C H A P T E R 26 Runtime The runtime environment of an Objective-C application has some traits that you should be aware of. These include the information about the Mac OS X process that comprises your running application, its environment variables, the connections with its parent process, and so on. Some are inherited from the operating system, while others are features of Objective-C and the Cocoa framework. Many have already been described in other chapters. We will briefly review them here along with other important aspects of the runtime environment. Process In Mac OS X, every Objective-C program executes as a process. Technically, Java bytecode executes in an