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C++ Memory and Stack Analyzer

This project analyzes memory usage, recursion depth, and system resource limits in C++ on Linux systems.

The program measures CPU usage, heap allocation behavior, and recursion stack growth using Linux system calls such as getrusage and getrlimit.

Features

  • Prints system stack and heap limits
  • Analyzes heap memory allocation
  • Measures recursion depth
  • Tracks CPU user time and system time
  • Detects heap allocation limits
  • Exports runtime measurements for further analysis

The program generates the following files:

  • gnuMem.txt – data from the heap allocation experiment
  • gnuRec.txt – data from the recursion experiment

Technologies

  • C++
  • Linux system calls
  • getrusage
  • getrlimit
  • file output using ofstream

Experiments

The program performs several experiments to analyze memory behavior.

Heap Memory Experiment

The function funcMem() dynamically allocates memory on the heap and measures CPU usage during the allocation process.

This experiment shows how user CPU time and system CPU time evolve as memory allocation increases.

Recursion Experiment

The function funcRec() recursively calls itself and allocates stack memory during each recursion step.

This demonstrates how recursion depth affects CPU time and stack usage.

Automatic Heap Test

The program automatically increases heap allocation until a bad_alloc exception occurs.

This helps determine the practical heap memory limit of the system.

Automatic Stack Test

The program recursively calls a function until a stack overflow occurs, estimating the maximum recursion depth.

Compile

Compile the program using g++:

g++ -std=c++17 main.cpp -o analyzer