{"record":{"id":"2b4783ad45a6e898","repo":"zed-industries/zed","slug":"failed-to-create-a-ping","errorCode":null,"errorMessage":"Failed to create a Ping.","messagePattern":"Failed to create a Ping\\.","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/gpui_linux/src/linux/dispatcher.rs","lineNumber":194,"sourceCode":"        res\n    }\n}\n\nimpl<T> Drop for PriorityQueueCalloopSender<T> {\n    fn drop(&mut self) {\n        self.ping.ping();\n    }\n}\n\npub struct PriorityQueueCalloopReceiver<T> {\n    receiver: PriorityQueueReceiver<T>,\n    source: calloop::ping::PingSource,\n    ping: calloop::ping::Ping,\n}\n\nimpl<T> PriorityQueueCalloopReceiver<T> {\n    pub fn new() -> (PriorityQueueCalloopSender<T>, Self) {\n        let (ping, source) = calloop::ping::make_ping().expect(\"Failed to create a Ping.\");\n\n        let (tx, rx) = PriorityQueueReceiver::new();\n\n        (\n            PriorityQueueCalloopSender::new(tx, ping.clone()),\n            Self {\n                receiver: rx,\n                source,\n                ping,\n            },\n        )\n    }\n}\n\nuse calloop::channel::Event;\n\n#[derive(Debug)]\npub struct ChannelError(calloop::ping::PingError);","sourceCodeStart":176,"sourceCodeEnd":212,"githubUrl":"https://github.com/zed-industries/zed/blob/f4178619acd0d47ea1f76a2025c42962c6d6638c/crates/gpui_linux/src/linux/dispatcher.rs#L176-L212","documentation":"PriorityQueueCalloopReceiver::new calls calloop::ping::make_ping to build the wakeup mechanism for the queue; make_ping returned Err (pipe/eventfd creation failed, usually fd exhaustion) and the expect panics before the queue can be used.","triggerScenarios":"Thrown at crates/gpui_linux/src/linux/dispatcher.rs:194 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Check file descriptor limits (ulimit -n) and fix fd leaks","Retry queue creation after resources free up","Fall back to a polling-based queue without ping if eventfd is unavailable"],"exampleFix":null,"handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"f4178619acd0d47ea1f76a2025c42962c6d6638c","analyzedAt":"2026-08-20T19:29:52.058Z","contentChangedAt":"2026-08-20T19:29:52.058Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}