This fixes a bug where Bot.next_row_generator_lock was not held when loading the Bot.next_row_generator for a new touch. This meant that, if the next_row_generator were to take more than a few milliseconds to load, the main thread wouldn't wait for the loading to finish and would blindly read the old value of Bot.next_row_generator.
Downloading a peal-length composition from CompLib takes ~300ms, which is enough to consistently trigger this race condition. Therefore, this fix is required for compositions to work in Ringing Room.
This fixes a bug where
Bot.next_row_generator_lockwas not held when loading theBot.next_row_generatorfor a new touch. This meant that, if thenext_row_generatorwere to take more than a few milliseconds to load, the main thread wouldn't wait for the loading to finish and would blindly read the old value ofBot.next_row_generator.Downloading a peal-length composition from CompLib takes ~300ms, which is enough to consistently trigger this race condition. Therefore, this fix is required for compositions to work in Ringing Room.