March 24, 2009
Spent the morning in a session on making AI characters more interesting, and then snuck out of the AI summit to go see a day-long tutorial on multithreading techniques for games. Intel has some pretty slick tools coming out soon, which really make it a breeze to find and eliminate common threading …
March 23, 2009
I'm officially checked in and hanging out at the press lounge here at GDC. So far everything has been fairly smooth (at least for me) and it promises to be a nice and busy year.
On the downside, nothing terrifically interesting has happened yet, so I really have very little to say.
I'm covering the A…
On the downside, nothing terrifically interesting has happened yet, so I really have very little to say.
I'm covering the A…
March 21, 2009
Epoch GDC2009 Preview Release
I've officially completed the GDC 2009 Preview Edition of the Epoch SDK. This release includes quite a few major changes, including the foundations of Epoch's all-important multiprocessing support.
You can get the juicy goodness directly from here on GDNet - or, you can …
I've officially completed the GDC 2009 Preview Edition of the Epoch SDK. This release includes quite a few major changes, including the foundations of Epoch's all-important multiprocessing support.
You can get the juicy goodness directly from here on GDNet - or, you can …
March 17, 2009
I finally got a lockless FIFO implemented for passing messages between Epoch tasks. Like most lockless code, it works by the skin of its teeth, and a little dose or two of pure luck.
Here's the final code for those interested:
Here's the final code for those interested:
class LocklessMailbox
{
public:
//
// Construct and initialize the read and…
March 16, 2009
After significant amounts of scouring across the intertron, and after pulling out large clumps of hair, I've managed to get lock-free message passing implemented in Epoch. This is cool because it makes it trivial to throw hundreds of messages around between tasks, and it's much more efficient than …
March 15, 2009
The bulk of my day has been sacrificed upon the alter of the synchronization gods. I am trying (thus far with little success) to implement a lock-free queue for sending messages between Epoch tasks. While progress is being made, it's slow going, as I'm pretty much entirely in uncharted territory.
As…
As…
March 14, 2009
Haven't really had any single big focus lately; instead I'm just working on polishing up existing functionality, doing some code cleanup, and doing the occasional bugfix.
The results of this aren't really easy to show, obviously, but there is one advance - the acceptmsg() function can now be passed …
The results of this aren't really easy to show, obviously, but there is one advance - the acceptmsg() function can now be passed …
March 13, 2009
Against my better judgment, I decided to press forward on getting message passing functional. It's taken a fair bit of time, but actually it isn't quite as bad as I thought it would be.
At the moment I use a simple mutex-guarded list of messages, referred to as a task's "mailbox". When a message is …
At the moment I use a simple mutex-guarded list of messages, referred to as a task's "mailbox". When a message is …
March 11, 2009
After some extended discussions, I've come up with a system that I'm almost completely happy with.
entrypoint : () -> ()
{
task(async)
{
responsemap(responses)
{
some_message(integer(foo)) => { do_stuff(foo) }
other_message(integer(lots), integer(of), integer(params)) =>
{
do()
…
March 11, 2009
I've been toying around with various syntax options for the message passing model. So far I'm not terribly happy with any of them, but I have settled on one of the lesser evils. I'd like to just kick this out and see if anyone has some thoughts on how to improve it.
Unfortunately I can't afford to l…
Unfortunately I can't afford to l…
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