synchronization

I was wondering whenever exists a solution to perform synchronization in JavaScript code. For example I have the following case: I'm trying to cache some response values from AJAX call, the problem is, that it's possible to perform simultaneously several calls, therefore it leads to race condition in the code. So I'm very curious to find solution for that? Any one has idea that to do? I can offer a possible solution, but without seeing the code ... not completely sure what you are doing, but there is no reason why you couldn't do this. Basic code in jQuery : (not tested and abbreviated ... but

The app is written in Delphi XE. I have two classes, a TBoss and TWorker, which are both based of of TThread. The TBoss is a single instance thread, which starts up and then will create about 20 TWorker threads. When the boss creates a instance of TWorker it assigns it a method to call synchronize on, when the Worker has finished with what it's doing it calls this method which allows the Boss to access a record on the Worker. However I feel this is a problem, calling synchronize appears to be locking up the whole application - blocking the main (ui) thread. Really it should just be

I store some data in my iOS app directly in a local .sqlite file. I chose to do this instead of CoreData because the data will need to be compatible with non-Apple platforms. Now, I'm trying to come up with the best way to sync this file over iCloud. I know you can't sync it directly, for many reasons. I know CoreData is able to sync its DBs, but even ignoring that using CD would essentially lock this file into Apple platforms (I think? I've only looked into CD a bit), I need the iCloud syncing of this file to work across ALL of iCloud's supported platforms - which is supposed to include

It seems that these code snippets ought to behave identically: 1: Monitor.TryEnter(object) if (Monitor.TryEnter(lockObject)) { try { DoSomething(); } finally { Monitor.Exit(lockObject); } } 2: Monitor.TryEnter(object, ref bool) - introduced in .NET 4.0 bool lockAcquired; try { Monitor.TryEnter(lockObject, ref lockAcquired); if (lockAcquired) { DoSomething(); } } finally { if (lockAcquired) { Monitor.Exit(lockObject); } } I see from the MSDN documentation on the overload taking a ref bool parameter : If the lock was not taken because an exception was thrown, the variable specified for the

I have been working on a daily basis with the Java Memory Model for some years now. I think I have a good understanding about the concept of data races and the different ways to avoid them (e.g, synchronized blocks, volatile variables, etc). However, there's still something that I don't think I fully understand about the memory model, which is the way that final fields of classes are supposed to be thread safe without any further synchronization. So according to the specification, if an object is properly initialized (that is, no reference to the object escapes in its constructor in such a way

My current development project has two aspects to it. First, there is a public website where external users can submit and update information for various purposes. This information is then saved to a local SQL Server at the colo facility. The second aspect is an internal application which employees use to manage those same records (conceptually) and provide status updates, approvals, etc. This application is hosted within the corporate firewall with its own local SQL Server database. The two networks are connected by a hardware VPN solution, which is decent, but obviously not the speediest