After some testing, I'm fairly confident the issue I was seeing before isn't
happening now. After re-processing ~250 plugins a few times with the same
workers I was seeing significant slow-downs with large plugins. Also, if I was
listening to music in the browser it would start crackling and popping.
My hypothesis is that wee_alloc was causing a memory leak in the old version
which was causing browsers to freak out unless I recreated the workers on every
run. Though I'm not sure if that theory holds since I wasn't seeing out of
control memory usage in the dev tools. Perhaps wee_alloc just wasn't good at
managing memory after a certain number of allocate/deallocate cycles and was
putting a huge strain on the browser.
I'm hoping that reusing workers like this will also speed up processing and
possibly resolve some crashing that some users were seeing.
WorkerPool speeds up processing of plugins by using more cores on separate threads. It terminates and recreates a worker after it finishes a task since web assembly seems to slow down a ton when a worker is reused (maybe memory becomes to large / unfragmented, idk).
I switched to the deprecated input tag with webkitdirectory since it is the only way to load a folder under the program files folder. Drag and drop might be another alternative, but I'd rather have a picker.