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vaiorabbit/TLSLeakCheck.cpp

Last active March 27, 2021 12:41
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Revisions

  1. vaiorabbit revised this gist Mar 27, 2021. 1 changed file with 3 additions and 2 deletions.
    5 changes: 3 additions & 2 deletions TLSLeakCheck.cpp
    View file
    Original file line number Diff line number Diff line change
    @@ -1,7 +1,8 @@
    // Ref.: https://stackoverflow.com/questions/4790564/finding-memory-leaks-in-a-c-application-with-visual-studio
    #include "windows.h"
    #define _CRTDBG_MAP_ALLOC //to get more details
    #define _CRTDBG_MAP_ALLOC
    #include <stdlib.h>
    #include <crtdbg.h> //for malloc and free
    #include <crtdbg.h>
    #include <SDL.h>

    class Application
  2. vaiorabbit created this gist Mar 27, 2021.
    91 changes: 91 additions & 0 deletions TLSLeakCheck.cpp
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,91 @@
    #include "windows.h"
    #define _CRTDBG_MAP_ALLOC //to get more details
    #include <stdlib.h>
    #include <crtdbg.h> //for malloc and free
    #include <SDL.h>

    class Application
    {
    public:
    static void* Allocate(size_t size)
    {
    return malloc(size);
    }

    static void* AllocateArray(size_t count, size_t size)
    {
    return calloc(count, size);
    }

    static void* Reallocate(void* ptr, size_t size) {
    return realloc(ptr, size);
    }

    static void Free(void* ptr) {
    return free(ptr);
    }

    Application() = default;

    ~Application()
    {
    ReportDifference();
    }

    void Initialize()
    {
    _CrtMemCheckpoint(&m_memoryStateInit);
    SDL_SetMemoryFunctions(Application::Allocate, Application::AllocateArray, Application::Reallocate, Application::Free);
    SDL_Init(0);
    }

    void Finalize()
    {
    SDL_Quit();
    _CrtMemCheckpoint(&m_memoryStateTerm);
    }

    private:

    void ReportDifference()
    {
    _CrtMemState memoryStateDiff;
    if (_CrtMemDifference(&memoryStateDiff, &m_memoryStateInit, &m_memoryStateTerm))
    {
    _CrtMemDumpStatistics(&memoryStateDiff);
    _CrtDumpMemoryLeaks();
    }
    }

    _CrtMemState m_memoryStateInit;
    _CrtMemState m_memoryStateTerm;
    };

    ////////////////////////////////////////////////////////////////////////////////////////////////////

    int main(int argc, char** argv)
    {
    Application app;

    app.Initialize();
    app.Finalize();

    return 0;
    }

    /*
    220 bytes in 2 Normal Blocks.
    0 bytes in 0 CRT Blocks.
    0 bytes in 0 Ignore Blocks.
    0 bytes in 0 Client Blocks.
    Largest number used: 283 bytes.
    Total allocations: 305 bytes.
    Detected memory leaks!
    Dumping objects ->
    C:\Users\foo\Documents\TLSLeakCheck\TLSLeakCheck.cpp(14) : {97} normal block at 0x000001746C68B3F0, 132 bytes long.
    Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    C:\Users\foo\Documents\TLSLeakCheck\TLSLeakCheck.cpp(23) : {96} normal block at 0x000001746C68ABA0, 88 bytes long.
    Data: < hlt > 05 00 00 00 CD CD CD CD F0 B3 68 6C 74 01 00 00
    Object dump complete.
    HEAP[TLSLeakCheck.exe]: Invalid address specified to RtlValidateHeap( 000001746C680000, 000001746C660020 )
    */