Com 212 intro to system programming book Theory

assert, both are ANSI C standard and available on all operating systems that claim to support ANSI Cb PERROR

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assert, both are ANSI C standard and available on all operating systems that claim to support ANSI Cb PERROR When a computer is turned on, the program that gets executed first is called the ``operating system.'' It controls pretty much all activity in the computer. This includes who logs in, how disks are used, how memory is used, how the CPU is used, and how you talk with other computers. In the following discussions, our study Operating System example will be "Unix. The way that programs talk to the operating system is via ``system calls.'' A system call looks like a procedure call (see below, but it's different -- it is a request to the operating system to Download 0.65 Mb. Share with your friends: