Is it permissible to perform asynchronous tasks inside a lock in multithreaded programming?

Performing asynchronous tasks inside a lock (lock) in multithreaded programming is generally not recommended. Reasons:

• Asynchronous operations may wait for completion, leading to long lock holding and blocking other threads.
• Deadlocks can occur if async code tries to acquire the same or other locks.

Better approaches:

• Minimize lock holding time by executing only critical sections inside lock.
• Run asynchronous tasks outside of locks.

Example of bad practice:

lock(obj) {
    await SomeAsyncOperation(); // can cause issues
}

Better approach:

lock(obj) {
    // Critical section
}
await SomeAsyncOperation(); // outside lock