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List: webkit-dev
Subject: Re: [webkit-dev] Single-threaded database/storage solution
From: George Staikos <staikos () kde ! org>
Date: 2009-08-18 19:35:58
Message-ID: 0EAA16F5-6B04-4592-81B0-6FA0868B8588 () kde ! org
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On 18-Aug-09, at 1:44 PM, Yong Li wrote:
> Hi, All,
>
> The current webkit database/storage is implemented with creating
> new threads. But not all platform/products support mulple-
> threading. Also, threading can be expensive on some platforms.
> Except this database/storage implementation, WEBKIT platform-
> crossing code can build and run in a single thread. WEBKIT
> generally uses WebCore::Timer To avoid blocking UI. Another way to
> avoid blocking UI is to create a separate thread for UI, and WEBKIT
> code can still run in a single-thread. Now it's broken by database/
> storage code, which forces to use multiple threads for WEBKIT. In
> our WINCE port, we have implemented a single-threaded solution with
> WebCore::Timer. The patch has been post to https://bugs.webkit.org/
> show_bug.cgi?id=28019 . The patch is a bit out-of-date, due to
> changes in upstream. New patch will come soon. Please give some
> comments if you're interested.
>
> There's a macro ENABLE_JSC_MULTIPLE_THREADS used in JSC. Probably
> there should also be a macro ENABLE_WEBCORE_MULTIPLE_THREADS. Or
> just use ENABLE_MULTIPLE_THREADS for all multi-threading code.
I agree with that and I think a cleanup of the patch would make it
a good addition. Forcing the use of threads here is not ideal.
--
George Staikos
Torch Mobile Inc.
http://www.torchmobile.com/
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