Re: Avoid spamming the external differ

"kaczoroj" <[email protected]> Tue, 12 Dec 2006 02:33:40 -0000
Newsgroups gmane.comp.version-control.cvs.gui.devel
Message-ID <[email protected]> 
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Kirill,

I think we should not have to worry about the crashes in another=20
application like diff tools - these should be able to launch as fast=20
as possible and if crash occurs the respective authors should take=20
care of that. Please don't implement any complex code for that.=20

However, we could have a limit above which user will be prompted=20
before starting the diff invokations. So if WinCvs will have to diff=20
more that a specified limit number of files it will ask before=20
calling the diff. I have such a feature in CvsIn actually. I think we=20
can set the initial limit at 20. This would apply to any diff - even=20
selected from the file view. There would only be one prompt message=20
box at the beginning.

Best Regards,
Jerzy

--- In [email protected], "kirillmueller" <mail@...> wrote:
>
> Hi,
>=20
> with the new "bulk checkout" feature for cvs diff with the external
> differ, there is a problem when too many different files (say, 100)
> are found. The differs I've tested (Araxis Merge and WinMerge)
> eventually crash. I feel that the problem is not the number of=20
files,
> but the frequency of invocations, especially when all pairs of files
> are sent to the same instance of the external differ. In version=20
2.4,
> WinMerge achieves this through checking whether there's another
> instance of WinMerge running, and communicating with the other
> instance through some protocol, presumably DDE. Araxis Merge has its
> own launcher that communicates with the application through COM.
>=20
> Sleeping between invocations doesn't help much, at least not with
> Araxis Merge. I've tested timeouts of as much as one second, which
> would unneccessarily slow down diffing in most cases.
>=20
> I would like to offer several options for discussion.
>=20
> 1. Pop up a message box every 10 files. (We could make the number of
> files configurable.) The message box would also offer the=20
opportunity
> to abort in case the user didn't expect so many differences -- p.ex.
> after an ill-formed diff request. (Happened to me several times
 :-) )
> Rather annoying.
>=20
> 2. Implement custom code for WinMerge and Araxis Merge that would
> communicate with the tools directly through DDE or COM and wait
> between invocations. We can still offer the command-line approach=20
for
> other differs. This would work for WinCvs only, though.
>=20
> 3. Implement an option "Wait for external diff to exit", default to
> off. (Or, even better, "Wait for xx seconds for external diff to
> exit", which would handle the WinMerge case as well.) Pretty much
> platform-dependent, too.
>=20
> 4. Use some kind of "basket" or "flag" automatically if the number=20
of
> files reaches some limit. Configurable if necessary. (Outlook 2003=20
and
> Explorer in Windows XP show a message when trying to open more than=20
10
> elements/files at once.)
>=20
> 5. ???
>=20
> Personally, I prefer 2. for performance and 4. for usability :-)
>=20
>=20
> Cheers,
>=20
> Kirill
>



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            <p>Kirill,<br>
<br>
I think we should not have to worry about the crashes in another <br>
application like diff tools - these should be able to launch as fast <br>
as possible and if crash occurs the respective authors should take <br>
care of that. Please don't implement any complex code for that. <br>
<br>
However, we could have a limit above which user will be prompted <br>
before starting the diff invokations. So if WinCvs will have to diff <br>
more that a specified limit number of files it will ask before <br>
calling the diff. I have such a feature in CvsIn actually. I think we <br>
can set the initial limit at 20. This would apply to any diff - even <br>
selected from the file view. There would only be one prompt message <br>
box at the beginning.<br>
<br>
Best Regards,<br>
Jerzy<br>
<br>
--- In <a href="mailto:cvsgui-dev%40yahoogroups.com">cvsgui-dev@yahoogro<wbr>ups.com</a>, &quot;kirillmueller&quot; &lt;mail@...&gt; wrote:<br>
&gt;<br>
&gt; Hi,<br>
&gt; <br>
&gt; with the new &quot;bulk checkout&quot; feature for cvs diff with the external<br>
&gt; differ, there is a problem when too many different files (say, 100)<br>
&gt; are found. The differs I've tested (Araxis Merge and WinMerge)<br>
&gt; eventually crash. I feel that the problem is not the number of <br>
files,<br>
&gt; but the frequency of invocations, especially when all pairs of files<br>
&gt; are sent to the same instance of the external differ. In version <br>
2.4,<br>
&gt; WinMerge achieves this through checking whether there's another<br>
&gt; instance of WinMerge running, and communicating with the other<br>
&gt; instance through some protocol, presumably DDE. Araxis Merge has its<br>
&gt; own launcher that communicates with the application through COM.<br>
&gt; <br>
&gt; Sleeping between invocations doesn't help much, at least not with<br>
&gt; Araxis Merge. I've tested timeouts of as much as one second, which<br>
&gt; would unneccessarily slow down diffing in most cases.<br>
&gt; <br>
&gt; I would like to offer several options for discussion.<br>
&gt; <br>
&gt; 1. Pop up a message box every 10 files. (We could make the number of<br>
&gt; files configurable.<wbr>) The message box would also offer the <br>
opportunity<br>
&gt; to abort in case the user didn't expect so many differences -- p.ex.<br>
&gt; after an ill-formed diff request. (Happened to me several times<br>
 :-) )<br>
&gt; Rather annoying.<br>
&gt; <br>
&gt; 2. Implement custom code for WinMerge and Araxis Merge that would<br>
&gt; communicate with the tools directly through DDE or COM and wait<br>
&gt; between invocations. We can still offer the command-line approach <br>
for<br>
&gt; other differs. This would work for WinCvs only, though.<br>
&gt; <br>
&gt; 3. Implement an option &quot;Wait for external diff to exit&quot;, default to<br>
&gt; off. (Or, even better, &quot;Wait for xx seconds for external diff to<br>
&gt; exit&quot;, which would handle the WinMerge case as well.) Pretty much<br>
&gt; platform-dependent, too.<br>
&gt; <br>
&gt; 4. Use some kind of &quot;basket&quot; or &quot;flag&quot; automatically if the number <br>
of<br>
&gt; files reaches some limit. Configurable if necessary. (Outlook 2003 <br>
and<br>
&gt; Explorer in Windows XP show a message when trying to open more than <br>
10<br>
&gt; elements/files at once.)<br>
&gt; <br>
&gt; 5. ???<br>
&gt; <br>
&gt; Personally, I prefer 2. for performance and 4. for usability :-)<br>
&gt; <br>
&gt; <br>
&gt; Cheers,<br>
&gt; <br>
&gt; Kirill<br>
&gt;<br>
<br>
</p>
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#ygrp-sponsor .ad a:hover{
	text-decoration: underline;
}
#ygrp-sponsor .ad p{
	margin: 0;
}
o {font-size: 0; }
.MsoNormal {
   margin: 0 0 0 0;
}
#ygrp-text tt{
  font-size: 120%;
}
blockquote{margin: 0 0 0 4px;}
.replbq {margin:4}
-->
</style>
</head>
<!--~-|**|PrettyHtmlEnd|**|-~-->
</html><!--End group email -->


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