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Diffstat (limited to 'testsuites/sptests/spsem02/spsem02.doc')
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diff --git a/testsuites/sptests/spsem02/spsem02.doc b/testsuites/sptests/spsem02/spsem02.doc new file mode 100644 index 0000000000..95ff65a1f4 --- /dev/null +++ b/testsuites/sptests/spsem02/spsem02.doc @@ -0,0 +1,23 @@ +This test demonstrates priority inheritance with multiple locks and threads. + +The scenario consists of 3 tasks of different priority and 2 semaphore/mutexes +using priority inheritance. The scenario is: + +Task 1 has priority 36. Task 2 has priority 34. Task 3 has priority 32. + +1. Task 1 obtains semaphore S1. +2. Task 1 obtains semaphore S2. +3. Task 2 preempts Task 1. +4. Task 2 blocks on S2. Task 1 inherits priority 34. +5. Task 1 resumes. +6. Task 3 preempts Task 1. +7. Task 3 blocks on S1. Task 1 inherits priority 32. +8. Task 1 resumes. Task 1 releases S2. Task 1 continues with priority 32. +9. Task 1 releases S0. +10. Task 3 resumes. +11. Task 3 releases S0 and exits. +12. Task 2 resumes. +13. Task 2 releases S1 and exits. +14. Task 1 resumes. +15. Task 1 exits. + |