ghc 5.04.1 binary distribution for win32 does not contain Posix.
How can I use the posix package in win32 cygwin platform ?
thanks.
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No select or poll functions in Network module yet ?
listenOn and accept isn't enough for network programming.
IO multiplexing is needed.
It was a wish list.
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o
lsock <- listenOn $ PortNumber 9000
print lsock
mvar <- newMVar []
forkIO (thd_accept lsock mvar `finally` putMVar mvar [])
loopcats mvar `finally` putMVar mvar []
\end{code}
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{-
In FreeBSD ghc-5.04.2 the simple echo server below works fine.
(except for broken pipe. Installing signal handler will do good.)
It broadcasts "Welcome!" to all users repeatedly.
But in Windows XP, cygwin, ghc-5.04.3. It gets blocked on the
accept routine and wakes up for a moment when new conn
I checked out the CVS yesterday.
=== gcc version is
$ gcc -v
Reading specs from /usr/local/lib/gcc-lib/i386-pc-solaris2.8/3.2/specs
Configured with: ../configure --with-as=/usr/ccs/bin/as
--with-ld=/usr/ccs/bin/l
d --disable-nls
Thread model: posix
gcc version 3.2
== I configured with
$ ./confi
t I don't how to tweak it.
My file is like this.
GHC implementors and porters should be awared of this.
p.s. Compiling GHC project took almost whole day long :-(
Bootstraping from 4.08.2 and stage1, stange 2 ... :-(
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Ahn Ki-yung wrote:
>SunOS 5.8
>Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.8/2.95.3/specs
>gcc version 2.95.3 20010315 (release)
>In the posix related libaries there are two forign call definition.
>
>foreign import ccall unsafe "getpwuid_r"
&g
t;
Thanks, I'll look into this.
I left out two more fucntions :
getgrnam_r, getgrgid_r in have the same problem too.
p.s. I think changing the configure will be the easiest way.
If configure can find __posix_***_r stuff then use
Document says GHC uses non-blocking IO to be
thread friendly. But if it continues to poll on the
non blocking file descriptor. It should cost much
CPU load, but actually it doesn't :
for example if a server is wating an input from
a connected client, say using hGetLine, until
input comes in from th
C call blocks the whole process, and Concurret
module become meaningless. Isn't there any
library or wrapper that can avoid ccall from
blocking entire process ?
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eprocess e
printeval ([],e',[],[])
printNpreprocess e =
print e >> print e1 >> print e2 >> print e3 >> print e' >> return e'
where
((ns,[]),e1) = evalST ([1..],[]) (uniqueify e)
e2 = lambdalift negate e1
n MS Windows
command line. Surprisingly, it works in WinHugs. However, I cannot use
WinHugs for my purpose because the interactive calculator example in the
book also uses beep characters and ANSI codes which do not work in WinHugs.
Thanks for any hacks or sugges
Matti Niemenmaa 쓴 글:
Bulat Ziganshin wrote:
1. works for me in ghc:
getHiddenChar = liftM (chr.fromEnum) c_getch
foreign import ccall unsafe "conio.h getch"
c_getch :: IO CInt
Thanks to Bulat, Bayley, and Matti for suggestions and discussions.
At least for my purpose of running the partic
tEcho functions in the System.IO module to get no buffering and no
echoing the behavior.
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#x27;t work)
You can't escape from the black hole and ghci will start
eating up your memory unless kill the ghci process.
Now the black hole behaves like a real black hole :-)
Is this a ticketed bug, or should we make a new ticket?
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Ahn, Ki Yung
_
need Parsing.lhs from
the book hompage.http://www.cs.nott.ac.uk/~gmh/Parsing.lhs
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Ahn, Ki Yung
Calculator example from section 9.6 of Programming in Haskell,
Graham Hutton, Cambridge University Press, 2007.
Note: the definition for getCh in this example works with the
Glasgow Haskell Compi
enerics.Unit (+1
GHC.Generics.Unit (+ GHC.Generics.Unit (
But, what is this GHC.Generics.Unit thing and where is this documented?
Thanks,
Ahn, Ki Yung
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John Goerzen wrote:
Ahn, Ki Yung wrote:
I don't know the exact reason but this should not fail since I have
Debian packaged ghc 6.10.1 and OpenGL-2.2.1.1 on my system.
I think this is because the filename of the OpenGL shared library is
/usr/lib/libGL.so.1 rather than libGL.so. This i
ns used to make this code type check. And also, we welcome
any discussion whether this code should or should not in principle type
check.
Thanks in advance,
Ahn, Ki Yung
FYI, I had the following error message when I tried it on ghc 6.10.3.
(When I commented out the problematic line, the last e
Tom Schrijvers wrote:
Have you first, before you turn to GHC< considered whether this code
should be well-typed in any type system?
Review3.lhs:67:29:
Could not deduce (Expandable (Tuple (Map ((,) t2) ys)))
from the context (xs ~ t2 ::: ts2, Expandable t2)
arising from a use of
Ahn, Ki Yung wrote:
Another problem, which I haven't mentioned, I have when I tried to make
additional type family instance declarations that latest (stable)
Typo: I mean type class instance declaration of course.
distributions of GHC 6.10.x does not let me declare instanc
$ ghc --help
...
The User's Guide has more information about GHC's *many* options. An
online copy can be found here:
http://www.haskell.org/ghc/documentation.html
The above URL does not exist! Hope it gets fixed in
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