Thorsten BallandBennet 5a7b8f7fe3 linux: Fix restarting by waiting for sockets to be closed (#11488)
This fixes a race-condition that showed up when trying to restart
Nightly/Preview/...

When running with these release channels, Zed tries to ensure that
there's only one instance of Zed running.

It does that by listening on a TCP socket to which other instances can
connect on start. If the other instance receives a message, it knows
that another Zed instance is running and exits.

On Linux, though, we ran into a race condition:

1. `kill -0`, which checks whether a process is still running, returns
an error, signalling that the old Zed process has exited
2. BUT: the process was still listening on the TCP port.

It seems like that on Linux, process resources aren't guaranteed to be
cleaned up as soon as signal handling stops working for a process.

The fix is to wait until the process is no longer listening on any TCP
sockets.

There's a slight downside to this: GPUI processes that never listen on
any TCP sockets now have to pay the cost of an additional `lsof` call
when restarting. We do think that it's a reasonable tradeoff for now
though, since the other options (extending the platform interface to
provide callbacks, sharing the listening port in the framework, ...)
seem wider-reaching only to fix a very local bug.



Release Notes:

- N/A

Co-authored-by: Bennet <bennetbo@gmx.de>
2024-05-07 15:46:41 +02:00
2024-03-05 10:56:14 -07:00
2024-05-06 11:45:17 -04:00
2022-10-17 09:59:16 +02:00
2024-02-15 18:35:43 -05:00
WIP
2023-12-14 09:25:14 -07:00
2024-05-05 15:02:50 +02:00
2024-04-15 14:00:56 -06:00
2024-05-03 19:53:22 -04:00
2024-05-05 15:02:50 +02:00
2024-05-03 15:34:44 -06:00

Zed

CI

Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.

Installation

You can download Zed today for macOS (v10.15+).

Support for additional platforms is on our roadmap:

For macOS users, you can also install Zed using Homebrew:

brew install --cask zed

Alternatively, to install the Preview release:

brew install --cask zed@preview

Developing Zed

Contributing

See CONTRIBUTING.md for ways you can contribute to Zed.

Also... we're hiring! Check out our jobs page for open roles.

Licensing

License information for third party dependencies must be correctly provided for CI to pass.

We use cargo-about to automatically comply with open source licenses. If CI is failing, check the following:

  • Is it showing a no license specified error for a crate you've created? If so, add publish = false under [package] in your crate's Cargo.toml.
  • Is the error failed to satisfy license requirements for a dependency? If so, first determine what license the project has and whether this system is sufficient to comply with this license's requirements. If you're unsure, ask a lawyer. Once you've verified that this system is acceptable add the license's SPDX identifier to the accepted array in script/licenses/zed-licenses.toml.
  • Is cargo-about unable to find the license for a dependency? If so, add a clarification field at the end of script/licenses/zed-licenses.toml, as specified in the cargo-about book.
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GPUI – Community Edition maintained by Oak Team
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