Draft: Work on #66, trying to remove race conditions while classifying channels (!564) · Merge requests · CDS / software / advLigoRTS

Open Jonathan Hanks requested to merge jonathan-hanks/advligorts:issue66_deadlock_in_ca_sdf_code into master 1 year ago

Oct 12, 2023

Updating the ca sdf code to remove a deadlock condition. · 51b084d2

Jonathan Hanks authored 1 year ago

 * Reworked how CA data is subscribed and consumed.
 * Removed the caTable, caConnTable, caConnEnumTable, caEvid arrays.
 * Added a single table caInputTable that is the only thing that the connection/subscription callbacks interact with.
 * Removed unused logic and mutexes around the caThreadState variable.

 Now the callbacks operate only on the caInputTable.  This table is synced to the cdTable (main data table) once a cycle via the syncCAConnections call.  Mutexes are not held while creating CA channels or subscriptions.  Fine grained locking is being used (per PV).

51b084d2

Oct 10, 2023
- Adding cmake to build test sequencers using seq_main.c · 756e53c6
  Jonathan Hanks authored 1 year ago
  
  756e53c6
- WIP on #66 , trying to remove race conditions while classifying channels · 839f7190
  Jonathan Hanks authored 1 year ago
  
  * Partial solution, the issue is ca_clear_subscription can rightfully call callbacks and lead to a deadlock * There are other areas that call ca_clear_subscription * not tested.
  839f7190

Draft: Work on #66, trying to remove race conditions while classifying channels

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