Spinlock: Busy-Wait Synchronization
A spinlock is exactly what it sounds like: a lock that spins. When a thread tries to acquire a spinlock that’s already held, it doesn’t go to sleep and wait for the operating system to wake it up….
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Python asyncio Synchronization Primitives
Many developers assume that single-threaded asyncio code doesn’t need synchronization. This is wrong. While asyncio runs on a single thread, coroutines can interleave execution at any await point,…
Condition Variables: Thread Synchronization
Condition variables solve a fundamental problem in concurrent programming: how do you make a thread wait for something to happen without burning CPU cycles? The naive approach—spinning in a loop…
Read more →Atomic Operations: Hardware-Level Synchronization
Consider a simple counter increment: counter++. This single line compiles to at least three CPU operations—load, add, store. Between any of these steps, another thread can intervene, leading to…