Author ronaldoussoren
Recipients gregory.p.smith, izbyshev, pablogsal, ronaldoussoren, vstinner
Date 2019-01-25.07:41:52
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1548402112.47.0.406024778106.issue35823@roundup.psfhosted.org>
In-reply-to
Content
Issue #34663 contains some earlier discussion about vfork, in the context of supporting a specific posix_spawn flag on Linux.

W.r.t. closing all file descriptors > 2: posix_spawn_file_actions_addclose can do this when using posix_spawn. That would have a performance cost, you'd basically have to resort to closing all possible file descriptors and cannot use the smarter logic used in _posixsubprocess. However, the smarter closing code in _posixsubprocess is not safe w.r.t. vfork according to the comment above _close_open_fds_maybe_unsafe: that function uses some functions that aren't async-safe and one of those calls malloc.
History
Date User Action Args
2019-01-25 07:41:53ronaldoussorensetrecipients: + ronaldoussoren, gregory.p.smith, vstinner, izbyshev, pablogsal
2019-01-25 07:41:52ronaldoussorensetmessageid: <1548402112.47.0.406024778106.issue35823@roundup.psfhosted.org>
2019-01-25 07:41:52ronaldoussorenlinkissue35823 messages
2019-01-25 07:41:52ronaldoussorencreate