patchlwIP - A Lightweight TCP/IP stack - Patches: patch #9889, Support for memory pools in MQTT...


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patch #9889: Support for memory pools in MQTT app

Submitter:  Anton Gerasimov <oytis>
Submitted:  Mon 10 Feb 2020 12:57:21 PM UTC
Category:  None Priority:  5 - Normal
Status:  None Privacy:  Public
Assigned to:  None Open/Closed:  Open
Planned Release:  None

Tue 11 Feb 2020 02:19:26 PM UTC, comment #2: 

Well, the API is kind of there, one can include 'lwip/apps/mqtt_priv.h', and do what documentation suggested, allocate the client handler statically that is. But the name 'mqtt_priv.h' implies that it's private, and shouldn't be included directly. Maybe it could then be merged with mqtt.h or renamed to something like 'mqtt_static.h'?

Or as the most lightweight solution 'doc/mqtt_client.txt' could mention that mqtt_priv.h should be included for the static allocation.

Or did you have a different kind of API in mind?

Anton Gerasimov <oytis>
Tue 11 Feb 2020 08:25:13 AM UTC, comment #1: 

Hmm, maybe it would be easier to expose an API where the caller can provide the memory instead of adding the memp allocation scheme into mqtt.c?

Simon Goldschmidt <goldsimon>
Project Administrator
Mon 10 Feb 2020 12:57:21 PM UTC, original submission:  

The definition of mqtt_client_t is not a part of public API any more, so it can't be instantiated statically without including private headers. An alternative is a configuration option to make MQTT use pool allocator. It changes the API slightly as the pool should be initialized first.

Anton Gerasimov <oytis>


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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2020-02-10 oytis Attached File- Added 0001-mqtt-add-support-for-memory-pools.patch, #48390
        Attached File- Added 0002-doc-update-MQTT-documentation-with-memory-pools.patch, #48391
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