Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows
XP
+---
Reporter: FalconNL| Owner:
Type: bug | Status: new
Priority: high| Milestone: 6.10.2
Component: libraries/base |Version: 6.8.2
Severity: normal | Resolution:
Keywords: hsetbuffering buffering buffer | Difficulty: Unknown
Testcase: | Architecture: x86
Os: Windows |
+---
Comment (by camio):
Alistar Bayley noted this workaround in haskell-cafe
{{{
{-# LANGUAGE ForeignFunctionInterface #-}
import Data.Char
import Control.Monad (liftM)
import Foreign.C.Types
getHiddenChar = liftM (chr.fromEnum) c_getch
foreign import ccall unsafe conio.h getch
c_getch :: IO CInt
}}}
--
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:11
GHC http://www.haskell.org/ghc/
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Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP +--- Reporter: FalconNL| Owner: Type: bug | Status: new Priority: normal | Milestone: 6.10.2 Component: libraries/base |Version: 6.8.2 Severity: normal | Resolution: Keywords: hsetbuffering buffering buffer | Difficulty: Unknown Testcase: | Architecture: x86 Os: Windows | +--- Changes (by camio): * cc: camio (added) Comment: This is also very important for those of us working on FRP at Anygma since it precludes simple console-based FRP examples. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP +--- Reporter: FalconNL| Owner: Type: bug | Status: new Priority: normal | Milestone: 6.10.2 Component: libraries/base |Version: 6.8.2 Severity: normal | Resolution: Keywords: hsetbuffering buffering buffer | Difficulty: Unknown Testcase: | Architecture: x86 Os: Windows | +--- Changes (by igloo): * milestone: 6.10.1 = 6.10.2 -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP +--- Reporter: FalconNL| Owner: Type: bug | Status: new Priority: normal | Milestone: 6.10.1 Component: libraries/base |Version: 6.8.2 Severity: normal | Resolution: Keywords: hsetbuffering buffering buffer | Difficulty: Unknown Testcase: | Architecture: x86 Os: Windows | +--- Comment (by igloo): See also #2568. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP +--- Reporter: FalconNL| Owner: Type: bug | Status: new Priority: normal | Milestone: 6.10.1 Component: GHCi|Version: 6.8.2 Severity: normal | Resolution: Keywords: hsetbuffering buffering buffer | Difficulty: Unknown Testcase: | Architecture: x86 Os: Windows | +--- Changes (by igloo): * milestone: 6.8.3 = 6.10.1 -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows
XP
+---
Reporter: FalconNL| Owner:
Type: bug | Status: new
Priority: normal | Milestone: 6.8.3
Component: GHCi|Version: 6.8.2
Severity: normal | Resolution:
Keywords: hsetbuffering buffering buffer | Difficulty: Unknown
Testcase: | Architecture: x86
Os: Windows |
+---
Comment (by judah):
There is code in {{{base/cbits/consUtils.c:set_console_buffering}}} to
disable Windows line buffering (by calling the Win32 function
`SetConsoleMode`).
However, the code in `GHC.Handle` which is supposed to call that function
was `#ifdef`'ed out on mingw in the following commit:
http://cvs.haskell.org/cgi-
bin/cvsweb.cgi/fptools/libraries/base/GHC/Handle.hs#rev1.14
From the comments in `System.Posix.Internals`:
{{{
-- 'raw' mode for Win32 means turn off 'line input' (= buffering and
-- character translation for the console.) The Win32 API for doing
-- this is GetConsoleMode(), which also requires echoing to be disabled
-- when turning off 'line input' processing. Notice that turning off
-- 'line input' implies enter/return is reported as '\r' (and it won't
-- report that character until another character is input..odd.) This
-- latter feature doesn't sit too well with IO actions like IO.hGetLine..
}}}
I'm not that experienced with Windows programming, but maybe instead of
changing the `ConsoleMode`, we could call the lower-level
`ReadConsoleInput/PeekConsoleInput` when we want to read only one
character at a time.
--
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:4
GHC http://www.haskell.org/ghc/
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Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP +--- Reporter: FalconNL| Owner: Type: bug | Status: new Priority: normal | Milestone: 6.8.3 Component: GHCi|Version: 6.8.2 Severity: normal | Resolution: Keywords: hsetbuffering buffering buffer | Difficulty: Unknown Testcase: | Architecture: x86 Os: Windows | +--- Changes (by simonmar): * priority: low = normal Comment: This is important to folks here at Galois; I'll try to look at it before 6.8.3. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP +--- Reporter: FalconNL| Owner: Type: bug | Status: new Priority: low | Milestone: 6.8.3 Component: GHCi|Version: 6.8.2 Severity: normal | Resolution: Keywords: hsetbuffering buffering buffer | Difficulty: Unknown Testcase: | Architecture: x86 Os: Windows | +--- Changes (by igloo): * priority: normal = low Comment: OK, I can reproduce the problem. At the Haskell level the problem is that asyncRead# isn't returning when a key is pressed; I haven't followed all the RTS stuff through to see where it goes wrong. Could be related to #806. I doubt we'll get to this for 6.8.3, so I'm marking it as low priority. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
Re: [GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP +--- Reporter: FalconNL| Owner: Type: bug | Status: new Priority: normal | Milestone: 6.8.3 Component: GHCi|Version: 6.8.2 Severity: normal | Resolution: Keywords: hsetbuffering buffering buffer | Difficulty: Unknown Testcase: | Architecture: x86 Os: Windows | +--- Changes (by igloo): * difficulty: = Unknown * milestone: = 6.8.3 Comment: Thanks for the report! It works for me on Linux; I can't test on Windows at the moment. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler___ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
[GHC] #2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows XP
#2189: hSetBuffer stdin NoBuffering doesn't seem to work in ghc 6.8.2 on Windows
XP
---+
Reporter: FalconNL| Owner:
Type: bug | Status: new
Priority: normal | Component: GHCi
Version: 6.8.2 |Severity: normal
Keywords: hsetbuffering buffering buffer |Testcase:
Architecture: x86 | Os: Windows
---+
The following program repeats inputted characters until the escape key is
pressed.
{{{
import IO
import Monad
import Char
main :: IO ()
main = do hSetBuffering stdin NoBuffering
inputLoop
inputLoop :: IO ()
inputLoop = do i - getContents
mapM_ putChar $ takeWhile ((/= 27) . ord) i
}}}
Because of the hSetBuffering stdin NoBuffering line it should not be
necessary to press the enter key between keystrokes. This program works
correctly in WinHugs (sep 2006 version). However, GHC 6.8.2 does not
repeat the characters until the enter key is pressed. The problem was
reproduced with all GHC executables (ghci, ghc, runghc, runhaskell), using
both cmd.exe and command.com on Windows XP Professional.
--
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/2189
GHC http://www.haskell.org/ghc/
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