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Process Table

The process table is a data structure maintained by the operating system to facilitate context switching and scheduling, and other activities discussed later. Each entry in the table, often called a context block, contains information about a process such as process name and state (discussed below), priority (discussed below), registers, and a semaphore it may be waiting on (discussed later). The exact contents of a context block depends on the operating system. For instance, if the OS supports paging, then the context block contains an entry to the page table.

In Xinu, the index of a process table entry associated with a process serves to identify the process, and is known as the process id of the process.

Prasun Dewan
Tue Jan 20 11:58:31 EST 2004