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Postings from June 2013
On Wed, May 29, 2013 at 05:22:05PM -0700, Tony Cook via RT wrote: > On Tue May 28 03:06:14 2013, tonyc wrote: > > Our test regexp is UTF-8, if scan were under 0x80000000 this code > > would be sane, unfortunately, the string in my test cases we being > > allocated at very high address, from debugging code I added: > > Last night I spent some time trying to figure out if I can run the > entire test suite allocating above the 2G line, but I couldn't see a > simple way to do it. > > The glibc supplied with Mageia appears to switch to mmap() for allocation > (instead of brk()) inside threads, and mmap() is allocating above the > 2G line. > > The only other way I can see to do that would be a custom malloc(), but > I'm not sure I want to work that hard. I suspect that Perl's malloc can be (ab)used so that it always allocates "more core" by using mmap. But in turn I don't know if mmap() can be told to allocate address above 2G (distinct from "allocate at this address). And I agree, I'm not sure if it's worth it. Nicholas ClarkThread Previous