Architectural Patterns of Specialized Memory Allocators in C++ and Trade-Offs between Latency and Fragmentation

Citation: Maksim Martynov, "Architectural Patterns of Specialized Memory Allocators in C++ and Trade-Offs between Latency and Fragmentation", Universal Library of Engineering Technology, Volume 03, Issue 02.

Copyright: This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This article examines specialized memory allocation patterns in C++ through an architectural interpretation of allocator behavior under different object lifetime regimes. The topic remains relevant because engineering teams often optimize allocation speed at the hot path and detect the cost of that choice later, once memory retention, locality decay, and fragmentation begin to shape runtime behavior. The study aims to clarify how bump and arena allocators, pools, stack allocators, segregated lists, thread-local paths, and deferred reclamation schemes reshape the design space of high-performance software. The material base consists of ten recent scholarly publications selected from major computer science databases. The analytical procedure combines source analysis, comparative interpretation, conceptual synthesis, and typologization. The article develops a mechanism-centered account of allocator behavior, explains why latency and fragmentation belong to the same design problem, and formulates decision logic for choosing allocator patterns under bounded, mixed, and concurrent workloads. The practical value lies in offering a structured basis for memory architecture decisions in performance-critical C++ systems.

Keywords: C++, Memory Allocators, Arena Allocation, Pool Allocation, Fragmentation.

https://doi.org/10.70315/uloap.ulete.2026.0302013