CHAPTER 21Processes, Signals, and Threads
In this chapter, we look at managing multiple strands of execution within a single application, both with multiple separate processes and with lighter-weight threads. We also cover the related subject of communicating between processes, both within the same application and between applications. In particular, we examine signals and interprocess communication, also known as IPC.
Signals are the operating system's basic mechanism for indicating error conditions and other events asynchronously. We can receive them, for example, as a result of errors in low-level system calls or abnormal termination of socket filehandles. Unless we handle it or state that we wish to ignore it, such a signal will terminate ...
Get Pro Perl 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.
