 |
Cheat Engine
The Official Site of Cheat Engine
|
| View previous topic :: View next topic |
| Author |
Message |
HenryEx
Expert Cheater
![]() Reputation: 2
Joined: 18 Dec 2011
Posts: 100
|
 Posted: Tue Mar 04, 2025 9:25 am Post subject: Problems using createThread() |
 |
|
Trying to fetch some game data asynchronously in the background without blocking the interface, and i'm having trouble with this. Most of the time, the UI still locks up while the thread runs.
I've narrowed down my problem to two scenarios.
Why does this freeze GUI until thread completes:
| Code: | local function doSetupThread ( self, func, target, typ )
sleep(2000)
print('Done')
end
local function setupAsync()
createThread(doSetupThread())
end
setupAsync() |
And this doesn not freeze the GUI and runs in the background:
| Code: | local function doSetupThread ( self, func, target, typ )
sleep(2000)
print('Done')
end
local function setupAsync()
createThread(doSetupThread)
end
setupAsync() |
These should be effectively identical.
I don't want to write a separate function for all X threads i want to run, just one generalized function with certain arguments. But whenever i try to pass arguments via createThread (even if there are none), the thread creator seems to wait for the thread.
|
|
| Back to top |
|
 |
Dark Byte
Site Admin
 Reputation: 468
Joined: 09 May 2003
Posts: 25718
Location: The netherlands
|
| Posted: Tue Mar 04, 2025 9:56 am Post subject: |
|
|
In the first script you pass the result of doSetupThread to createThread, which isn't a valid function (it returns nil) so doesn't do anything
in the 2nd version you pass the function doSetupThread to create thread, which will result in the function being executed in another thread
if you want to pass parameters do so by adding more parameters to createThread or use local vars (upvalues)
| Code: |
local upvalueexample=4
local function doSetupThread ( self, func, target, typ )
printf("%s %s %s", tostring(func), tostring(target), tostring(typ))
sleep(2000)
print('Done')
printf("upvalueexample=%d",upvalueexample)
end
local function setupAsync()
createThread(doSetupThread, 1,2,'3')
end
setupAsync()
|
_________________
Do not ask me about online cheats. I don't know any and wont help finding them.
Like my help? Join me on Patreon so i can keep helping |
|
| Back to top |
|
|
ParkourPenguin
I post too much
 Reputation: 150
Joined: 06 Jul 2014
Posts: 4657
|
| Posted: Tue Mar 04, 2025 10:52 am Post subject: |
|
|
More detail:
| Code: | function foo()
return 5
end
print(('foo() = %d'):format(foo()))
print(('foo = %s'):format(foo))
assert(foo() ~= foo)
createthread(foo()) -- same as `createthread(5)`; bad
createthread(foo) -- this is the one you want |
_________________
I don't know where I'm going, but I'll figure it out when I get there. |
|
| Back to top |
|
|
HenryEx
Expert Cheater
![]() Reputation: 2
Joined: 18 Dec 2011
Posts: 100
|
| Posted: Tue Mar 04, 2025 3:14 pm Post subject: |
|
|
I see how that works, now. I was a bit confused by the wiki entry on it, that clearly shows some ... arguments like this:
| Quote: | | createThread(function(Thread,...), ...) |
I figured since it shows the thread passing itself down to the function in brackets, plus additional ... after that, that you need brackets if you want to send arguments down the line. The additional arguments shown after the brackets didn't help my confusion, but it sorta makes sense now.
This is coming just in time, since i'll be wanting to use pcall() for my threads to make sure they clean up properly despite errors, and that works the same way!
Thanks for the help.
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
