Mutex example / tutorial? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations. Closed 2 years ago. Improve this question I’m new to multithreading, and was … Read more

Synchronization vs Lock

java.util.concurrent API provides a class called as Lock, which would basically serialize the control in order to access the critical resource. It gives method such as park() and unpark(). We can do similar things if we can use synchronized keyword and using wait() and notify() notifyAll() methods. I am wondering which one of these is … Read more

How does @synchronized lock/unlock in Objective-C?

Does @synchronized not use “lock” and “unlock” to achieve mutual exclusion? How does it do lock/unlock then? The output of the following program is only “Hello World”. @interface MyLock: NSLock<NSLocking> @end @implementation MyLock – (id)init { return [super init]; } – (void)lock { NSLog(@”before lock”); [super lock]; NSLog(@”after lock”); } – (void)unlock { NSLog(@”before unlock”); … Read more

What is the difference between atomic / volatile / synchronized?

How do atomic / volatile / synchronized work internally? What is the difference between the following code blocks? Code 1 private int counter; public int getNextUniqueIndex() { return counter++; } Code 2 private AtomicInteger counter; public int getNextUniqueIndex() { return counter.getAndIncrement(); } Code 3 private volatile int counter; public int getNextUniqueIndex() { return counter++; } … Read more

C# version of java’s synchronized keyword?

Does c# have its own version of the java “synchronized” keyword? I.e. in java it can be specified either to a function, an object or a block of code, like so: public synchronized void doImportantStuff() { // dangerous code goes here. } or public void doImportantStuff() { // trivial stuff synchronized(someLock) { // dangerous code … Read more