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Lifespan QoS implementation

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This commit enables specifying a duration for data to be valid when writing
samples. After this duration, samples are dropped from the reader and writer
history cache. See section 2.2.3.16 of the DDS specification for more
details on this QoS.

The expiration of samples in the reader history cache is calculated
based on the reception timestamp of the sample and uses the monotonic
clock. As a result, the current implementation does not rely on clock
synchronisation between reader and writer. There may be reasons to
change this behavior in future and use the source timestamp instead.

Signed-off-by: Dennis Potman <dennis.potman@adlinktech.com>
This commit is contained in:
Dennis Potman 2019-12-17 10:58:00 +01:00 • committed by eboasson
parent 1ec9c3a194
commit ef0f4c2ae7
21 changed files with 660 additions and 81 deletions
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4
src/mpt/tests/qos/procs/rw.c
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@ -93,7 +93,11 @@ static void setqos (dds_qos_t *q, size_t i, bool isrd, bool create)
dds_qset_history (q, (dds_history_kind_t) ((i + 1) % 2), (int32_t) (i + 1));
dds_qset_resource_limits (q, (int32_t) i + 3, (int32_t) i + 2, (int32_t) i + 1);
dds_qset_presentation (q, (dds_presentation_access_scope_kind_t) ((psi + 1) % 3), 1, 1);
#ifdef DDSI_INCLUDE_LIFESPAN
dds_qset_lifespan (q, INT64_C (23456789012345678) + (int32_t) i);
#else
dds_qset_lifespan (q, DDS_INFINITY);
#endif
dds_qset_deadline (q, INT64_C (67890123456789012) + (int32_t) i);
dds_qset_latency_budget (q, INT64_C (45678901234567890) + (int32_t) i);
dds_qset_ownership (q, (dds_ownership_kind_t) ((i + 1) % 2));