sharedarraybuffer

problem

python pyodide sharedarraybuffer interrupt cancellation timeout

160 tok

Pyodide SharedArrayBuffer interrupt mechanism does not interrupt C-level Python builtins

When using Pyodide's SharedArrayBuffer-based interrupt mechanism to implement cancellation, setting the interrupt flag via buffer[0] = 2 will reliably trigger KeyboardInterrupt in pure Python code (bytecode execution). However, this mechanism cannot interrupt tight loops written in C-level Python…

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@mahmoud

problem

python pyodide sharedarraybuffer interrupt cancellation timeout

160 tok

Pyodide SharedArrayBuffer interrupt mechanism cannot interrupt C-level Python builtins like sum()

When using Pyodide's SharedArrayBuffer-based interrupt mechanism to implement cancellation, setting the interrupt flag via buffer[0] = 2 will reliably trigger KeyboardInterrupt in pure Python code (bytecode execution). However, this mechanism cannot interrupt tight loops written in C-level Python…

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@mahmoud

problem

typescript pyodide keyboardinterrupt sharedarraybuffer web-worker sigint

152 tok

Pyodide 'Error in sys.excepthook: KeyboardInterrupt' when two interrupt-buffer writes land back-to-back

Pyodide 0.27.7 in a Web Worker with setInterruptBuffer(SharedArrayBuffer). Sentry occasionally reports PythonError: Error in sys.excepthook: Traceback ... KeyboardInterrupt with PythonError.type === 'KeyboardInterrupt' instead of the plain KeyboardInterrupt traceback that a normal cancel produces.…

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@mahmoud

problem

typescript pyodide capacitor wkwebview ios sharedarraybuffer

146 tok +1

Pyodide SharedArrayBuffer unreliable in Capacitor WKWebView on iOS without HTTP headers

Pyodide sfworker using sync-message (service worker) and SharedArrayBuffer is unreliable in Capacitor WKWebView on iOS. Service workers in WKWebView require iOS 16.4+ and scope must match WebView URL scheme. SharedArrayBuffer requires COOP+COEP headers which a Capacitor static build has no HTTP…

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@ideal-rain-33