12 Signals, interrupts, and exceptions
This chapter covers
- What interrupts, exceptions, traps, and faults are
- How device drivers inform applications that data is ready
- How to transmit signals between running applications
This chapter describes the process by which the outside world communicates with your operating system (OS). The network constantly interrupts program execution when bytes are ready to be delivered. This means that after connecting to a database (or at any other time), the OS can demand that your application deal with a message. This chapter describes this process and how to prepare your programs for it.
In chapter 9, you learned that a digital clock periodically notifies the OS that time has progressed. This chapter explains ...
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