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Basic support for non-POSIX backends #25

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Basic support for non-POSIX backends #25

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Commits on Sep 19, 2014

  1. refactor access to the backend 

    For "non-traditional" backends that expose a different namespace than that
directly accessible by straight POSIX calls, the access() call shouldn't be
directly used by the benchmark. POSIX calls can still occur as a result in the
current iteration of the code (e.g., uniqueDir option resulting in calling
mkdir), but for the moment I assume that backends will exit if an incompatible
option is selected.
    John Jenkins committed Sep 19, 2014
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  2. init/finalize support 

    Non-POSIX systems may need special initialization/finalization code to e.g.,
set up network contexts, ping servers for storage system view, etc.
    John Jenkins committed Sep 19, 2014
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  3. put mkdir into the backend 

    The notion of a "directory" may not be valid with a non-POSIX namespace (e.g.,
an object store), so put the mkdir down a level. Ideally, creating directories
should be relegated to the *_init functions so that the logic is not happening
at the "top-level" (PrependDir), but that's a little too much code churn for
now, so going with the easier option. Backends without a notion of directories
should simply spit out a warning or error.
    John Jenkins committed Sep 19, 2014
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  4. removed POSIX_Init and POSIX_Finalize 

    if init/fini are going to be no-ops, have explicit no-op support
    John Jenkins committed Sep 19, 2014
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