[Pymerase-devel] Memory Leak Bug Fix in CVS

[Brandon K. <ki...@ca...>]

I've checked in a major memory leak bug fix into CVS and is available on
http://pymerase.caltech.edu. I've created ten unittests which pass now
after the patch and did some additional tests. I still may need more
testing. If any new bugs are found, please submit a bug report. If
anyone would like more information about how to take advantage of the
new memory saving abilities, please send a message to the mailing lists.
Enjoy! 
 
DETAILS: 
Fixes for bugs 1256258 and 1256271. Memory leak should now be fixed. Ten
test cases have be implemented in tests/TestMemLeak.py... All ten pass
currently. I tested for slow down in creating and commiting 10,000
objects to a database. It has a 0.2 sec slow down in a 94 sec time
frame. The fix includes an object cache which reuses objects which have
already been pulled into memory (using weakrefs). Also, there is a new
function for DBClass objects called _destroySelf. This function must be
called before calling del on an DBClass object. This is only useful when
you want to free up some memory when your done with a DBClass object,
but the program is going to continue to run. It works by removing all
references to the class your trying to remove so that the python ref
count will be low enough for garbage collection to free up the memory.
Calling del without calling _destroySelf will NOT remove the object from
memory. To go back to the memory leaky version check out tag
'pre_aug_2005_mem_patch'.