C++ 程序崩溃时生成Dump文件

本方法仅限于windows平台下，跨平台不可用。

路径需要为全路径，默认生成在当前程序的执行目录。

注意路径的字符类型。

#include <DbgHelp.h>

//生产DUMP文件
int GenerateMiniDump(HANDLE hFile, PEXCEPTION_POINTERS pExceptionPointers, PWCHAR pwAppName)
{
    BOOL bOwnDumpFile = FALSE;
    HANDLE hDumpFile = hFile;
    MINIDUMP_EXCEPTION_INFORMATION ExpParam;

    typedef BOOL(WINAPI * MiniDumpWriteDumpT)(
        HANDLE,
        DWORD,
        HANDLE,
        MINIDUMP_TYPE,
        PMINIDUMP_EXCEPTION_INFORMATION,
        PMINIDUMP_USER_STREAM_INFORMATION,
        PMINIDUMP_CALLBACK_INFORMATION
        );

    MiniDumpWriteDumpT pfnMiniDumpWriteDump = NULL;
    HMODULE hDbgHelp = LoadLibrary(L"DbgHelp.dll");
    if (hDbgHelp)
        pfnMiniDumpWriteDump = (MiniDumpWriteDumpT)GetProcAddress(hDbgHelp, "MiniDumpWriteDump");

    if (pfnMiniDumpWriteDump)
    {
        if (hDumpFile == NULL || hDumpFile == INVALID_HANDLE_VALUE)
        {
            TCHAR szFileName[MAX_PATH] = { 0 };
            TCHAR* szVersion = L"v1.0";
            TCHAR dwBufferSize = MAX_PATH;
            SYSTEMTIME stLocalTime;
            GetLocalTime(&stLocalTime);
            CreateDirectory(szFileName, NULL);

            wsprintf(szFileName, L"%s-%04d%02d%02d-%02d%02d%02d-%ld-%ld.dmp",
                szVersion,
                stLocalTime.wYear, stLocalTime.wMonth, stLocalTime.wDay,
                stLocalTime.wHour, stLocalTime.wMinute, stLocalTime.wSecond,
                GetCurrentProcessId(), GetCurrentThreadId());
　　　　　　　// szFileName是全路径文件名，这样可以指定dump文件的保存位置
            hDumpFile = CreateFile(szFileName, GENERIC_READ | GENERIC_WRITE,
                FILE_SHARE_WRITE | FILE_SHARE_READ, 0, CREATE_ALWAYS, 0, 0);

            bOwnDumpFile = TRUE;
            OutputDebugString(szFileName);
        }

        if (hDumpFile != INVALID_HANDLE_VALUE)
        {
            ExpParam.ThreadId = GetCurrentThreadId();
            ExpParam.ExceptionPointers = pExceptionPointers;
            ExpParam.ClientPointers = FALSE;

            pfnMiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(),
                hDumpFile, MiniDumpWithDataSegs, (pExceptionPointers ? &ExpParam : NULL), NULL, NULL);

            if (bOwnDumpFile)
                CloseHandle(hDumpFile);
        }
    }

    if (hDbgHelp != NULL)
        FreeLibrary(hDbgHelp);

    return EXCEPTION_EXECUTE_HANDLER;
}


LONG WINAPI ExceptionFilter(LPEXCEPTION_POINTERS lpExceptionInfo)
{
    if (IsDebuggerPresent())
    {
        return EXCEPTION_CONTINUE_SEARCH;
    }

    return GenerateMiniDump(NULL, lpExceptionInfo, L"test");
}


int main()
{
    //dump文件功能 
    SetUnhandledExceptionFilter(ExceptionFilter);
}