Troy Melhase wrote: >> The first time A starts, it should open a B process and start >> communicating with it. All other times an A instance starts it should >> simply talk with the B that already is open. > > B should write its process id to a location known by both > applications. When A starts, it should read that PID from the file > and attempt to communicate with the process having that PID. > > When B starts, it should also check for the file. If it's found and > if the PID in it is present in the process table, then B should exit. > Otherwise, it should start normally and write its own PID to the file.
Three very simple questions then. 1. How do I find out a running applications process ID 2. How do I check if a process ID is bound to a running application. 3. There won't be any issues with different applications trying to read and write the same file doing this? /buffis -- http://mail.python.org/mailman/listinfo/python-list
