Deadlock in System.Component.TypeDescriptor [closed]
Deadlock in System.Component.TypeDescriptor [closed]
Deadlock in System.Component.TypeDescriptor [closed]
Lock is a questionable idea in JS which is intended to be threadless and not needing concurrency protection. You’re looking to combine calls on deferred execution. The pattern I follow for this is the use of callbacks. Something like this: var functionLock = false; var functionCallbacks = []; var lockingFunction = function (callback) { if … Read more
A deadlock will only occur if you have more than one lock. You need a situation where both threads hold a resource that the other needs (which means there has to be a least two resources, and the two threads have to attempt to acquire them in a different order) So a simple example: // … Read more
Generally all modifications can cause a deadlock and selects will not (get to that later). So No you cannot ignore these. You can somewhat ignore select depending on your database and settings but the others will give you deadlocks. You don’t even need multiple tables. The best way to create a deadlock is to do … Read more
You can use a deadlock graph and gather the information you require from the log file. The only other way I could suggest is digging through the information by using EXEC SP_LOCK (Soon to be deprecated), EXEC SP_WHO2 or the sys.dm_tran_locks table. SELECT L.request_session_id AS SPID, DB_NAME(L.resource_database_id) AS DatabaseName, O.Name AS LockedObjectName, P.object_id AS LockedObjectId, … Read more
Writing deadlock-proof code is really hard. Even when you access the tables in the same order you may still get deadlocks [1]. I wrote a post on my blog that elaborates through some approaches that will help you avoid and resolve deadlock situations. If you want to ensure two statements/transactions will never deadlock you may … Read more
Your monitorWorker never dies. When all the workers finish, it continues to wait on cs. This deadlocks because nothing else will ever send on cs and therefore wg will never reach 0. A possible fix is to have the monitor close the channel when all workers finish. If the for loop is in main, it … Read more
The technique you describe isn’t just common: it’s the one technique that has been proven to work all the time. There are a few other rules you should follow when coding threaded code in C++, though, among which the most important may be: don’t hold a lock when calling a virtual function: even if at … Read more
Jack and Jill happens to want to make a sandwich at the same time. Both need a slice of bread, so they both goes to get the loaf of bread and a knife. Jack gets the knife first, while Jill gets the loaf of bread first. Now Jack tries to find the loaf of bread … Read more
static object object1 = new object(); static object object2 = new object(); public static void ObliviousFunction() { lock (object1) { Thread.Sleep(1000); // Wait for the blind to lead lock (object2) { } } } public static void BlindFunction() { lock (object2) { Thread.Sleep(1000); // Wait for oblivion lock (object1) { } } } static void … Read more