Natives calls are on the same thread?

Unity Engine
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1

hi
if i make a call to a native function C++ or java it will lock the game until this function end?
or the call is in other thread?

i need to get some info from a server, and it can take some time, what is the proper way to do this?
thanks
David

2

Could you use the WWW class?

3

Or start a thread in native using pthreads. I’ve done that before.

4

It’s called on the ‘same’ thread. (ie, whatever thread that initiated the call into native/java).

5

hi
and each update and/or script call is in its own thread or it will lock the game until it cames back?
thanks

6

Not sure what what you mean by ‘update’; but if you call a native function (or java, which is considered native when coming from scripts) on a particular thread, then it will immediately execute the native call, on that thread. Any other thread will continue to run normally (unless there are other thread locking primitives (mutex/semaphore/‘synchronized’ etc) in play), but obviously the thread making the native call will be ‘blocked’ (as it is performing the call itself).
There is nothing ‘magic’ or different about a native call compared to a managed call to a C#/JS class method in this regard.

7

i read each script run the “update” function every frame or something like that

8

the ::Update function is always called on the main thread. If you do native calls (or any calls) on the main thread, the main thread will stall.

9

what is the best way to make an async call ?
i need to make a call to a webservice and show the result but off cource the rest of the game must be responsive.

10

Did you try the WWW api, as suggested by DTreble?