Synclock in VB.Net = What in B4A?

[dreamworld]

In VB.net, I can use Synclock to prevent multi threads from executing the same codes simultaneously.
I am wondering whether there is a similiar mechanism in B4A?
I tried to find a answer by searching on this website, but I got nothing.

 

[agraham]

The Threading library dates from early in Basic4android history when there was no other asynchronous mechanism available. Nowadays good practice is for libraries to provide the asynchronism when necessary so I'm not sure when you would need a lock. However there is a Lock object in the library.

 

[dreamworld]

dim A as new object

Synclock A

code line
code line
code line
...

End Synclock

 

[agraham]

I don't know what message you intend to convey by the post above but it comes over as terse and rude. Read the help for Lock.

A Semaphore initialised unlocked can be used to control
access to a resource. To acquire a resource the sequence for a thread is
Wait() - use resource - UnLock().

 

[dreamworld]

Excuse me. I did read the introduction of Lock, and then I tried to find some sample codes to help me understand how it works. Unfortunately, the sample I got after hard searching gave me an impression that Lock is for pausing a thread.

 

[Erel]

Why do you need a Lock? Are you using the Threading library to create additional threads?

 

[dreamworld]

Each socket needs a thread. And they access the same data.

 

[Erel]

Are you using the Threading library to create additional threads?

???
If not then your code is running in the main thread. The libraries are responsible for running long tasks in the background (for example AsyncStreams).