Deadlock, Liveness & Reentrant Locks
Explore the fundamental concurrency issues like deadlock, live-lock, starvation, and liveness problems in multithreaded Python programs. Understand how improper lock usage can cause these issues and how reentrant locks (RLock) help prevent deadlocks by allowing a thread to reacquire a lock it already holds. This lesson prepares you to recognize and solve common multithreading problems encountered in senior engineering interviews.
We'll cover the following...
Deadlock and Liveness
Logical follies committed in multithreaded code, while trying to avoid race conditions and guarding critical sections, can lead to a host of subtle and hard to find bugs and side-effects. Some of these incorrect usage patterns have their specific names and are discussed below.
Deadlock
Deadlocks occur when two or more threads aren't able to make any progress because the resource required by the first thread is held by the second and the resource required by the second thread is held by the first.
Liveness
Ability of a program or an application to execute in a timely manner is called liveness. If a program experiences a deadlock then it's not exhibiting ...