CppCon 2017: Bob Steagall “How to Write a Custom Allocator”
CppCon.org
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Presentation Slides, PDFs, Source Code and other presenter materials are available at: github.com/CppCon/CppCon2017
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Youd like to improve the performance of your application with regard to memory management, and you believe this can be accomplished by writing a custom allocator. But where do you start? Modern C brings many improvements to the standard allocator model, but with those improvements come several issues that must be addressed when designing a new allocator.
This talk will provide guidance on how to write custom allocators for the C 14/C 17 standard containers. It will cover the requirements specified by the standard, and will describe the facilities provided by the standard to support the new allocator model and allocator-aware containers. Well look at the issues of allocator identity and propagation, and examine their implications for standard library users, standard library implementers, and custom allocator implementers. Well see how a container uses its allocator, including when and how a containers allocator instance propagates. This will give us the necessary background to describe allocators that implement unusual semantics, such as a stateful allocator type whose instances compare non-equal. Finally, the talk will provide some guidelines for how to specify a custom allocators public interface based on the semantics it provides.
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Bob Steagall: KEWB Computing, CppCon 2017 Poster Chair
Ive been working in C for the last 25 years. The majority of my career has been spent in medical imaging, where I led teams building applications for functional MRI and CT-based cardiac visualization. After a brief journey through the world of DNS and analytics, Im now working in the area of stream processing.
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