Adam,
User documentation for this feature is nearly complete and is currently in
review. Note that the address below is NOT permanent; the docs will be in the
usual place at www.hdfgroup.org/HDF5/doc/ once HDF5 Release 1.8.9 is final.
In the meantime, the docs are TEMPORARILY available here:
Overview:
http://www.hdfgroup.org/HDF5/doc_test/H51.8docs/Advanced/FileImageOperations/HDF5FileImageOperations.pdf
Reference manual entries:
The relevant reference manual entries are all cross-referenced from "See Also"
in the H5PFget_file_image entry:
http://www.hdfgroup.org/HDF5/doc_test/H51.8docs/RM/RM_H5F.html#File-GetFileImage
Note that there is one high-level function that may suit your needs,
H5LTopen_file_iamge. Several low-level H5F and H5P functions are provided for
situations requiring more customization.
Please let me know if you experience any difficulty with these documents.
Thanks!
-- Frank
HDF Documentation Team
[email protected]
On 24 Apr 2012, at 15:38 PM, Adam Wierzchowski wrote:
> Excellent. Where can I find more information on this. I don't see anything
> like that in hdf5-1.8.9-pre1-RELEASE.txt.
>
> regards
> Adam
>
> On 2012-04-24 22:34, Quincey Koziol wrote:
>> Hi Mark/Adam,
>> The "file image" feature is available in the upcoming 1.8.9 release,
>> which has a prerelease candidate available here:
>>
>> http://www.hdfgroup.uiuc.edu/ftp/pub/outgoing/hdf5/hdf5-1.8.9-pre1/
>>
>> Quincey
>>
>> On Apr 24, 2012, at 2:53 PM, Mark Miller wrote:
>>
>>> Ah, that capability also exists but not in a currently released version
>>> of HDF5. I think it is available in HDF5-1.9 series. Maybe someone from
>>> HDF Group could point you in the right direction. Also, have a looksee
>>> here...
>>>
>>> https://visitbugs.ornl.gov/attachments/66/load_core_file_driver_from_image_RFC_v04.pdf
>>>
>>> Hopefully, Quincy Koziol might be able point you to actual HDF5 version
>>> tarball supporting this.
>>>
>>> Mark
>>>
>>> On Tue, 2012-04-24 at 12:45 -0700, Adam Wierzchowski wrote:
>>>> Hi,
>>>> thank you. Exactly what I needed. But what about reading these data. I
>>>> need something like:
>>>> H5Fcreate...
>>>> H5InitializeWithRawBytesFromMemory(void* dataPointer, int
>>>> dataLengthInBytes)
>>>>
>>>> regards
>>>> Adam
>>>>
>>>> MM> If I am understanding you correctly, you can do that using the 'core'
>>>> MM> virtual file driver (VFD). Have a look at...
>>>>
>>>> MM> http://www.hdfgroup.org/HDF5/doc/RM/RM_H5P.html#Property-SetFaplCore
>>>>
>>>> MM> You need to create a file-access or file-creation properties list
>>>> object
>>>> MM> with appropriate values set for the core VFD and it should behave as
>>>> you
>>>> MM> describe.
>>>>
>>>> MM> Good luck.
>>>>
>>>> MM> Mark
>>>>
>>>> MM> On Tue, 2012-04-24 at 06:55 -0700, Adam Wierzchowski wrote:
>>>>>> Hi,
>>>>>> I have my custom format where I keep all kinds of data: strings, arrays
>>>>>> etc. I'd also like to keep chunk of data which is basically whole hdf
>>>>>> file. Is it possible?
>>>>>> Idea is to keep hdf5 file in memory and dump all that data to my file.
>>>>>> When reading just read all that data to memory and read from it with
>>>>>> hdf5 functions. Problem is that haven't found functions which will allow
>>>>>> me to do that in hdf5 docs.
>>>>>>
>>>>>> hope you can help me
>>>>>> regards
>>>>>> Adam
>>>>>>
>>>>>> _______________________________________________
>>>>>> Hdf-forum is for HDF software users discussion.
>>>>>> [email protected]
>>>>>> http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
>>>>
>>>>
>>>> _______________________________________________
>>>> Hdf-forum is for HDF software users discussion.
>>>> [email protected]
>>>> http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
>>> --
>>> Mark C. Miller, Lawrence Livermore National Laboratory
>>> ================!!LLNL BUSINESS ONLY!!================
>>> [email protected] urgent: [email protected]
>>> T:8-6 (925)-423-5901 M/W/Th:7-12,2-7 (530)-753-8511
>>>
>>>
>>> _______________________________________________
>>> Hdf-forum is for HDF software users discussion.
>>> [email protected]
>>> http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
>>
>
>
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> [email protected]
> http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
_______________________________________________
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