Handout 06 and all examples in /usr/class/cs110/lecture-examples/threads-cpp 

- stat/lstat - get information about a specific file/directory (ex. see here)
- opendir (ex how to iterate through directory) 
- open(pathname, permissions, mode), returns an FD.  Permissions/flags: O_RDONLY, O_WRONLY, O_RDWR, O_CREAT, O_EXCL. 
- After calling read, an internal iterator is incremented so next time you call read, you read next data
- write(fd, buffer, bytesToWrite) may not always write bytesToWrite (keep trying in a while loop)
- dup2(curfd, newfd) sets newfd to the curfd 

Like inodes and the different layers of the file system

• UNIX v6 file system concepts, data structures, and layers 
• Assignment 1 and 2 

- fork() - returns the processid of forked process to parent, and returns 0 to the child process. 
- waitpid(pid, int *status, flags) - flags are . Status macros interpret status 
- 

Single code base controlling multiple processes 

ALL OF EXAMPLES IN THE LECTURE-EXAMPLES
/usr/class/cs110/lecture-examples/thread-c!

How to identify them?

How to instantiate one, how to use join method 

• How the semaphore combines all of these
• How to use mutexes and semaphores to protect against race conditions, protect against senseless busy waiting, deadlock, and minimize processesor time wasted by a thread unable to do meaningful work 

Discussed in lecture and the reading from the second (online) textbook 

Also know the various data structures associated with it 

KNow the family of socket address records 

socket, bind, connect, listen, accept  

/usr/class/cs110/lecture-examples/networking 
(popen and pclose)

Assignment 6 

Assignment 7 

• Lightweight (no fuss of data structures or objects), more useful over network connections since all you have are two functions read/write
• BUT only have those two functions 

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