Context: Some file systems require a prefix in the path.
The POSIX 'access' call fails and consequently files are
never deleted.
This patch implements an access function in the MPIIO
backend using MPI_File_open. Prefixes can now be parsed
by ROMIO.
IOR was leaking a hint structure in MPI-IO case, two groups in
common code, and when we get the info member from the file we were
losing our reference to the hints we just passed in.
This provides an HDFS back-end, allowing IOR to exercise a Hadoop
Distributed File-System, plus corresponding changes throughout, to
integrate the new module into the build. The commit compiles at LANL, but
hasn't been run yet. We're currently waiting for some configuration on
machines that will eventually provide HDFS. By default, configure ignores
the HDFS module. You have to explicitly add --with-hdfs.
Clean up the header files to only contain those things that
need to be shared between .c files.
Functions that are not shared are now declared static to
make their file scope explicit. Functions that ARE shared
are declared in appropriate headers.
I am not going to claim that I caugh everything, but at
least it is a good start.
Jean-Yves VET