Chapter 6. Message Queues
Introduction
The designers of UNIX found the types of interprocess communications that could be implemented using signals and pipes to be restrictive. To increase the flexibility and range of interprocess communication, supplementary communication facilities were added. These facilities, added with the release of System V in the 1970s, are grouped under the heading IPC (Interprocess Communication). In brief, these facilities are
Message queues—. Information to be communicated is placed in a predefined message structure. The process generating the message specifies its type and places the message in a system-maintained message ...
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