From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 03 Apr 2015 22:01:46 GMT
Subject: Re: Freeing struct lock_file?
Message-ID: <xmqqfv8gg9bp.fsf@gitster.dls.corp.google.com>
In-Reply-To: <1428097515.31333.2.camel@ubuntu>

David Turner <dturner@twopensource.com> writes:

> Why is it impossible to free struct lock_files?  I understand that they
> become part of a linked list, and that there's an atexit handler that
> goes over that list.  But couldn't we just remove them from the linked
> list and then free them? 

I suspect that the code is worried about getting a signal, while it
is manipulating the linked list, and then cause the atexit handler
to walk a list that is in a broken state.