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Author vstinner
Recipients Anne Archibald, Manjusaka, gilles-duboscq, vstinner
Date 2021-02-18.18:03:15
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> For us it happens when using multiprocessing: the main process forks 2 processes and both use urlopen at roughly the same time. We are seeing this on Python 3.7.2 on macOS 10.14.3.

From what I understood, calling fork() (and then continue to execute regular Python code) is no longer safe in macOS 10.14 and must no longer be used. Only fork+exec is safe (spawn a new child process), but posix_spawn() is preferred on macOS. But I'm not a macOS expert.
Date User Action Args
2021-02-18 18:03:15vstinnersetrecipients: + vstinner, Manjusaka, Anne Archibald, gilles-duboscq
2021-02-18 18:03:15vstinnersetmessageid: <>
2021-02-18 18:03:15vstinnerlinkissue39853 messages
2021-02-18 18:03:15vstinnercreate