Re: file changes content but ContentModificationDate not changing
Re: file changes content but ContentModificationDate not changing
- Subject: Re: file changes content but ContentModificationDate not changing
- From: "Gerriet M. Denkmann" <email@hidden>
- Date: Fri, 07 Nov 2014 08:33:59 +0700
> On 7 Nov 2014, at 05:38, James C <email@hidden> wrote:
>
> If, as Quinn suggests, you are experiencing a problem related to flush
> delay, then I wonder what adding an msync() would do. In the 10.6.8
> manpages, file modification time is mentioned.
adding msync() creates a DISPATCH_VNODE_WRITE notification.
Kind regards,
Gerriet.
>
> On 11/7/14, email@hidden
> <email@hidden> wrote:
> <snip>
>> Date: Thu, 06 Nov 2014 11:20:26 +0700
>> From: "Gerriet M. Denkmann" <email@hidden>
>> To: Quinn The Eskimo! <email@hidden>
>> Cc: "email@hidden Kernel"
>> <email@hidden>
>> Subject: Re: file changes content but ContentModificationDate not
>> changing
>> Message-ID: <email@hidden>
>> Content-Type: text/plain; charset=us-ascii
>>
> <snip>
>> else // stealth-mode > {
>> // will receive no DISPATCH_VNODE_XXX at all
>> // does NOT update the change-time of stats_drift_file
>> NSLog(@"%s will write %g (case 3: stealth-mode using mmap)",__FUNCTION__,
>> drift_comp * 1e6);
>> off_t n = snprintf(mmap_addr, pageSize, "%.3f\n", drift_comp * 1e6);
>> if (n != stats_size) // size of ntp.drift changed
>> {
>> truncate(stats_drift_file, n);
>> stats_size = n;
>> };
>> };
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