The Unix Time Sharing System (1974) [pdf]

#1

Post by id_ris » Sun, Oct 25, 2015, 3:10 PM UTC

The Unix Time Sharing System (1974) [pdf]
cs.berkeley.edu

Re: The Unix Time Sharing System (1974) [pdf]

#2

Post by ape4 » Sun, Oct 25, 2015, 7:25 PM UTC

Looks like it could be good.

Re: The Unix Time Sharing System (1974) [pdf]

#3

Post by wtbob » Sun, Oct 25, 2015, 8:51 PM UTC

I think I was most surprised to see that fork used to take a label. How did that work?

Re: The Unix Time Sharing System (1974) [pdf]

#4

Post by tomconte » Sun, Oct 25, 2015, 8:52 PM UTC

Annotated by whom?

Re: The Unix Time Sharing System (1974) [pdf]

#5

Post by pacaro » Sun, Oct 25, 2015, 11:01 PM UTC

wtbob wrote: post #3

I think I was most surprised to see that fork used to take a label. How did that work?

Just guessing, but the label probably became an address on compilation, so one branch of the fork would return in the usual way, the other would jump to the label/address

Re: The Unix Time Sharing System (1974) [pdf]

#6

Post by Someone » Sun, Oct 25, 2015, 11:10 PM UTC

wtbob wrote: post #3

I think I was most surprised to see that fork used to take a label. How did that work?

From the article: "The new processes differ only in that one is considered the parent process: in the parent, control returns directly from the fork, while in the child, control is passed to location label"