Added 3 new functions to support this: H5TSset_internal_threads(), H5Pset_io_threads(), and H5Pget_io_threads().
This feature internally parallelizes read operations on chunked datasets. H5TSset_internal_threads() is used to enable the feature globally, while H5Pset_io_threads() can be used to disable the feature on a per-operation basis. These functions are only available when the library is configured with HDF5_ENABLE_CONCURRENCY=ON. When performing an internally threaded read, the library will concurrently read from disk, unfilter, and scatter to memory all chunks in a read operation on a chunked dataset. Currently each of these sub-operations is serialized (protected by a mutex), so there is not yet likely to be any performance improvement.
Neil Fortner
1d946c7028
