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



Download 0.65 Mb.
View original pdf
Page48/72
Date13.05.2021
Size0.65 Mb.
#56617
1   ...   44   45   46   47   48   49   50   51   ...   72
com-212-introduction-to-system-programming-theory
9833 SS1 FISHERY LESSON NOTE
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:
1   ...   44   45   46   47   48   49   50   51   ...   72




The database is protected by copyright ©ininet.org 2024
send message

    Main page