* bug#2602: Emacs shell exits when executed command sets stdout and stderr to be non-blocking
@ 2009-03-08 20:56 William K. Foster
2016-01-24 22:03 ` Andrew Hyatt
0 siblings, 1 reply; 2+ messages in thread
From: William K. Foster @ 2009-03-08 20:56 UTC (permalink / raw)
To: bug-gnu-emacs
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Hello,
Create an application that does the following:
void setFdBlocking(int fd, bool block) {
// Set an fd's blocking flag on or off.
int flags;
if (0 > (flags = fcntl(fd, F_GETFL, 0))) {
throw;
}
if (block) {
flags &= ~O_NONBLOCK;
} else {
flags |= O_NONBLOCK;
}
if (0 > fcntl(fd, F_SETFL, flags)) {
throw;
}
}
// Make Stdout and Stderr be non-blocking.
setFdBlocking(1, false);
setFdBlocking(2, false);
If you execute the application from a shell inside emacs, the shell will
exit when the command returns.
This does not happen for a shell outside of emacs.
Thanks.
-William
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^ permalink raw reply [flat|nested] 2+ messages in thread
* bug#2602: Emacs shell exits when executed command sets stdout and stderr to be non-blocking
2009-03-08 20:56 bug#2602: Emacs shell exits when executed command sets stdout and stderr to be non-blocking William K. Foster
@ 2016-01-24 22:03 ` Andrew Hyatt
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Hyatt @ 2016-01-24 22:03 UTC (permalink / raw)
To: William K. Foster; +Cc: 2602
I cannot reproduce this on Emacs 25. Can you let me know if you are
still able to see this bug, otherwise I'll close this issue.
"William K. Foster" <wkf@alum.mit.edu> writes:
> Hello,
>
> Create an application that does the following:
>
> void setFdBlocking(int fd, bool block) {
> // Set an fd's blocking flag on or off.
> int flags;
>
> if (0 > (flags = fcntl(fd, F_GETFL, 0))) {
> throw;
> }
>
> if (block) {
> flags &= ~O_NONBLOCK;
> } else {
> flags |= O_NONBLOCK;
> }
>
> if (0 > fcntl(fd, F_SETFL, flags)) {
> throw;
> }
> }
>
> // Make Stdout and Stderr be non-blocking.
> setFdBlocking(1, false);
> setFdBlocking(2, false);
>
> If you execute the application from a shell inside emacs, the shell will exit when the command returns.
>
> This does not happen for a shell outside of emacs.
>
> Thanks.
>
> -William
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2009-03-08 20:56 bug#2602: Emacs shell exits when executed command sets stdout and stderr to be non-blocking William K. Foster
2016-01-24 22:03 ` Andrew Hyatt
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