Alex Martelli wrote: > > So, I thought I'd turn to the "wisdom of crowds"... how would YOU guys > go about adding to your automated regression tests one that checks that > a certain memory leak has not recurred, as cross-platform as feasible? > In particular, how would you code _memsize() "cross-platformly"? (I can > easily use C rather than Python if needed, adding it as an auxiliary > function for testing purposes to my existing extension).
If you are doing Unix, can you use getrusage(2)? >>> import resource >>> r = resource.getrusage(resource.RUSAGE_SELF) >>> print r[2:5] I get zeroes on my gentoo amd64 box. Not sure why. I thought maybe it was Python, but C gives the same results. Another possibiity is to call sbrk(0) which should return the top of the heap. You could then return this value and check it. It requires a tiny C module, but should be easy and work on most unixes. You can determine direction heap grows by comparing it with id(0) which should have been allocated early in the interpreters life. I realize this isn't perfect as memory becomes fragmented, but might work. Since 2.3 and beyond use pymalloc, fragmentation may not be much of an issue. As memory is allocated in a big hunk, then doled out as necessary. These techniques could apply to Windows with some caveats. If you are interested in Windows, see: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnucmg/html/UCMGch09.asp Can't think of anything fool-proof though. HTH, n -- http://mail.python.org/mailman/listinfo/python-list
