How do I handle threading issues like deadlocks

Handling threading issues such as deadlocks in C# involves careful design and understanding of synchronization mechanisms. To prevent deadlocks, you can use various strategies like proper ordering of locks, avoiding nested locks, using timeout mechanisms, and leveraging higher-level abstractions such as the Task Parallel Library (TPL).

Below is a simple example demonstrating how to avoid a deadlock scenario using a timed lock approach:

using System; using System.Threading; class Program { static object lock1 = new object(); static object lock2 = new object(); static void Main() { Thread thread1 = new Thread(() => { LockResources(lock1, lock2); }); Thread thread2 = new Thread(() => { LockResources(lock2, lock1); }); thread1.Start(); thread2.Start(); thread1.Join(); thread2.Join(); } static void LockResources(object lockA, object lockB) { bool gotLockA = false; bool gotLockB = false; try { Monitor.TryEnter(lockA, TimeSpan.FromSeconds(1), ref gotLockA); Monitor.TryEnter(lockB, TimeSpan.FromSeconds(1), ref gotLockB); if (gotLockA && gotLockB) { // Critical section Console.WriteLine("Locks acquired!"); } } finally { if (gotLockA) Monitor.Exit(lockA); if (gotLockB) Monitor.Exit(lockB); } } }

C# threading deadlocks synchronization locks TPL Monitor class

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