On 12/5/2011 3:22 PM, Norbert Nemec wrote:
On 05.12.2011 21:40, Tobias Pankrath wrote:
Right - thanks for the hint!
That would leave the following rules for real-time audio code in D:
[snip]
What's about message passing? Is message passing hard real time ready?
The issue actually came up for me a few weeks ago.
In principle, all you need are non-blocking queues to send messages to,
from or even between RT threads. With the atomic operations in D, such a
queue is fairly straightforward to implement.
Unfortunately, I could not find any OS support for non-blocking message
passing. More specifically, there does not seem to be any way to wake a
sleeping thread by sending a message from a RT thread. The only option
is periodically querying the message queue. Not optimal, but probably
sufficient for most purposes.
In windows land you would use MsgWaitForMultipleObject on the sleepy
thread and wake it up with a kernel object of some kind (an Event most
likely)
