I am talking about the app that I am developing. Some operations can take a vvvveeeeerrrrrryyy long time (up to a few minutes) and the damn watchdog just reboots the damn phone. I know about the R&D mode (BTW, it seems all the links to the R&D mode wiki page are dead) but I cannot ask the users of my app to enable the R&D mode just to be able to use it, can I?

I assume there is a system call somewhere that I can call periodically to reset the watchdog. What is it?

Sorry if this is a silly question with an obvious answer. I must be particularly slow this morning. I just spent two hours searching and found nothing of relevance.