auto gen dmp file when crash

crash_dumper.cpp

#include <windows.h>
#include <tchar.h>
#include <dbghelp.h>
#include <string>

#include "crash_dumper.h"


#ifdef UNICODE
#     define tstring wstring
#else
#     define tstring string
#endif

#pragma comment(lib, "dbghelp.lib")

CrashDumper dumper;

//
CrashDumper::CrashDumper()
{
    m_OriginalFilter = SetUnhandledExceptionFilter(ExceptionFilter);
}

//
CrashDumper::~CrashDumper()
{
    SetUnhandledExceptionFilter(m_OriginalFilter);
}


//
LONG WINAPI CrashDumper::ExceptionFilter(struct _EXCEPTION_POINTERS* ExceptionInfo)
{
    bool bDumpOK = false;
    DWORD dwProcess = GetCurrentProcessId();
    HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwProcess);
    if (hProcess != INVALID_HANDLE_VALUE)
    {
        TCHAR szPath[MAX_PATH];
        if (GetModuleFileName(NULL, szPath, sizeof(szPath)))
        {
            std::tstring strDumpFileName = szPath;
            strDumpFileName += TEXT(".dmp");
            HANDLE hFile = CreateFile(strDumpFileName.c_str(), FILE_ALL_ACCESS, 0, NULL, CREATE_ALWAYS, NULL, NULL);
            if (hFile != INVALID_HANDLE_VALUE)
            {
                MINIDUMP_EXCEPTION_INFORMATION exception_information;
                exception_information.ThreadId = GetCurrentThreadId();
                exception_information.ExceptionPointers = ExceptionInfo;
                exception_information.ClientPointers = TRUE;
                if (MiniDumpWriteDump(hProcess, dwProcess, hFile, MiniDumpNormal, &exception_information, NULL, NULL))
                {
                    bDumpOK = true;
                }

                CloseHandle(hFile);
            }
        }
        CloseHandle(hProcess);
    }

    if (bDumpOK)
        MessageBox(NULL, TEXT("本程序遇到未处理的异常，MiniDump 文件已经生成在程序的运行目录。"), TEXT("提示"), MB_ICONERROR | MB_OK);
    else
        MessageBox(NULL, TEXT("本程序遇到未处理的异常，生成 MiniDump 文件失败。"), TEXT("提示"), MB_ICONERROR | MB_OK);

    return EXCEPTION_EXECUTE_HANDLER;
}


bool CrashDumper::_PlaceHolder() { return true; }

crash_dumper.h

#pragma once

#include <windows.h>

class CrashDumper
{
public:
    CrashDumper();
    ~CrashDumper();
    static bool _PlaceHolder();

private:

    LPTOP_LEVEL_EXCEPTION_FILTER m_OriginalFilter;
    static LONG WINAPI ExceptionFilter(struct _EXCEPTION_POINTERS* ExceptionInfo);
};


namespace
{
    const bool bPlaceHolder = CrashDumper::_PlaceHolder();
}