Linked by Thom Holwerda on Sat 10th May 2014 20:12 UTC, submitted by Premislaus
BeOS & Derivatives

My area of interest is broadly defined kernel development. In the spring of 2013 I implemented ASLR and DEP which caused minor confusion due to "activation" of bugs that have been hidden but I think that overall it worked out well for Haiku. Later I tinkered a bit with RTM (Restricted Transactional Memory), new extension introduced in Haswells but the code will need a lot of work before it will become usable. From October to mid-January, I was employed by Haiku, Inc. to work on the scheduler and adaptating Haiku for work on systems with more than one logical processor. Among other things, I got rid of the 8 processors limit, which was quite firmly rooted in the ABI inherited from BeOS.

Great interview with a low-level Haiku developer.

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RE: Ouch
by jgfenix on Sun 11th May 2014 12:45 UTC in reply to "Ouch"
jgfenix
Member since:
2006-05-25

They wanted a microkernel following BeOS' philosophy. What I didn't understand is why they didn't use one of the modern ones that existed back then like Fiasco or Pistachio (they are even written in C++ just as they like).

Reply Parent Score: 3

RE[2]: Ouch
by tacks on Sun 11th May 2014 13:04 in reply to "RE: Ouch"
tacks Member since:
2014-05-03

They wanted a microkernel following BeOS' philosophy. What I didn't understand is why they didn't use one of the modern ones that existed back then like Fiasco or Pistachio (they are even written in C++ just as they like).


Well, they forked NewOS, which isn't even a microkernel. They call it a hybrid kernel, although I can't see why. It's basically just a modular monolith.

Reply Parent Score: 2

RE[3]: Ouch
by jgfenix on Sun 11th May 2014 13:09 in reply to "RE[2]: Ouch"
jgfenix Member since:
2006-05-25

If I remember correctly NewOS was created by one of Haiku's contributors with Haiku in mind.

Edited 2014-05-11 13:09 UTC

Reply Parent Score: 2