os: Stdin does not support SetReadDeadline #26579
Comments
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I can't really see the value in this.. Care to give a common use case?
Currently it's a function specially for net interfaces, the usual way to
timeout a read from console is using goroutines.
…On Wed, Jul 25, 2018, 02:38 Manlio Perillo ***@***.***> wrote:
Please answer these questions before submitting your issue. Thanks!
What version of Go are you using (go version)?
go1.11beta2 linux/amd64
Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (go env)?
GOARCH="amd64"
GOBIN="/home/manlio/.local/bin"
GOCACHE="/home/manlio/.cache/go-build"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/manlio/.local/lib/go:/home/manlio/code/src/go"
GOPROXY=""
GORACE=""
GOROOT="/home/manlio/sdk/go1.11beta2"
GOTMPDIR=""
GOTOOLDIR="/home/manlio/sdk/go1.11beta2/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0
-fdebug-prefix-map=/tmp/go-build768901181=/tmp/go-build
-gno-record-gcc-switches"
What did you do?
I tried to call SetReadDeadline on os.Stdin but it returns an error.
I think that when Stdin is connectet to a terminal, SetReadDeadline
should be supported.
The same applies (*probably*) to Stdout, with SetWriteDeadline.
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Making this change would be unwise, for somewhat tedious reasons. Since standard input is just one descriptor, it's feasible to handle deadlines through a support goroutine, rather than by using |
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https://groups.google.com/forum/#!topic/golang-nuts/XDMatOviHrI https://play.golang.org/p/6llIVJbDxQw works with a FIFO, works with a |
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Looking at the source code in |
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I don't know how to answer your question except to repeat what I already said: it could be done but it would be a bad idea. (On Unix systems, I don't know about Windows.) |
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I agree that is a very bad idea (ponylang/ponyc#205). However if it works on Windows and not on UNIX, this should probably documented somewhere. |
Please answer these questions before submitting your issue. Thanks!
What version of Go are you using (
go version)?go1.11beta2 linux/amd64
Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (
go env)?GOARCH="amd64"
GOBIN="/home/manlio/.local/bin"
GOCACHE="/home/manlio/.cache/go-build"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/manlio/.local/lib/go:/home/manlio/code/src/go"
GOPROXY=""
GORACE=""
GOROOT="/home/manlio/sdk/go1.11beta2"
GOTMPDIR=""
GOTOOLDIR="/home/manlio/sdk/go1.11beta2/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build768901181=/tmp/go-build -gno-record-gcc-switches"
What did you do?
I tried to call
SetReadDeadlineonos.Stdinbut it returns an error.I think that when
Stdinis connectet to a terminal,SetReadDeadlineshould be supported.The same applies (probably) to
Stdout, withSetWriteDeadline.The text was updated successfully, but these errors were encountered: