fa25-cs354 cs354heapdynamic-memory-allocationPlacement-policies
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Sign in to readMidterm Exam 1 - Wednesday, October 1, 2025, 7:30 - 9:30 pm
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Posix brk & unistd.h
DIY “Do It Yourself” Heap via Posix Calls
C’s Heap Allocator & stdlib.h
C’s Heap Allocator Functions
Meet the Heap
Two Allocator Approaches
Allocator Design
Two Goals
Requirements
Design Considerations
Simple View of Heap
Rotated Linear Memory Layout
Run 1: Simple View of Heap Allocation
Free Block Organization
Explicit Free List
Implicit Free List
Implicit Free List
Layout 1: Basic Heap Block
Run 2: Heap Allocation with Block Headers
Placement Policies
First Fit (FF)
Next Fit (NF)
Best Fit (BF)
Run 3: Heap Allocation using Placement Policies