src: restore stdio on program exit by ktaborski · Pull Request #20592 · nodejs/node

Node leaves stdio file descriptors in non-blocking mode
when exiting. This has been reported, fixed, unfixed, ad nauseum.

nodejs/node#14752
nodejs/node#17737
nodejs/node#20592
nodejs/node#21257

Should this become a problem in more places, we could add such
a workaround elsewhere. But for now I'm limiting the ugliness to
the unit-tests container, where we see this cause a lot of failures.

Closes #9484

Before PR 20592, closing all handles associated with the main
event loop would also mean that `uv_tty_reset_mode()`
can’t function properly because the corresponding FDs have
already been closed.

Add regression tests for this condition.

Refs: #21020
Refs: #20592

PR-URL: #21027
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Before PR 20592, closing all handles associated with the main
event loop would also mean that `uv_tty_reset_mode()`
can’t function properly because the corresponding FDs have
already been closed.

Add regression tests for this condition.

Refs: #21020
Refs: #20592

PR-URL: #21027
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Record the state of the stdio file descriptors on start-up and restore
them to that state on exit.  This should prevent issues where node.js
sometimes leaves stdio in raw or non-blocking mode.

This is a reworked version of commit c2c9c0c from May 2018 that was
reverted in commit 14dc17d from June 2018. The revert was a little
light on details but I infer that the problem was caused by a missing
call to `uv_tty_reset_mode()`.

Apropos the NOLINT comments: cpplint doesn't understand do/while
statements, it thinks they're while statements without a body.

Fixes: nodejs#14752
Fixes: nodejs#21020
Original-PR-URL: nodejs#20592

Record the state of the stdio file descriptors on start-up and restore
them to that state on exit.  This should prevent issues where node.js
sometimes leaves stdio in raw or non-blocking mode.

This is a reworked version of commit c2c9c0c from May 2018 that was
reverted in commit 14dc17d from June 2018. The revert was a little
light on details but I infer that the problem was caused by a missing
call to `uv_tty_reset_mode()`.

Apropos the NOLINT comments: cpplint doesn't understand do/while
statements, it thinks they're while statements without a body.

Fixes: nodejs#14752
Fixes: nodejs#21020
Original-PR-URL: nodejs#20592

PR-URL: nodejs#24260
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

Record the state of the stdio file descriptors on start-up and restore
them to that state on exit.  This should prevent issues where node.js
sometimes leaves stdio in raw or non-blocking mode.

This is a reworked version of commit c2c9c0c from May 2018 that was
reverted in commit 14dc17d from June 2018. The revert was a little
light on details but I infer that the problem was caused by a missing
call to `uv_tty_reset_mode()`.

Apropos the NOLINT comments: cpplint doesn't understand do/while
statements, it thinks they're while statements without a body.

Fixes: #14752
Fixes: #21020
Original-PR-URL: #20592

PR-URL: #24260
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>