Ok I got it. Here’s what worked for me. Check out a working copy Then go in Windows explorer menu, TortoiseSVN -> Check for modifications… Click on Check repository button Select All the files, right click and select the break lock option Delete the working copy and the one in repository. Voila! 🙂
The answer to this question is much easier now: – Use Row Based Replication and Read Committed isolation level. The locking you were experiencing disappears. Longer explaination: http://harrison-fisk.blogspot.com/2009/02/my-favorite-new-feature-of-mysql-51.html
Had this issue after a reinstall today. Make sure the Application Experience service is started and not set to disabled. If its set to manual, I believe VS will start it.
While I can’t be sure this applies to every compiler / version of std libs but in the code-base I’m using std::cout::operator<<() it is already thread-safe. I’m assuming that what you’re really trying to do it stop std::cout from mixing string when concatenating with the operator<< multiple time per string, across multiple threads. The reason … Read more
As the exception occurs internally in the Dictionary code, it means that you are accessing the same Dictionary instance from more than one thread at the same time. You need to synchronise the code in the GetInstance method so that only one thread at a time accesses the Dictionary. Edit: Lock around the accesses separately, … Read more
Personally I almost never lock on “this”. I usually lock on a privately held reference which I know that no other code is going to lock on. If you lock on “this” then any other code which knows about your object might choose to lock on it. While it’s unlikely to happen, it certainly could … Read more
If I understand your question correctly, it sounds like you would like to force a table lock for purposes of testing. To do that with SQL Server, you can create and run a stored procedure that will cause an exclusive table lock on the table of interest. While that lock is active, you can run … Read more
Take a look at the following system stored procedures, which you can run in SQLServer Management Studio (SSMS): sp_who sp_lock Also, in SSMS, you can view locks and processes in different ways: Different versions of SSMS put the activity monitor in different places. For example, SSMS 2008 and 2012 have it in the context menu … Read more
From CMU 15-721 (Spring 2016), lecture 6 presentation, slides 25 and 26, which cites A Survey of B-Tree Locking Techniques by Goetz Graefe: Locks → Protects the index’s logical contents from other txns. → Held for txn duration. → Need to be able to rollback changes. Latches → Protects the critical sections of the index’s … Read more
When another thread comes by and wants to execute the code, how long will it wait until the lock is released? lock will block the the thread trying to enter the lock indefinitely until the object being locked on is released. can you somehow set a timeout? If you need to specify a timeout, use … Read more