In my android project i have a sync adapter that will sync data from android device to the server and its working fine, but recently i noticed that the onPerfomSync is not calling in my moto g3 and...

Let's say I have two threads running like this: Thread A which performs computation while updating pixels of a shared image Thread B periodically reads the image and copies it to the screen Thr...

I currently have my Android app set up to use the AccountManager feature of Android, using a SyncAdapter and an authenticated account to performs syncs automatically. I only have 1 sync adapter ru...

The app I have a web app that currently uses AppCache for offline functionality since users of the system need to create documents offline. The document is first created offline and when internet a...

I have a multithreaded Java code in which: several threads read stateful objects from the synchronized shared storage (i.e. as a result of this, some threads may reference the same objects); each...

I have once scenario in which user capturing the concert scene with the realtime audio of the performer and at the same time device is downloading the live streaming from audio broadcaster device.l...

I am trying to figure out that my synchronize("Group_Name") gets skipped if I try to sync different values through it , why is it so . Consider the following issue . I have a SyncGroup named - "G...

Here, I am developing a project with java sockets and I have a problem with the implementation of the correct time synchronization between Server and Client. I am going to describe the problem with...

Please clarify my queries regarding Singleton and Multithreading: What is the best way to implement Singleton in Java, in a multithreaded environment? What happens when multiple threads try to ac...

I am trying to understand exactly how element visibility works on arrays in java. Given the class: class IntList { private final int[] array; public IntList(int[] array) { this.array = array...

I am using OpenCV to capture video streams from two USB webcams (Microsoft LifeCam Studio) in Ubuntu 14.04. I am using very simple VideoCapture code (source here) and am trying to at least view two...

I use CloudKit and Core Data with Swift to synchronize my data. Therefore I created Subscriptions and after getting a notification I fetch the new data from the cloud to update my Core Data. This i...

I was looking for a portable script or command line program that can synchronize two MySQL databases schema. I am not looking for a GUI based solution because that can't be automated or run with th...

I have a C# library that would like to have the ability to Send/Post work to the "main" ui thread (if one exists). This library may be used by: A winforms application A native application (with U...

In a nice article with some concurrency tips, an example was optimized to the following lines: double getBalance() { Account acct = verify(name, password); synchronized(acct) { return acct.balan...

How to create ICS in rails and send it as a attchment in a mail?

Im quite new to iOS programming and now want to implement a periodic background synchronization to synchronize my server data with client data. What I want to achieve is comparable with Androids Sy...

Is it possible to make AsyncTask.doInBackground synchronized - or achieve the same result in another way? class SynchronizedTask extends AsyncTask { @Override protected synchronized Integer doI...

Is synchronizing a method equivalent to letting only one thread to evaluate it until it's out of scope including inner method calls? For example: public synchronized void foo(){ if(critical con...

Synchronization works correctly in this code: class PrintNumbers { synchronized public void display() { System.out.println("in display"); for (int i = 0; i < 3; i++) { System.out.println("...

I'm dying with physics , i've tried to use setVelocity however i got slightly different result from different devices. I've tested on iPhone 5 (on simulator) and iPhone 6 (real device) The Directo...

My web application returns a file from the filesystem. These files are dynamic, so I have no way to know the names o how many of them will there be. When this file doesn't exist, the application cr...

Class clazz has two methods methodA() and methodB(). How to ensure that methodB is "blocked" if some threads are in methodA in Java (I am using Java 8)? By "blocking methodB", I mean that "wai...

I am trying to create an account for my app, where I will be able to have my contacts against my account like facebook, viber, whatsapp etc. I want my account to be visible in the account section o...

I use egit in Eclipse to sync my code between two locations using a repository on bitbucket. I want to be able to work on the code from either location. What I usually do is commit the changes at ...