Async non blocking API calls

1

Hello,
I’m in this case:

Component A (use B api function)
Component B (exposes api functions)

Component B handle “Data Connection”, it open GPRS context and activate data. I use built in ` le_data_ConnectService() and then le_data_Request() for this. Naturally if connection is down, Component B can take time to ativate.

Componet A, instead, watch for some events (motion) and if needed it call Componet B for connection.

My question is, how to avoid blocking A while calling B apis during works?

Sorry for my questin but i cant find a clear documenation on this. I’ve tried calling B methods from A using thread but got a problem here… cause the le_data_ConnectService(); needs to be called from the main thread. So i Receive an error.

Thank you so much,
Gian

2

Then can you using other higher priority thread to handle motion event in component A?

3

Thanks for your answer…

Can you be more clear?

4

You say that “le_data_ConnectService(); needs to be called from the main thread”

Then you can create other thread to handle motion event, right?

5

Yes, from component A i can create a Thread to alert Component B that “data connection” is needed, and i can set this to high priority. But anyway … when calling B api… (Connect)… in this function i call le_data_ConnectService(), and it goves me an error: le_data_ConnectService must be called from main thread…

6

The only way i found is using a Timer in B to check is something changes… and start actions based on some variable changed. I’m using this approach in another component… but this fill the code of timers…

7

Then why don’t you call le_data_ConnectService() in the main thread?

8

if calling in main thread means calling a direct function from extern, via a method… then this will block until connection established. And I dont want this, cause this will block other part of code that must flow normally without wait…

:frowning:

9

Other part of code should be run in another higher priority thread, not same main thread

10

will try to make some changes following your direction…
thank so much … you really kind.

Gian