There is an important-to-understand issue during signal handling, when working with reentrant-unsafe (also called async-signal-unsafe) functions within a signal handler.
Of course, to understand this issue, you must first understand what exactly a reentrant function is, and, subsequently, what is meant by reentrant-safe or async-signal-safe functions.
Get Hands-On System Programming with Linux now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
Get Mark Richards’s Software Architecture Patterns ebook to better understand how to design components—and how they should interact.
Dive in for free with a 10-day trial of the O’Reilly learning platform—then explore all the other resources our members count on to build skills and solve problems every day.
Start your free trial Become a member now