From: utzoo!decvax!cca!ima!johnl
Newsgroups: net.unix-wizards
Title: Re: Special versions of execl - (nf)
Article-I.D.: ima.310
Posted: Fri Apr  8 03:26:58 1983
Received: Fri Apr  8 06:08:39 1983

#R:rdin:-26600:ima:20400004:000:561
ima!johnl    Apr  7 12:41:00 1983

	Are there any known versions of execl that allow children
	to share parental d-space?  Our goal is to allow multiple
	asynchronous processes to communicate through shared external
	variables.

System V has provision for shared "named" read/write memory segments.
(I say "named" because the names are 32-bit numbers, making the name
space kind of small.)  It also has counting semaphores and message queues.
What's more, unlike 4.2BSD, it's available right now.

John Levine, decvax!yale-co!jrl, ucbvax!cbosgd!ima!johnl,
{research|alice|rabbit|amd70}!ima!johnl