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| Rev | Author | Line No. | Line |
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| 1624 | giacomo | 1 | EDFACT Scheduling Module |
| 2 | ------------------------ |
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| 3 | by Paolo Gai 2001 |
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| 4 | |||
| 5 | |||
| 6 | Pisa, 6, Jun 2001 |
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| 7 | |||
| 8 | This Module implements a EDF scheduler. |
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| 9 | |||
| 10 | It is very similar to the EDF Module distributed with the kernel sources, |
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| 11 | except that: |
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| 12 | - It does not support hard sporadic tasks |
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| 13 | - It does not raise a deadline exception |
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| 14 | - It does not raise a wcet violation exception |
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| 15 | - Instead of raising an exception, the module simply COUNTS deadline misses |
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| 16 | and wcet exaustions.. |
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| 17 | |||
| 18 | Since a large part of the applications use only periodic tasks, this Module |
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| 19 | can be a great improvement because the application will not hang up at |
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| 20 | the first exception!!! (and this happens frequently when switching to a |
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| 21 | slower PC :-( ) |
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| 22 | |||
| 23 | I also wrote a simple test to show how the module works... |
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| 24 | |||
| 25 | To use the Module in your applications, simply copy the edfact.c and edfact.h |
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| 26 | into your application directory, and register edfact instead of the |
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| 27 | tradictional edf... |
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| 28 | |||
| 29 | For bugs, questions and comments please write to pj@sssup.it |
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| 30 | |||
| 31 | Paolo |