On 29 November 2005 06:29, Tomasz Zielonka wrote:
On Mon, Nov 28, 2005 at 11:27:46PM +, Joel Reymont wrote:
Folks,
How would you implement a timed read from a channel with STM? I would
like to return Timeout if nothing was read from a TChan in X ms.
Is this a basic two-thread timeout
Simon,
How is this easier than just calling threadDelay?
Ideally, I would be looking for something like reading from a TVar
with a timeout. So that you either get a Nothing (timeout) or the
value from the TVar. Can I implement it using the GHC timeout thread?
Thanks, Joel
On Nov
Doing music is a hard low level problem, a concurrency problem and is also an
interesting problem for intelligent and behavioural computation.
If it's true that Haskell can do its best on the second and third aspect, the
undertaking seems to wrap with foreing interface one of the many good C
On Tue, 29 Nov 2005, Santoemma Enrico wrote:
Doing music is a hard low level problem, a concurrency problem and is
also an interesting problem for intelligent and behavioural computation.
If it's true that Haskell can do its best on the second and third
aspect, the undertaking seems to
threadDelay is IO-only; there's no way to use threadDelay in an STM
transaction. For example, if you want to wait for a TVar to go from
Nothing to Just x with a timeout, you could do this:
readOrTimeout :: TVar (Maybe a) - Int - STM (Maybe a)
readOrTimeout t secs = do
timeout -
On Tue, Nov 29, 2005 at 12:00:03PM -, Simon Marlow wrote:
threadDelay is IO-only; there's no way to use threadDelay in an STM
transaction. For example, if you want to wait for a TVar to go from
Nothing to Just x with a timeout, you could do this:
readOrTimeout :: TVar (Maybe a) - Int
On 29 November 2005 12:08, Tomasz Zielonka wrote:
On Tue, Nov 29, 2005 at 12:00:03PM -, Simon Marlow wrote:
threadDelay is IO-only; there's no way to use threadDelay in an STM
transaction. For example, if you want to wait for a TVar to go from
Nothing to Just x with a timeout, you could
Hello
I have been playing with STM and want to log transactions to disk.
Defining a logging function like:
log h act = unsafeIOToSTM $ hPrint h act
works most the time. Aborts can be handled with:
abort h = log h Abort retry
atomic' h act = atomically (act `orElse` abort h)
But is it
Simon,
Where is this registerTimeout in the GHC code?
Thanks, Joel
On Nov 29, 2005, at 12:29 PM, Simon Marlow wrote:
But you could also implement this using registerTimeout, albeit with
some more code and an extra thread, and waitUntil requires an
implementation in the runtime which
On 29 November 2005 12:47, Joel Reymont wrote:
Where is this registerTimeout in the GHC code?
Well, it's not there yet :-) But I've hacked up an implementation this
morning so it might be in GHC 6.6.
Cheers,
Simon
___
Haskell-Cafe mailing
Would you share your implementation for us advanced users?
I could use Tomasz's workaround in the meantime but isn't GHC 6.6
supposed to be out in a year?
On Nov 29, 2005, at 12:52 PM, Simon Marlow wrote:
On 29 November 2005 12:47, Joel Reymont wrote:
Where is this registerTimeout in the
Malcolm Wallace wrote:
mempko [EMAIL PROTECTED] writes:
Hello, I have a program that just will not compile and I cannot figure
out why.
Wrong indentation. Tab stops are 8 spaces in Haskell, but your code
seems to assume 6 spaces.
-
module Main where
import
On 11/29/05, mempko [EMAIL PROTECTED] wrote:
Malcolm Wallace wrote:
mempko [EMAIL PROTECTED] writes:
Hello, I have a program that just will not compile and I cannot figure
out why.
Wrong indentation. Tab stops are 8 spaces in Haskell, but your code
seems to assume 6 spaces.
Real-time audio is much simpler these days due to SuperCollider, a
truly excellent cross platform audio synthesis server by James
McCartney.
http://www.audiosynth.com
http://supercollider.sf.net
To communicate with the server one only needs to implement the most
basic aspects of the Open
I've been reading some of the articles about comonads, and I thought the idea
of giving main the type OI () - () was pretty interesting. So I was wondering,
would it be possible to allow the type of main to be inferred? It seems like
IO ()
OI () - ()
OI () - IO ()
all make sense (at least I
[EMAIL PROTECTED] wrote:
Real-time audio is much simpler these days due to SuperCollider, a
truly excellent cross platform audio synthesis server by James
McCartney.
...
OSC messages can be timestamped, and SuperCollider has a sample
accurate scheduling queue, so language timing jitter can
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