Noted. I'll have to look at the standard again.
However, there are suggestive scraps of googlable evidence which weigh in
for contiguous vectors - like the following from Scott Meyers' errata to
'Effective STL'. (Emphasis mine.)
5/ 9/01 sdm Many In most places where I mention arrays, I should
mention valarrays, too. [Like vectors, valarrays
are constrained to have contiguous storage], and
this means that pointers can be used as iterators
into valarrays.
Regards,
Vince Virgilio
> -----Original Message-----
> From: André Kempe [mailto:andre_at_[hidden]]
> Sent: Wednesday, April 23, 2003 2:05 AM
> To: General LAM/MPI mailing list
> Subject: Re: LAM: MPI datatypes
>
>
> Hi,
>
> I would be very causious with that assumption. I had a short
> glimpse at
> the C++ standard (ISO 14482), and it says nothing about the
> requirered
> memory-managment of the vector.
>
> If it would do so, you could ask
> a. what the allocator-template-argument is good for, and
> b. why is there no function const T* data() similar to const char *
> c_str() of std::string for dircect-memory-access
>
> This would leave only three possibilities to get the stl::vector work
> with MPI. Either create a temporary copy, or have a real
> close look at
> your stl-implemetation, or write your own container that meets your
> requirements.
>
> Good Luck
>
> André
>
> Virgilio, Vincent wrote:
>
> >I am under the impression that one of the (perhaps implicit)
> >requirements of the C++ STL is that std::vectors are stored in
> >contiguous memory. So the below code should work with all
> conformant
> >C++ compilers.
> >
> >Vince Virgilio
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