Does my thread need volatile variables?
Posted on 2004-08-13
I have a program that collects packets and stores info in a binary search tree. Every 5 minutes, I want to dump the tree to file and then repopulate with new packets. So, after I dump, I clear out the BST. My application uses libpthread. My BST is in global space, so that both threads can see it (one thread to collect, and one to dump to file). When I don't clean up the tree, and just let it keep accumulating, the tree is fine, but when I delete and then start adding anew, the tree gets duplicates in it quite often. The function that clears the tree seems to work just fine. Could gcc 3.3.3 be pulling my leg with its optimzers and should I make my BST volatile?
This is my first program using threads and I'm not very good at debugging with threads at all.