Re: [Boost-users] Stupid ostringstream question

From: Richard (richard_at_[hidden])
Date: 2007-07-27 15:47:54

Have you tried investing in a replacement memory manager?

It might give you a bigger overall payback than just tinkering with one
aspect.

Best-of-luck,

- Richard

-----Original Message-----
From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Bill Lear
Sent: 27 July 2007 20:36
To: boost-users_at_[hidden]
Subject: [Boost-users] Stupid ostringstream question

I have been searching the world in vain for a stringstream that works
with a static buffer, and does not use the heap for memory allocation.
We have an application that uses lots (12-16Gb) of memory.  This puts
a strain on the memory allocation routines, and when we want to create
a small string we find that stringstream is very, very expensive, and
sprintf into a static buffer much, much faster.

Does boost provide anything like this?

This actually came up when we realized that boost lexical_cast was
using stringstream.  When we replaced it with sprintf, our runtimes
(when memory usage was very high) went down significantly.  I should
also point out that ANYTHING we did with dynamic memory at that point
in the application (vector::push_back, for example) was hideously
slow.

I'd like to have the best of both worlds: the relatively clear
syntax of the ostringstream inserters, working on a static buffer.

Any help (code samples especially) appreciated.

Bill
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