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Re: How turn-off C-run time library memory diagnostics?
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Re: How turn-off C-run time library memory diagnostics?


  • Subject: Re: How turn-off C-run time library memory diagnostics?
  • From: Gen Kiyooka <email@hidden>
  • Date: Fri, 5 Aug 2005 12:16:24 -0700


On Aug 5, 2005, at 12:13 PM, Scott Ribe wrote:

System-provided malloc/free can't be expected to be high-performers,
because they don't know anything about
your application's algorithm or memory usage patterns.


Sometime around Jaguar/Panther Apple claimed to have implemented
high-performance multi-threaded malloc/free in the standard libraries. I
haven't had occasion to test those claims.


Granted, a custom allocator can often do better for specific
application-dependent patterns of use, but much of the "system- provided
can't be expected to..." arguments I've seen over the years were just weak
excuses for simple-minded implementations. For instance: CW did pretty well,
SmartHeap was fantastic, the one in Symantec Think C++ 6 was a stinking pile
of garbage.

Yep, SmartHeap was great. I used to demo RoboHelp at the same tradeshows
as those guys in '92/93 or so. I built my own allocators based on some of their
ideas. Subsegment allocation is the way to go, especially for C++, given the
copious amounts of allocations that the stl issues.


Gen



--
Scott Ribe
email@hidden
http://www.killerbytes.com/
(303) 665-7007 voice





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 >Re: How turn-off C-run time library memory diagnostics? (From: Scott Ribe <email@hidden>)

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