[Webkit-unassigned] [Bug 107625] Coordinated Graphics : Reduce the number of messages sent to UIProcess when creating and deleting compositing layers.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=107625


Seulgi Kim <seulgikim at company100.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|WONTFIX                     |




--- Comment #8 from Seulgi Kim <seulgikim at company100.net>  2013-01-23 00:23:42 PST ---
On second thoughts, this patch has enough values.
Less messages improve performance not only just for IPC time, but also CoreIPC creates Functional before sending a message.

bool Connection::sendMessage(MessageID messageID, PassOwnPtr<MessageEncoder> encoder, unsigned messageSendFlags)
{
/ ...... /
    m_connectionQueue.dispatch(WTF::bind(&Connection::sendOutgoingMessages, this));
/ ...... /
}

And CoordinatedLayerTreeHostProxy also creates Functional to create or delete layers.

If CoordinatedLayerTreeHost send n messages in a cycle, CoreIPC and CoordinatedLayerTreeHostProxy creates 2 * n functional. And this patch reduced 2 * n Functionals to 2 Functional.
IMHO it will not be an insignificant performance improve.

And also it doesn't harms to readability.

Could you think again, noam?

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