{"record":{"id":"323f42a2af72edb8","repo":"can1357/oh-my-pi","slug":"istimedoutjuliacancellation-executionoptions-sig","errorCode":null,"errorMessage":"${isTimedOutJuliaCancellation(executionOptions.signal.reason, executionOptions.signal)} (Julia execution cancelled)","messagePattern":"(.+?) \\(Julia execution cancelled\\)","errorType":"exception","errorClass":"JuliaExecutionCancelledError","httpStatus":null,"severity":"warning","filePath":"packages/coding-agent/src/eval/jl/executor.ts","lineNumber":249,"sourceCode":"\nexport async function executeJulia(code: string, options?: JuliaExecutorOptions): Promise<JuliaResult> {\n\tconst cwd = normalizeKernelSessionCwd(options?.cwd ?? getProjectDir());\n\tconst deadlineMs =\n\t\toptions?.deadlineMs !== undefined\n\t\t\t? options.deadlineMs\n\t\t\t: options?.timeoutMs !== undefined && options.timeoutMs > 0\n\t\t\t\t? getExecutionDeadlineMs(options)\n\t\t\t\t: undefined;\n\tconst executionOptions: JuliaExecutorOptions = {\n\t\t...(options ?? {}),\n\t\tcwd,\n\t\tdeadlineMs,\n\t};\n\n\ttry {\n\t\trequireRemainingTimeoutMs(deadlineMs);\n\t\tif (executionOptions.signal?.aborted) {\n\t\t\tthrow new JuliaExecutionCancelledError(\n\t\t\t\tisTimedOutJuliaCancellation(executionOptions.signal.reason, executionOptions.signal),\n\t\t\t);\n\t\t}\n\t\tawait ensureKernelAvailable(cwd, executionOptions);\n\t\tawait ensureToolBridge(executionOptions);\n\t\treturn await sessionRegistry.executeOnSession(code, cwd, executionOptions);\n\t} catch (err) {\n\t\tif (isJuliaCancellationError(err) || executionOptions.signal?.aborted) {\n\t\t\treturn createCancelledJuliaResult(isTimedOutJuliaCancellation(err, executionOptions.signal));\n\t\t}\n\t\tthrow err;\n\t}\n}\n","sourceCodeStart":231,"sourceCodeEnd":263,"githubUrl":"https://github.com/can1357/oh-my-pi/blob/969062200754ea02cfac922e5ebb8c608c079e15/packages/coding-agent/src/eval/jl/executor.ts#L231-L263","documentation":"At the top of `executeJulia`, before any kernel work, the function checks whether the caller's AbortSignal is already aborted and throws `JuliaExecutionCancelledError` with a boolean `timedOut` flag (true when the abort reason was a timeout). The error is then caught by `executeJulia` itself and converted into a cancelled `JuliaResult` (\"[execution cancelled]\" or a \"[cell timed out after Ns]\" annotation) rather than propagating — so callers see a cancelled result, not a throw.","triggerScenarios":"`executeJulia(code, { signal, ... })` is invoked with a signal that is already aborted: an eval harness that timed the cell out before dispatch, code submitted after cancellation, or reuse of a signal from a completed/cancelled operation.","commonSituations":"Cell timeout expiring while previous work (queueing, dependency checks) consumed the budget; harness cancelling a batch and dispatching remaining queued cells against the same signal; passing a stale signal from a prior request.","solutions":["Check `signal.aborted` before calling `executeJulia` and skip the call if already cancelled.","Increase the cell's `timeoutMs`/`deadlineMs` so the budget isn't exhausted before execution starts.","Create a fresh AbortController per cell instead of sharing one signal across the run.","Treat the returned cancelled JuliaResult (output contains the timeout/cancelled annotation) as expected behavior rather than a bug."],"exampleFix":"// before: dispatch against a possibly-dead signal\nconst r = await executeJulia(code, { signal: sharedSignal });\n// after: per-cell controller\nconst ctrl = new AbortController();\nsetTimeout(() => ctrl.abort(), 60_000);\nconst r = await executeJulia(code, { signal: ctrl.signal });","handlingStrategy":"validation","validationCode":"if (signal?.aborted) {\n  return cancelledResult(); // don't call executeJulia with a dead signal\n}","typeGuard":null,"tryCatchPattern":"const r = await executeJulia(code, { signal });\nif (r.cancelled) {\n  // output contains \"[execution cancelled]\" or \"[cell timed out after Ns]\"\n  handleCancel(r.output);\n}","preventionTips":["Check `signal.aborted` before dispatching each cell.","Use a fresh AbortController per cell rather than a run-wide signal.","Size timeoutMs/deadlineMs to include queueing and kernel startup time.","Treat `result.cancelled === true` on the returned JuliaResult as normal control flow."],"tags":["abort","timeout","cancellation","julia"],"backgroundTag":"abort-signal-already-aborted","analyzedSha":"969062200754ea02cfac922e5ebb8c608c079e15","analyzedAt":"2026-08-31T10:29:35.737Z","schemaVersion":2},"datasetVersion":"2026-08-31T14:17:45.589Z"}