Thank you Prasanta for the review.
Thanks and regards,
Shashi
*From:*Prasanta Sadhukhan
*Sent:* Friday, June 22, 2018 1:42 PM
*To:* Shashidhara Veerabhadraiah
<shashidhara.veerabhadra...@oracle.com>; Philip Race
<philip.r...@oracle.com>; 2d-dev <2d-dev@openjdk.java.net>
*Subject:* Re: [OpenJDK 2D-Dev] <Swing Dev> [11] JDK-8153732: Windows
remote printer changes do not reflect in lookupPrintServices()
looks good. One more thing, you could probably use
if (info4->Attributes & PRINTER_ATTRIBUTE_NETWORK) {
instead of hardcoding
if (info4->Attributes & 0x00000010) {
Also,
getAllPrinterNames() shares more than 80% code with your recently addedGetRemotePrintersNames(). Probably we could optimise
getAllPrinterNames to use yours
by having a parameter(all/remote) but it's upto you.
Regards
Prasanta
On 6/22/2018 12:53 PM, Shashidhara Veerabhadraiah wrote:
Hi Prasanta, Thank you for the review. Here is the new Webrev:
http://cr.openjdk.java.net/~sveerabhadra/8153732/webrev.05/
<http://cr.openjdk.java.net/%7Esveerabhadra/8153732/webrev.05/>
For the EnumPrinters case, I think the cReturned is sufficient as
it is set to zero every time we start.
Thanks and regards,
Shashi
*From:*Prasanta Sadhukhan
*Sent:* Friday, June 22, 2018 10:41 AM
*To:* Shashidhara Veerabhadraiah
<shashidhara.veerabhadra...@oracle.com>
<mailto:shashidhara.veerabhadra...@oracle.com>; Philip Race
<philip.r...@oracle.com> <mailto:philip.r...@oracle.com>; 2d-dev
<2d-dev@openjdk.java.net> <mailto:2d-dev@openjdk.java.net>
*Subject:* Re: [OpenJDK 2D-Dev] <Swing Dev> [11] JDK-8153732:
Windows remote printer changes do not reflect in lookupPrintServices()
I guess
if (pollStr.equalsIgnoreCase("true")) {
70 pollServices = true;
71 } else if (pollStr.equalsIgnoreCase("false")) {
72 pollServices = false;
73 }
can be written as
if (pollStr.equalsIgnoreCase("false"))
pollServices = false;
as it is already defaulted to true.
78 * for polling PrintServices. The default is 120.
I guess default is 240.
also, EnumPrinters returns bool, which we should check like
263 if (cReturned > 0 && enumprintersret !=0 ) {
Regards
Prasanta
On 6/22/2018 10:03 AM, Shashidhara Veerabhadraiah wrote:
Hi Phil, Thanks for your review.
I have made your suggested changes and here is the updated webrev:
http://cr.openjdk.java.net/~sveerabhadra/8153732/webrev.04/
<http://cr.openjdk.java.net/%7Esveerabhadra/8153732/webrev.04/>
Need one more review to commit this.
Note: A network printer can be added via the ‘Add a printer’
under the ‘Devices and Printers’ dialog. A network printer
will have the property ‘Device description’ set to ‘Network
printer connection’.
Thanks and regards,
Shashi
*From:*Phil Race
*Sent:* Friday, June 22, 2018 2:16 AM
*To:* Shashidhara Veerabhadraiah
<shashidhara.veerabhadra...@oracle.com>
<mailto:shashidhara.veerabhadra...@oracle.com>; 2d-dev
<2d-dev@openjdk.java.net> <mailto:2d-dev@openjdk.java.net>
*Subject:* Re: <Swing Dev> [11] JDK-8153732: Windows remote
printer changes do not reflect in lookupPrintServices()
I thought you were going to make the refresh time 4 minutes ?
I don't see that it has to be the same on Windows as it was on
Unix,
if you say 4 minutes is a sensible value there .. and 4 mins
will be
less CPU wake up, so I'd back that (4 mins) ahead of 2 minutes
as the default here.
You still have missing white space
432 while(true) {
With these two changes you have my +1 ..
BTW the native diff looks MUCH better now - thanks !
-phil.
On 06/21/2018 01:33 PM, Shashidhara Veerabhadraiah wrote:
Hi Phil, Here is the new Webrev for changes you suggested.
http://cr.openjdk.java.net/~sveerabhadra/8153732/webrev.03/
<http://cr.openjdk.java.net/%7Esveerabhadra/8153732/webrev.03/>
Thanks and regards,
Shashi
*From:*Phil Race
*Sent:* Friday, June 22, 2018 1:02 AM
*To:* Shashidhara Veerabhadraiah
<shashidhara.veerabhadra...@oracle.com>
<mailto:shashidhara.veerabhadra...@oracle.com>; 2d-dev
<2d-dev@openjdk.java.net> <mailto:2d-dev@openjdk.java.net>
*Subject:* Re: <Swing Dev> [11] JDK-8153732: Windows
remote printer changes do not reflect in lookupPrintServices()
+ private static final long DELAY = 1000 * 60 * 4;
// 4 min pooling
I think we need a System Property that can control this.
I suggest the name "sun.java2d.print.minRefreshTime" which
is what we use on Unix.
and similarly to there we should have
"sun.java2d.print.polling" which is a boolean
and controls whether we do this at all ..
See
src/java.desktop/unix/classes/sun/print/PrintServiceLookupProvider.java
Lots of places where you are missing a space before "("
+ if(str1.length != str2.length) {
+ for(int i = 0;i < str1.length;i++) {
+ for(int j = 0;j < str2.length;j++) {
+ if(!str1[i].equals(str2[j])) {
+ while(true) {
+ if(doCompare(prevRemotePrinters,
currentRemotePrinters)) {
There's some of that in native too
266 if(info4->Attributes & 0x00000010) {
In
http://cr.openjdk.java.net/~sveerabhadra/8153732/webrev.01/src/java.desktop/windows/native/libawt/windows/WPrinterJob.cpp.sdiff.html
<http://cr.openjdk.java.net/%7Esveerabhadra/8153732/webrev.01/src/java.desktop/windows/native/libawt/windows/WPrinterJob.cpp.sdiff.html>
you seem to have moved all the existing and (I think)
unchanged related functions so the DIFF appears
much bigger than it really is. Please move them back and
re-generate.
The test really needs to provide an "out" for someone
running the test who has no way
to add a network printer .. they don't want to have to
fail the test.
As well as that, arguably this should be an @ignore test,
so it is not run unless
you are trying to run all the tests.
-phil.
On 06/21/2018 12:08 PM, Shashidhara Veerabhadraiah wrote:
Hi Phil, Here is the new Webrev. I chose 4 mins
because I think it takes around 2 mins to add a new
network printer, hence I felt 4 mins is a good time.
The windows **PrinterChangeNotifications** calls are a
blocking function calls hence I could not add the
remote printers monitor to the existing thread. Hence
there is a new thread being added to listen to remote
printers status changes.
http://cr.openjdk.java.net/~sveerabhadra/8153732/webrev.01/
<http://cr.openjdk.java.net/%7Esveerabhadra/8153732/webrev.01/>
Thanks and regards,
Shashi
*From:*Philip Race
*Sent:* Thursday, June 21, 2018 5:38 AM
*To:* 2d-dev <2d-dev@openjdk.java.net>
<mailto:2d-dev@openjdk.java.net>; Shashidhara
Veerabhadraiah <shashidhara.veerabhadra...@oracle.com>
<mailto:shashidhara.veerabhadra...@oracle.com>
*Subject:* Fwd: Re: <Swing Dev> [11] JDK-8153732:
Windows remote printer changes do not reflect in
lookupPrintServices()
The main concern I have is we now have a busy thread
burning CPU ..
bad for laptops .. and if we add a delay we have less
prompt notification
of a new local printer.
I think the compromise is that the existing thread
maybe kept as is,
and we add a new thread that pools every 10 minutes
for a remote printer.
If we can make the existing thread wake up from its
wait and do that, even better.
-phil.
-------- Original Message --------
*Subject: *
Re: [11] JDK-8153732: Windows remote printer changes
do not reflect in lookupPrintServices()
*Date: *
Wed, 20 Jun 2018 17:03:56 -0700
*From: *
Philip Race <philip.r...@oracle.com>
<mailto:philip.r...@oracle.com>
*Organization: *
Oracle Corporation
*To: *
Shashidhara Veerabhadraiah
<shashidhara.veerabhadra...@oracle.com>
<mailto:shashidhara.veerabhadra...@oracle.com>
*CC: *
awt-...@openjdk.java.net
<mailto:awt-...@openjdk.java.net>,
swing-...@openjdk.java.net
<mailto:swing-...@openjdk.java.net>
This is on the wrong lists. Not Swing. Not AWT. Should
be 2d.
I'll forward it there and continue there. Consider the
AWT+Swing threads dead.
-phil.
On 6/20/18, 3:12 AM, Shashidhara Veerabhadraiah wrote:
Hi All, Please review this code changes for the
below enhancement.
Enhancement:
https://bugs.openjdk.java.net/browse/JDK-8153732
Webrev:
http://cr.openjdk.java.net/~sveerabhadra/8153732/webrev.00/
<http://cr.openjdk.java.net/%7Esveerabhadra/8153732/webrev.00/>
Details of the changes: Windows provides
*PrinterChangeNotification* functions that
provides information about printer status changes
of the local printers(subset) but not network
printers.
Alternatively, Windows provides a way thro' which
one can get the network printer status changes by
using WMI, RegistryKeyChange combination, which is
a slightly complex mechanism.
The Windows WMI offers an async and sync method to
read thro' registry via the WQL query. The async
method is considered dangerous as it leaves open a
channel until we close it. But the async method
has the advantage of being notified of a change in
registry by calling callback without polling for
it. The sync method uses the polling mechanism to
notify.
RegistryValueChange cannot be used in combination
with WMI to get registry value change notification
because of an error that may be generated because
the scope of the query would be too big to
handle(at times).
Hence an alternative mechanism is choosen via the
EnumPrinters by polling for the count of printer
status changes(add\remove) and based on it update
the printers list(both local and remote printers -
superset).
Thanks and regards,
Shashi
