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Per-Process Private Data (Pppd)

Description

The Pppd sample is an RTDLL sample that creates Per-Process Private Data within the RTDLL.

Source Files

The Pppd example includes three projects:

• RtdllExample.vcproj/RtdllExample.c contains the functions SetCount, GetCount, and IncrementCount that use per-process private data(PPPD), allocated for each RTSS process.
• LoadRtdll.vcproj/LoadRtdll.c is a simple utility to load a RTDLL.
• TestRtdl.vcproj/TestRtdl.c is a test that uses a counter that belongs to the per-process private data in rtdll.

Remarks

The rtdllexample.rtdll must be loaded first. This is done in two steps:

1. rtssrun /d /s RtdllExample.rtss
2. rtssrun LoadRtdll.rtss

The first steps registers the rtdll. The second step loads it. A user starts the test with

rtssrun TestRtdll.rtss

It is started again after few seconds. This causes two rtss processes to run simultaneously. The test runs for 30 seconds, and prints incrementing counter for each process.

NOTE:  This sample can be run by using the batch file testrtdll.bat.

APIs Referenced

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