[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.6-313-g8cc3cc3

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- Log -----------------------------------------------------------------
commit 8cc3cc330cabadc75714ace155c03ac74ea7ea92
Author: Josh Stone <jistone@redhat.com>
Date:   Thu Oct 13 15:55:24 2011 -0700

    Tweak cache logic to group removals by hash value
    
    We used to glob the cache for *.ko, *.so, *.h, and *.log, implicitly
    assuming that this was all that was cached.  For the .ko case we also
    grouped .c and .sgn to be removed all together.  But when any new
    extension came along, the cache cleanup ignored it.
    
    Now we glob instead for any file in the cache that looks like is has a
    hashed name, and we group removals for all files that appear to have the
    same hash value, regardless of prefix or suffix.  This will hopefully
    make us more robust against future file-caching changes.
    
    * cache.cxx (cache_ent_info): Becomes a vector of paths, with no
      knowledge needed for modules.  Use better types for size and mtime.
      (clean_cache): Use a new glob that looks for hash-like files, with 32
      hex digits in a row.  Use a regex to find common HASH_LEN substrings
      in all those filenames.  Build the cache_ent_info groups by HASH_LEN,
      and proceed to delete old entries until below quota.

-----------------------------------------------------------------------

Summary of changes:
 cache.cxx |  223 +++++++++++++++++++++++++------------------------------------
 1 files changed, 90 insertions(+), 133 deletions(-)


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