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The following figure shows subcategories for invokable TPs.
| Queued or nonqueued |
Application or service |
Starting method |
|---|---|---|
| Queued | Running as an application or a service | Autostarted or operator-started |
| Nonqueued | Running as an application | Autostarted |
The concept of a TP "running as a service" or "running as an application" is distinct from a service TP or an application TP. Service TP and application TP are SNA terms that describe how a TP is used: either as a supportive service program for other APPC programs, or directly by a user, as an application. For detailed information about services and applications on Windows, see the Microsoft Developer Network (MSDN®) Platform Software Development Kit.
To write an autostarted TP so it will run under Windows as a service and also run in a nonqueued way, write a multithreaded program with a RECEIVE_ALLOCATE always outstanding. See Invokable TPs.