Hi,
> Um... no. At least not if it does the sensible thing and maps it
> for shared read.
I don't think it is even possible to mmap somthing for "private read".
The boost lib only ever sets the SHARED flag when it wants write access:
void* data = ::mmap( hint, pimpl_->size_,
readonly ? PROT_READ : (PROT_READ |PROT_WRITE),
readonly ? MAP_PRIVATE : MAP_SHARED,
pimpl_->handle_, p.offset );
I guess that a "shared" mode is implicitly used by mmap if you specify
read access only; anything else would not make sense (and would mean
that the boost guys got it wrong, which is not impossible but rare).
Bye
Frederik
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