Török Edvin a7cf187a0c Make cl_load thread safe (bb #2333). ...

Parallel cl_load() crash (bb #2333).
Reason is twofold:
 - cache.c had 2 'static' global variables, thus trying to initialize same cache
 from multiple threads
  - bytecode2llvm.cpp: something in LLVM 2.7 is crashing when loading in
  parallel

Fix is to drop the 'static' on the variable (cache is per engine already).
This also fixes a potential memory leak in clamd!

The other part of the fix is to turn on the mutex around bytecode compilation
always. We don't call cl_load in parallel, so this doesn't affect clamd, but
some may need to call cl_load in parallel.

2010-11-04 21:53:03 +02:00

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