track C++ memory allocations

by

Use Valgrind and its tool Massif. Its example output (a part of it):

99.48% (20,000B) (heap allocation functions) malloc/new/new[], --alloc-fns, etc.
->49.74% (10,000B) 0x804841A: main (example.c:20)
| 
->39.79% (8,000B) 0x80483C2: g (example.c:5)
| ->19.90% (4,000B) 0x80483E2: f (example.c:11)
| | ->19.90% (4,000B) 0x8048431: main (example.c:23)
| |   
| ->19.90% (4,000B) 0x8048436: main (example.c:25)
|   
->09.95% (2,000B) 0x80483DA: f (example.c:10)
  ->09.95% (2,000B) 0x8048431: main (example.c:23)

So, you will get detailed information:

  • WHO allocated the memory (functions: g(), f(), and main() in above example); you also get complete backtrace leading to allocating function,
  • to WHICH data structure the memory did go (no data structures in above example),
  • WHEN it happened,
  • what PERCENTAGE of all allocated memory it is (g: 39.7%, f: 9.95%, main: 49.7%).

Here is Massif manual

You can track heap allocation as well as stack allocation (turned off by default).

PS. I just read that you’re on Windows. I will leave the answer though, because it gives a picture of what you can get from a possible tool.

More Related Contents:

  1. How to properly replace global new & delete operators
  2. How to get memory usage under Windows in C++
  3. Creating an empty .zip file in C++
  4. Global memory management in C++ in stack or heap?
  5. C++ cross-compiler from Windows to Linux [closed]
  6. The program can’t start because libgcc_s_dw2-1.dll is missing
  7. Why doesn’t delete set the pointer to NULL?
  8. How do I get console output in C++ with a Windows program?
  9. Smart pointers: who owns the object? [closed]
  10. How to convert std::string to LPCSTR?
  11. Is there a reason to call delete in C++ when a program is exiting anyway?
  12. Why is stack memory size so limited?
  13. c++, usleep() is obsolete, workarounds for Windows/MingW?
  14. know if .lib is static or import
  15. How can I redirect stdout to some visible display in a Windows Application?
  16. DLL redirection using manifests
  17. How do you determine the size of an object in C++?
  18. Initial capacity of vector in C++
  19. How to read output from cmd.exe using CreateProcess() and CreatePipe()
  20. Why is there no reallocation functionality in C++ allocators?
  21. Is it safe to realloc memory allocated with new?
  22. How do I get the application data path in Windows using C++?
  23. What do I need to do before deleting elements in a vector of pointers to dynamically allocated objects?
  24. Get current username in C++ on Windows
  25. Wrote to a file using std::wofstream. The file remained empty
  26. How to download a file with WinHTTP in C/C++?
  27. WinAPI Sleep() function call sleeps for longer than expected
  28. Get HWND on windows with Qt5 (from WId)
  29. Boost linker error: Unresolved external symbol “class boost::system::error_category const & __cdecl boost::system::get_system_category(void)”
  30. How to tame the Windows headers (useful defines)?

Leave a Comment