally
{
if (isSnapshotIsolation)
{
workspaceExclusiveLockProvider.ExitLockExclusive();
}
}
}
public void TestMethod1()
{
int nrThreads = 33;
int nrRepeats = 300;
int counter = 0;
for (int j = 0; j < nrRepeats; j++)
{
WorkspaceExclusiveLockProvider provider = new WorkspaceExclusiveLockProvider();
Collection <Thread> threads = new Collection <Thread>();
for (int i = 0; i < nrThreads; i++)
{
Thread t = new Thread(() =>
{
provider.EnterLockExclusive();
Interlocked.Increment(ref counter);
Assert.AreEqual(1, counter);
Interlocked.Decrement(ref counter);
provider.ExitLockExclusive();
});
threads.Add(t);
}
foreach (var t in threads)
{
t.Start();
}
foreach (var t in threads)
{
t.Join();
}
}
}
/// <summary>
/// Updates given worksapce isolation level to snapshot.
/// If given workspace isoaltion level is read only workspace isolation level cannot be updated and exception will be thrown.
/// </summary>
/// <typeparam name="TDataType"></typeparam>
/// <param name="workspace"></param>
public void UpdateWorkspaceToSnapshot <TDataType>(Workspace <TDataType> workspace)
{
workspaceExclusiveLockProvider.ExitLockExclusive();
workspace.ChangeIsolationLevel(IsolationLevel.Snapshot);
}