Re: ftw/nftw is limited by stack size

[Ulrich Drepper]

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Jim Meyering wrote:

> What do you think about rewriting it to use space on the heap
> rather than on the stack?

It makes the general case slower for the few lunatics with such
filesystem hierachies.  That's absolutely not desirable.

Instead you could work around the problem (for some platforms) by using
not the normal stack, but instead some allocated memory.

use mmap() to allocate many many megabytes of memory (maybe even you the
automatic-grow feature Linux provides, although this might also be
limited by the stack size).  This won't actually require any physical
memory.  Then use makecontext and setcontext to use this memory.

- -- 
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Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
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