Raymond Chen has been doing a huge series on lockfree algorithms. Beyond the simple cases of the InterlockedXxx functions, it seems like the prevailing pattern with all of these is that they implem...

I have been having trouble finding an example of what use cases are suitable for Vector Clocks and Version Vectors, and how they might differ. I understand that they largely work in the same way, w...

What is it and how to use? I need that as I have a timer that inserts into DB every second, and I have a shared resource between timer handler and the main thread. I want to gurantee that if the ti...

When using Git on multiple workstations, and for different Git repositories, it is convenient to have the same set of aliases available. So, to synchronize the Git aliases across different workstat...

I'm using java.util.Timer to schedule a periodic task. At one point, I'd like to shut it down, and wait for it to finish. Timer.cancel() will prevent any future tasks from running. How do I make s...

I tried the code below. I took this piece of code from some other post which is correct as per the author. But when I try running, it doesn't give me the exact result. This is mainly to print eve...

When a synchronized method is completed, will it push only the data modified by it to main memory, or all the member variables, similarly when a synchronized method executes, will it read only the ...

I had a 2x2 array that I had two threads operating on. it is possible to use a synchronized statement in java on an array? how does the locking work? the java tutorial thread said that the synchr...

I am attempting to write a small demo program that has two cuda streams progressing and, governed by events, waiting for each other. So far this program looks like this: // event.cu #include <i...

Is it true that C++0x will come without semaphores? There are already some questions on Stack Overflow regarding the use of semaphores. I use them (posix semaphores) all the time to let a thread wa...

I need to synchronize the scroll event of two DataGridView controls, so that when I horizontally scroll the first DGV, second DGV also should be scrolled in the same way. Is it possible? Could thi...

I have an async API which wraps some IO library. The library uses C style callbacks, the API is C++, so natural choice (IMHO) was to use std::future/std::promise to build this API. Something like s...

What is the difference between lock and Mutex? Why can't they be used interchangeably?

I want to mirror a git repo to my local repo, and wish to timely sync them, I did like this: git clone --mirror source_url source_repo cd source_repo git push --mirror local_url Now I have mirr...

Here is a simple example of acquire-release semantics used for data synchronization across threads. // thread 1 // thread 2 data = 100; flag.store(true, std::memory_order_release); while(!flag.loa...

I forked a project on github, made some changes, so far so good. In the meantime, the repository I forked from changed and I would like to get those changes into my repository. How do I do that ? ...

When to use a semaphore and when to use a conditional variable?

Is it safe to use __syncthreads() in a block where I have purposefully dropped threads using return? The documentation states that __syncthreads() must be called by every thread in the block or el...

We have multiple threads calling add(obj) on an ArrayList. My theory is that when add is called concurrently by two threads, that only one of the two objects being added is really added to the Ar...

Pushlocks are used internally by windows as synchronization primitives for some of its operations, specifically as part of the memory manager. What exactly is a pushlock? How is it different from ...

I would like to have a synchronized copy of one folder with all its subtree. It should work automatically in this way: whenever I create, modify, or delete stuff from the original folder those cha...

When should we use mutex and when should we use semaphore ?

I have two github accounts and currently vs code settings is synced with one account but I want copy the settings to the second github account and sync from there. How to do it? Thanks!

I cannot find anything resembling file locking like some programs use in Linux to prevent multiple instances from running. In Python, I'd use pylockfile. Am I overlooking similar functionality in R...

At my work I currently have my development environment inside a Virtual Machine. When I need to do work from home I copy my VM and any databases I need onto a laptop drive sized external USB drive....