H5Tconvert thread-related issue

Hdf-forum archives
1

Hey again - I was getting some strange segfaults when calling
H5Tconvert to go from unpacked to packed compound types (packed with
H5Tcopy + H5Tpack, while dealing with previously reported bug) in
another posix thread from where the H5 types were created/initalized.
The routines were crashing in H5TS_get_thread_local_value (rather
pthread_getspecific) - in H5TS_cancel_count_dec. Is this expected?
Is it not safe to use types allocated in the main thread in a slave
thread and does that make any sense if so? Is there any way to work
around the issue?

Thanks,
-Jason

2

Hi Jason,

Can you give us an example program that we can use to reproduce this issue?
Please send it to the HDF Helpdesk.

Thanks!
-Barbara

ยทยทยท

========================================================
Barbara Jones, The HDF Group Helpdesk, help@hdfgroup.org
Support Services: https://www.hdfgroup.org/support/

-----Original Message-----
From: Hdf-forum [mailto:hdf-forum-bounces@lists.hdfgroup.org] On Behalf Of Jason Newton
Sent: Saturday, January 28, 2017 11:53 PM
To: hdf-forum
Subject: [Hdf-forum] H5Tconvert thread-related issue

Hey again - I was getting some strange segfaults when calling H5Tconvert to go from unpacked to packed compound types (packed with H5Tcopy + H5Tpack, while dealing with previously reported bug) in another posix thread from where the H5 types were created/initalized.
The routines were crashing in H5TS_get_thread_local_value (rather
pthread_getspecific) - in H5TS_cancel_count_dec. Is this expected?
Is it not safe to use types allocated in the main thread in a slave thread and does that make any sense if so? Is there any way to work around the issue?

Thanks,
-Jason

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