STL custom allocator design

[Dave Rahardja]

Where would I go to learn how to create a custom STL allocator? I want to
manage memory in a particular way for certain containers.

-dr

 

[Mark P]

Where would I go to learn how to create a custom STL allocator? I want to
manage memory in a particular way for certain containers.

-dr

Here's an example:

http://www.josuttis.com/libbook/memory/myalloc.hpp.html

Now modify to fit your needs.

 

[Alan Johnson]

Where would I go to learn how to create a custom STL allocator? I want to
manage memory in a particular way for certain containers.

-dr

Josuttis has some sample code online from his book "The C++ Standard
Library - A Tutorial and Reference". Obviously the book would help to
put it all into context, but the sample code is straightforward and has
a lot of comments:
http://www.josuttis.com/libbook/memory/myalloc1.cpp.html

 

[gamediaceo]

What would be the benefit of creating a custom allocator for an STL
container?

Cheers, Henry

 

[Dave Rahardja]

What would be the benefit of creating a custom allocator for an STL
container?

In an embedded system that must contend with both long uptimes and small
amounts of memory, it is often beneficial to manage dynamic memory allocation
"by hand". I'd still like to use vector, string, etc., but I'd like to
constrain how the memory is allocated (e.g. from a pool or section of memory).

-dr