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HP-UX 11i Internals by Chris Moore, Chris Cooper

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Signal Data Structures

Before we get into the process of handling signals, let's look at the associated data structures. Figure 14-1 shows the various signal-related structures and how they relate to the proc and kthread structures.

Figure 14-1. Signal-Related Data Structures

With the advent of multithreaded processes in HP-UX version 11.0, the concept of signals became much more complicated, and several new data structures were created. At the same time, much of the data that used to be kept in the proc structure was moved into a new structure called a struct Process_Shared_Fields. The proc structure has a field, p_shared, that points to the ...

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