any commercial software number of applications that may run concurrently decremented. use, requests to start the application have to wait. Assume an application needs to call "access and release" when it starts up and finishes packages provide a given number of licenses, indicating the . When the application is started, the license count is When the application is terminated, the license count is incremented. If all licenses are in a) Use semaphore to coordinate the accessing and releasing se monitor (or lock) and conditional variable to coordinate the accessing and releasing