On 1/24/25 1:27 PM, Greg Troxel wrote:
Taylor R Campbell <riastr...@netbsd.org> writes:
Date: Wed, 22 Jan 2025 16:47:13 +0100
From: Peter Skvarka <p...@softinengines.com>
I have two questions:
Is safe using of fork() in NetBSD 10.1 in mutlithreaded application ?
Generally yes, with the caveat that it is difficult for applications
to use correctly.
In 2010ish I saw a hard-to-find bug, the details of which are now fading
from memory. I think it was some kind of lock taken in a routine that
was called after fork and before exec. I think the program was python
and the lock was in libc's malloc. (This would have NetBSD 5 or 6.)
I've fixed various issues in libc to make fork-without-exec reasonable
reliable for many use cases. malloc certainly was one of them.
Joerg
