How to safely redispatch an RsslMsgEvent to another thread

I'd like to offload the processing of a defaultMsgEventCallback to another thread to distribute the data received from the subscriptions among multiple threads rather than the thread on which rsslReactorDispatch is called to prevent being disconnect for buffer overruns in the Elektron Server
In order to due so, I'm assuming I'll need to make a copy of the RsslMsgEvent that is passed into the callback routine (unless it remains valid after the callback function returns)
The question is what is the safest way to copy the data in that structure.
Looking at it, I see it contains 5 pointers.
The last two pointers, to a 32 bit and 8 bit value should be fairly straight forward.
If I make a deep copy of each of the areas to which the other pointers in the structure point, will that be sufficient?
Assuming all the data is copied, will the data still be valid for processing? (decoding)
Is there a routine like: rsslCopyMsgEvent() ?
Or should I just create multiple reactors in separate threads and let the dispatch take take of it natively?
Best Answer
-
Events received in callback functions should be assumed to be invalid once the callback function returns. As far as I know, there is no function to make a deep copy of the RsslMsgEvent. Instead, you can made a deep copy of RsslMsg or Rssl provided in the event. To copy an RsslMsg, please see the rsslCopyMsg function in the Transport API C Developers Guide document.
0
Answers
-
It depends on requirement of the application regarding performance. In normal situation, using only one reactor and copying the messages to be processed by other threads are enough.
However, in some extreme scenarios, multiple reactors are required. This allows users to quickly and easily horizontally scale the application to leverage multi-core systems or
distribute content across multiple connections.0
Categories
- All Categories
- 3 Polls
- 6 AHS
- 36 Alpha
- 166 App Studio
- 6 Block Chain
- 4 Bot Platform
- 18 Connected Risk APIs
- 47 Data Fusion
- 34 Data Model Discovery
- 684 Datastream
- 1.4K DSS
- 615 Eikon COM
- 5.2K Eikon Data APIs
- 10 Electronic Trading
- Generic FIX
- 7 Local Bank Node API
- 3 Trading API
- 2.9K Elektron
- 1.4K EMA
- 249 ETA
- 554 WebSocket API
- 37 FX Venues
- 14 FX Market Data
- 1 FX Post Trade
- 1 FX Trading - Matching
- 12 FX Trading – RFQ Maker
- 5 Intelligent Tagging
- 2 Legal One
- 23 Messenger Bot
- 3 Messenger Side by Side
- 9 ONESOURCE
- 7 Indirect Tax
- 60 Open Calais
- 275 Open PermID
- 44 Entity Search
- 2 Org ID
- 1 PAM
- PAM - Logging
- 6 Product Insight
- Project Tracking
- ProView
- ProView Internal
- 22 RDMS
- 1.9K Refinitiv Data Platform
- 643 Refinitiv Data Platform Libraries
- 4 LSEG Due Diligence
- LSEG Due Diligence Portal API
- 4 Refinitiv Due Dilligence Centre
- Rose's Space
- 1.2K Screening
- 18 Qual-ID API
- 13 Screening Deployed
- 23 Screening Online
- 12 World-Check Customer Risk Screener
- 1K World-Check One
- 46 World-Check One Zero Footprint
- 45 Side by Side Integration API
- 2 Test Space
- 3 Thomson One Smart
- 10 TR Knowledge Graph
- 151 Transactions
- 143 REDI API
- 1.8K TREP APIs
- 4 CAT
- 26 DACS Station
- 121 Open DACS
- 1.1K RFA
- 104 UPA
- 192 TREP Infrastructure
- 228 TRKD
- 915 TRTH
- 5 Velocity Analytics
- 9 Wealth Management Web Services
- 90 Workspace SDK
- 11 Element Framework
- 5 Grid
- 18 World-Check Data File
- 1 Yield Book Analytics
- 46 中文论坛