Re: Large strings in ADA

[Johan Groth <jgroth@xpress.se>]

tmoran@bix.com wrote:
> 
> >Perhaps you should try duplicating the -exact- C semantics. Presumably
> >you have a -very- large char buffer into which the items are copied.
> 
>   If the original is in C, it must have something like
>      char Msg[2500000];  // 2.5 MB
> so the straightforward Ada equivalent would be
>      Msg : String(1 .. 2_500_000);  -- 2.5 MB

The above is the current solution but it doesn't work as it uses to much
memory. The C-program reallocates the buffer only if the string added to
it exceeds its current size and if it reallocates it grows with a power
of 2. So if the buffer was 8 bytes big and you added 9 bytes the buffer
would become 32 bytes big.

So I will try to use the C-sematics and let the message-buffer grow the
same way and use replace_slice to add the string to the buffer.

/Johan

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           Johan Groth <jgroth@xpress.se> Kupolen Data