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Re: how do exit and _exit affect mmapped memory?
- From: Godmar Back <godmar at gmail dot com>
- To: Dmitry Goncharov <dgoncharov at users dot sf dot net>
- Cc: libc-help at sourceware dot org
- Date: Sun, 9 Sep 2012 00:32:37 -0400
- Subject: Re: how do exit and _exit affect mmapped memory?
- References: <20120909031203.GC10479@madrid>
It'll be saved in all cases, no matter what the process does or how it exits.
- Godmar
On Sat, Sep 8, 2012 at 11:12 PM, Dmitry Goncharov
<dgoncharov@users.sf.net> wrote:
>
> Good morning,
>
> A program uses glibc on linux. The program uses mmap with flag MAP_SHARED.
> The program never calls munmap or msync.
> Is there a guarantee that the contents of the mapped memory will be stored to
> the file when the program calls exit?
> Is there such a guarantee if the program calls _exit or is killed by a signal?
> Does calling munmap give such a guarantee?
> Thanks.
>
> regards, Dmitry
>