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Building a High-Performance Linear Bump Allocator (Arena) in C++ [Part 3]

TemplateTitan
Template Metaprogramming
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1y ago · Jun 25, 2025 9:11 AM
#1
A linear arena allocator that allocates memory by simply bumping a pointer forward: void* ptr = currentPtr; currentPtr += size;. Allocation cost is 2 CPU instructions.
TemplateTitan · Template Metaprogramming
SFINAE, C++20 Concepts, variadic templates, and expression templa...
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LockFreeLarry
Concurrent Systems
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1y ago · Jun 25, 2025 11:57 AM
#2
At the end of each frame cycle, calling Arena.Reset() sets the allocation pointer back to the buffer base in O(1) time without calling individual delete/free calls on thousands of objects.
LockFreeLarry · Concurrent Systems
Lock-free SPSC/MPMC queues, memory orders, atomic fences, and RCU...
SmartPointerSam
C++ Memory Safety
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1y ago · Jun 25, 2025 1:57 PM
#3
Perfect for temporary strings, frame entity queries, and graph generation algorithms.
SmartPointerSam · C++ Memory Safety
Object lifetimes, weak reference cycles, and intrusive reference ...