I don't understand why the change from while() { .. } to do { .. }
while(..) was
needed in GIFImageReader but then I don't see any harm in it either.
Can you explain that one ?
Also I'd like Brian to sign off on the TIFF change.
Other than that all seems fine.
-phil.
On 8/31/16, 5:37 AM, Sergey Bylokhov wrote:
On 31.08.16 14:48, Jayathirth D V wrote:
Hi Sergey,
In case of JPEG whole read process is under a ThreadLock.
public BufferedImage read(int imageIndex, ImageReadParam param)
throws IOException {
setThreadLock();
try {
cbLock.check();
try {
readInternal(imageIndex, param, false);
Then the fix looks fine.
By others processXXX() do you mean processXXX() in other plugins or
processXXX() in case of JPEG?
Please clarify.
I meant only the code related to jpeg.
Thanks,
Jay
-----Original Message-----
From: Sergey Bylokhov
Sent: Wednesday, August 31, 2016 4:22 PM
To: Jayathirth D V; Philip Race
Cc: 2d-dev
Subject: Re: [OpenJDK 2D-Dev] [9] RFR JDK-4924727 : reader.abort()
method does not work when called inside imageStarted for PNG
I have only one question: should we call the new
clearNativeReadAbortFlag(and probably the others processXXX()) under
the ThreadLock?
On 31.08.16 13:07, Jayathirth D V wrote:
Hi Sergey,
Thanks for the clarification.
I have updated the test case to use Files.delete().
Please find updated webrev for review:
http://cr.openjdk.java.net/~jdv/4924727/webrev.02/
Regards,
Jay
-----Original Message-----
From: Sergey Bylokhov
Sent: Monday, August 29, 2016 8:52 PM
To: Jayathirth D V
Cc: 2d-dev
Subject: Re: [OpenJDK 2D-Dev] [9] RFR JDK-4924727 : reader.abort()
method does not work when called inside imageStarted for PNG
On 29.08.16 18:07, Jayathirth D V wrote:
Hi Sergey,
I am not getting the usage of Files.delete() from its
specification. Can you please elaborate what special case it will
handle in my test case?
I am creating temporary file separately for all the readers and
deleting them.
Files.delete() will throw an exception if the file cannot be
deleted, and File.delete() will return false in such case.
Also I am closing the ImageInputStream associated after read operation.
But plugin itself can leak some streams and lock a temporary file, so
Files.delete() will catch this.
-----Original Message-----
From: Sergey Bylokhov
Sent: Monday, August 29, 2016 8:25 PM
To: Jayathirth D V; Philip Race
Cc: Prasanta Sadhukhan; 2d-dev
Subject: Re: [OpenJDK 2D-Dev] [9] RFR JDK-4924727 : reader.abort()
method does not work when called inside imageStarted for PNG
Hi, Jay.
Please delete the temporary file via Files.delete(), which will
throw an exception if the file is locked by some reader.
On 29.08.16 11:42, Jayathirth D V wrote:
Hi Phil & Sergey,
Thanks for your inputs.
I have verified reader.abort() request for IIOReadProgressListener
for all available plugins.
Apart from PNG although all readers were able to abort read when
we call reader.abort() from IIOReadProgressListener callbacks,
they were not calling processReadAborted() right after
IIOReadProgressListener callbacks. So I have made changes for the
same.
And in some readers before every read call they were not calling
clearAbortRequest(), which is important because if we use same
reader for another read() call it will be invalid unless we clear
previous abort request.
In case of JPEG since we are using native IJG library we need to
update abortFlag present in imageioJPEG.c before every call as we
are doing for other readers using clearAbortRequest().
Since this has native and make changes I have verified changes
through JPRT also which is successfully building on all platforms
(http://scaaa637.us.oracle.com//archive/2016/08/2016-08-29-065104.jay.
client_commit//JobStatus.txt )
Please find updated webrev for review:
http://cr.openjdk.java.net/~jdv/4924727/webrev.01/
I noticed that in case on WBMP I was not getting ImageReader
object to call setInput() in test case to verify the behavior of
reader.abort(). So I have created separate bug for the same
(https://bugs.openjdk.java.net/browse/JDK-8164930 ). And in case
of WBMP we already have clearAbortRequest() call and also we are
returning from IIOReadProgressListener callbacks properly, only
thing here is we are not returning right after callbacks as we
have updated other plugins.
I want to verify writer plugins in separate bug as we already have
lot of changes in this bug. So I have created
https://bugs.openjdk.java.net/browse/JDK-8164931 and will be
working on this bug.
Thanks,
Jay
-----Original Message-----
From: Phil Race
Sent: Thursday, August 18, 2016 1:42 AM
To: Sergey Bylokhov
Cc: Jayathirth D V; Prasanta Sadhukhan; 2d-dev
Subject: Re: [OpenJDK 2D-Dev] [9] RFR JDK-4924727 : reader.abort()
method does not work when called inside imageStarted for PNG
I think we can
- get all plugins,and for each
- write a file in that format
- read it back and apply the test
It is also worth verifying that the writer abort checks are in
sync with the reader aborts, ie happen at such equivalent points
as might exist.
-phil.
On 08/15/2016 11:30 AM, Sergey Bylokhov wrote:
Is it possible to unify the test for all our plugins? I assume they
should work in the same way. I am not sure but probably the image
can be generated at runtime?
On 11.08.16 21:59, Jayathirth D V wrote:
Hi,
Please review the following fix in JDK9 at your convenience:
Bug : https://bugs.openjdk.java.net/browse/JDK-4924727
Webrev : http://cr.openjdk.java.net/~jdv/4924727/webrev.00/
Issue : When we issue ImageReader.abort() in
IIOReadProgressListener.imageStarted(), reading is not aborted and
it is continued.
Root cause : After IIOReadProgressListener.imageStarted() call in
PNGImageReader.java when we enter decodeImage() we call
clearAbortRequest() which will clear the abort request from
IIOReadProgressListener.imageStarted().
Solution : clearAbortRequest() documentation mentions that it
should be called before reading of image starts, so it should be
called before IIOReadProgressListener.imageStarted()(In
PNGImageReader.java it is
processImageStarted(0) in readImage()). So moved
clearAbortRequest() call from decodeImage() to readImage(). Also
we should call
abortRequested() in PNGImageReader.java at places mapping to
IIOReadProgressListener and not randomly at end of functions or at
places related to IIOReadUpdateListener, updated the code for
the same.
Observation not related to this issue : We don't have call similar
to
IIOReadProgressListener.readAborted() in IIOReadUpdateListener,
but user can call ImageReader.abort() from IIOReadUpdateListener
methods.
Is there a need to add similar method in IIOReadUpdateListener?
Any inputs on this also would be helpful.
Thanks,
Jay
--
Best regards, Sergey.
--
Best regards, Sergey.
