Fixed issue24

[LegendEvent]

Fix the problem by adding a queue instead of an error message and restarting continuously

Thread Pooling for Plugin Event Callbacks in Pwnagotchi

Description

Implemented a thread pooling mechanism for executing plugin event callbacks in the Pwnagotchi plugin management system (init.py). Instead of creating a new thread for each callback, a fixed number of worker threads are now utilized to execute queued tasks. This mitigates the "can't start new thread" error by limiting the number of concurrently running threads.

Motivation and Context

The changes address the issue where the Pwnagotchi system throws a "can't start new thread" error due to excessive thread creation when handling multiple plugin event callbacks. Especially on devices with limited resources like the Raspberry Pi Zero, this can lead to system resource exhaustion. By using a thread pool, we ensure efficient use of threads, preventing resource overuse and the aforementioned error.

Link to the issue: #24

• I have raised an issue to propose this change (required)

How Has This Been Tested?

The modifications have been reviewed for syntactical accuracy, and the logic aligns with standard thread pooling implementations.
Replaced the init.py file and deleted the cache file. Reboot the pwnagotchi and I did not received any error.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have signed-off my commits with git commit -s

[aluminum-ice]

@LegendEvent Have you seen a crash that happens when there are a lot of APs in the area? It seems like a similar thread exhaustion problem to the one you solved here with this PR. I don't have a way to email you directly to discuss on github. Is there a way to connect?

[LegendEvent]

@aluminum-ice No, I have not yet experienced crashes in an environment with many APs. I have tested the Pwnagotchi in a test environment with about 30 APs, which was also designed for heavy traffic. There I could not find any errors or crashes. You can write me via Discord "LegendEvent".

[aluminum-ice]

@aluminum-ice No, I have not yet experienced crashes in an environment with many APs. I have tested the Pwnagotchi in a test environment with about 30 APs, which was also designed for heavy traffic. There I could not find any errors or crashes. You can write me via Discord "LegendEvent".

@LegendEvent It seems you have to enable adding friends on Discord before I can message you directly. Or you can add me aluminum_ice on Discord.