Hi Quincey,
Quincey Koziol wrote:
On May 27, 2011, at 1:30 PM, Mathias Wilhelm wrote:
I just ran into the problem, that my c++ HDF5 application has to be thread
safe. I stumbled across a post 2 years ago[0], which desribes that
--enable-threadsafe _and_ --enable-cxx does not work together.
I guess this is still up to date, since the configuration aborts with the configuration
error "incompatible flags".
Any suggestions?
We don't test that configuration (because we don't have any demand from
organizations that fund our company), so it might work without any problem, but we're not
sure. If you'd like to give it a try, you can use the "--enable-unsupported"
configure flag and see if things are working for you.
To make a long story short:
Using --enable-unsupported works under linux and windows 7 or higher.
But:
My application has to operate under Windows XP. So I "replaced" the
InitOnceExecuteOnce() call with boost::call_once. My test case of
writing and reading multiple HDF5 files passes without any problems, so
I anticipate that the application is thread safe, but shows a strange
behavior if only H5::H5File::isHdf5() is called:
If the application invokes H5::H5File::isHdf5() and terminates right
after it, HDF5 reports a "infinite loop closing library"[0].
If the application invokes H5::H5File::isHdf5() and opens the file for
read/write access, the application completes without any errors. The
same if H5::H5File::isHdf5() is not invoked at all. boost::call_once is
invoked in all three cases. However, the error only occurs under windows
so I guess it is because of my hack.
In order to fix this:
Can anyone guess what the problem is?
I can not see a reason why the application terminates with this error
after invoking isHdf5 without any further operations.
What does the sequence of letters mean and if it is not important, can I
suppress this warning?
~Mathias
[0] D,T,F,FD,P,FD,P,FD,P,E,E,E,E,E,E,.....
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