[haiku-development] Re: Entry rename and queries
- From: Laurent Humbertclaude <laurent.humbertclaude@xxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Mon, 23 Nov 2009 23:24:57 +0100
On Mon, Nov 23, 2009 at 5:58 PM, Ingo Weinhold <ingo_weinhold@xxxxxx> wrote:
>
> On 2009-11-23 at 17:20:15 [+0100], Alexandre Deckner <alex@xxxxxxxxxxxx>
> wrote:
>> Axel Dörfler wrote:
>> >> So there's currently no way to catch such cases in a robust way. What
>> >> can we do about that?
>> >>
>> For example, what is the cost of watching a directory / each node
>> separately?
>
> On a 32 bit machine watching a node (not watched by anyone else) costs 72
> bytes of kernel heap. There's a minimal CPU overhead for checking whether an
> event for a watched node occurred and some overhead for actually sending a
> node monitoring message. Watching a directory's contents is just watching a
> single node for a specific event.
Is there a way to watch for an entire directory and any subdirectory?
Or even for an entire volume, for whatever file or directories ?
If I understand the BeBook correctly, the BVolumeRoster is only for
volume [un]mounting.
Regards,
Laurent
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