Tag
async-signal-safety
- Oct 24, 2026 Signals as Deferred Interrupts and the Async-Signal-Safe Subset How a signal handler interrupts an arbitrary instruction, why most library calls are unsafe inside one, and what the small permitted subset actually guarantees. computing history
- Sep 24, 2026 Signals: Delivery, Interruption, and the Async-Signal-Safe Set A signal handler runs on the thread it interrupted, with that thread half-finished, which is why only a small set of functions may be called from one. Delivery, masking, and the self-pipe pattern follow from the handler running on an interrupted thread. systems programming