[ITK] [ITK-users] bug in imageIOFactory

[Matt McCormick]

Hi Scott,

According to this [1] entry in the HDF5 FAQ, to get a thread-safe
version on Windows, a new version is required with the referenced
CMake option enabled.  If this is done with ITK_USE_SYSTEM_HDF5
enabled, does it fix the crash?

Thanks,
Matt

[1] http://www.hdfgroup.org/hdf5-quest.html#tsafe

On Wed, May 21, 2014 at 4:40 PM, Scott Pfeifer <scottfivefour at gmail.com> wrote:
> the mutex is commented out, the starting_barrier ensures that all threads
> start the read at about the same time.  If you uncomment the mutex
> everything works as expected.
>
>
>
> On Wed, May 21, 2014 at 2:32 PM, Jim Miller <millerjv at gmail.com> wrote:
>>
>> A bit odd. Note quite sure from your example why you need the barrier or
>> the mutex.
>>
>> But since you are using a mutex, it would seem to me that only on
>> ImageFileReader is executing at a time. As such, I wouldn't have expected
>> any interactions between the ImageIO objects.
>>
>> Jim
>>
>> On May 21, 2014, at 3:46 PM, Scott Pfeifer <scottfivefour at gmail.com>
>> wrote:
>>
>> Hi all,
>>  I have found what seems to be a bug in IOFactory which seems to be a
>> threading issue.  I do not have a fix for it but I have a small program
>> which reproduces the issue.  I will attach the files.
>>
>> The fix I have for the situation is to either put a mutex around all
>> itkIamgeFileReader::Update()'s of assign the ioObject if I already know what
>> sort of image I am dealing with.
>> You will have to change the file names to some mhd files you have, if you
>> need me to provide some I can do that.
>>
>> to make the problem go away here just uncomment line 24 or 32 in
>> ItkTestThreadSupport.cpp
>>
>> I am running Itk 4.5.2 and boost 1.55
>>
>> If I can be of any assistance I would be happy to hel p- my stack trace
>> looks like this
>>
>>
>>
>> H5MM_xfree()
>> H5E_preintf_stack()
>> H5E_clear_starck()
>> isHdf5()
>> HDF5ImageIO::CanReadFile()
>> ImageIOFactory::CreateImageIO()>::GeneraterOutputInformation() line 116
>> ImageFileReader<itk::image<short,3> itkDefaultConvertPixelTrats<short>
>> ProcessObject::UpdateOutputInformation()
>> ImageBase<3>::UpdateOutputInformation()
>> DataObject::Update()
>> ProcessObject::update()
>>
>> <itkLoadTestMain.cpp>
>>
>> <ItkTestThreadSupport.cpp>
>>
>> <ItkTestThreadSupport.h>
>>
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>
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