2 messages, 2 authors, 2016-08-11 · open the first message on its own page
From: Johannes Schindelin <hidden>
Date: 2016-08-11 19:20:12
Hi, when you setup a lockfile, and then fork(), you could easily end up with atexit() kicking in to remove the lockfile, before the main process has a chance to commit. (Yes, I need to hold the lock long before the fork()). Any ideas how to solve the problem? Ciao, Dscho
From: Linus Torvalds <torvalds@osdl.org>
Date: 2016-08-11 20:39:14
On Sat, 28 Oct 2006, Johannes Schindelin wrote:
when you setup a lockfile, and then fork(), you could easily end up with atexit() kicking in to remove the lockfile, before the main process has a chance to commit. (Yes, I need to hold the lock long before the fork()).
The easiest way to handle this would be for the lockfile logic to just save the pid associated with each lockfile... And for the atexit function to just ignore it if the pid doesn't match.