Chapter 13. Special Topics
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Chapter 13. Special Topics

Table of Contents
13.1. Modifying QNX Process Environment Variables
13.2. QNX 4 Interprocess Communication (IPC)
13.3. Cogent IPC
13.3.1. Cogent IPC Service Modules
13.3.2. Cogent IPC Advanced services
13.3.2.1. Cogent IPC Messages
13.3.2.2. Asynchronous Messages
13.3.2.3. Pseudo-Asynchronous Messages
13.3.2.4. Task Started & Death Notification
13.3.2.5. Automatic Handling of QNX 4 receive and reply
13.3.2.6. IPC Initialization
13.3.2.7. Locating Tasks
13.3.2.8. Transmitting Character Strings
13.3.3. Cogent DataHub
13.3.4. Cogent DataHub Exceptions and Echos

13.1. Modifying QNX Process Environment Variables

The QNX 4 environment variables can be read and modified by a Gamma program using the getenv and setenv function calls.

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12.4.3. Reading Binary Data Home 13.2. QNX 4 Interprocess Communication (IPC)