记一次Qt项目调试dmp文件

参考:(2条消息) Qt-生成dump文件_亅会飞的乌龟的博客-CSDN博客

调试需要的代码及工程设置

• Helper.h 在后面
• .pro文件添加调试设置

  CONFIG += force_debug_info
  CONFIG += separate_debug_info
  

• 使用,在main函数中

  SetUnhandledExceptionFilter(ExceptionFilter);
  

vs如何调试dmp文件

vs --> 打开dmp文件 --> 选择pdb文件(或加载Microsoft服务)
后记:

• 我本次报错在"0x00fa1c29 处有未经处理的异常: 0xC00000FD: Stack overflow" 原因是栈溢出, 栈默认1M大小,在栈上分配了超过1M即会报该错, 比较有意思是该错误比较隐蔽,比如char buf[1024*2048]该行栈溢出,但是在该行前的代码也执行不到,好像因为是进入该函数(栈域),才分配该局部内存,分配失败,该函数也就不会执行

• Helper.h

  #pragma once
  #include <tchar.h>
  #include <Windows.h>
  #include <DbgHelp.h>
  
  #pragma comment(lib, "user32.lib")
  
  int GenerateMiniDump(PEXCEPTION_POINTERS pExceptionPointers)
  {
          // 定义函数指针
          typedef BOOL(WINAPI * MiniDumpWriteDumpT)(
                  HANDLE,
                  DWORD,
                  HANDLE,
                  MINIDUMP_TYPE,
                  PMINIDUMP_EXCEPTION_INFORMATION,
                  PMINIDUMP_USER_STREAM_INFORMATION,
                  PMINIDUMP_CALLBACK_INFORMATION
                  );
          // 从 "DbgHelp.dll" 库中获取 "MiniDumpWriteDump" 函数
          MiniDumpWriteDumpT pfnMiniDumpWriteDump = NULL;
          HMODULE hDbgHelp = LoadLibrary(_T("DbgHelp.dll"));
          if (NULL == hDbgHelp)
          {
                  return EXCEPTION_CONTINUE_EXECUTION;
          }
          pfnMiniDumpWriteDump = (MiniDumpWriteDumpT)GetProcAddress(hDbgHelp, "MiniDumpWriteDump");
  
          if (NULL == pfnMiniDumpWriteDump)
          {
                  FreeLibrary(hDbgHelp);
                  return EXCEPTION_CONTINUE_EXECUTION;
          }
          // 创建 dmp 文件件
          TCHAR szFileName[MAX_PATH] = { 0 };
      TCHAR szVersion[] = L"DumpFile";
          SYSTEMTIME stLocalTime;
          GetLocalTime(&stLocalTime);
          wsprintf(szFileName, L"%s-%04d%02d%02d-%02d%02d%02d.dmp",
                  szVersion, stLocalTime.wYear, stLocalTime.wMonth, stLocalTime.wDay,
                  stLocalTime.wHour, stLocalTime.wMinute, stLocalTime.wSecond);
          HANDLE hDumpFile = CreateFile(szFileName, GENERIC_READ | GENERIC_WRITE,
                  FILE_SHARE_WRITE | FILE_SHARE_READ, 0, CREATE_ALWAYS, 0, 0);
          if (INVALID_HANDLE_VALUE == hDumpFile)
          {
                  FreeLibrary(hDbgHelp);
                  return EXCEPTION_CONTINUE_EXECUTION;
          }
          // 写入 dmp 文件
          MINIDUMP_EXCEPTION_INFORMATION expParam;
          expParam.ThreadId = GetCurrentThreadId();
          expParam.ExceptionPointers = pExceptionPointers;
          expParam.ClientPointers = FALSE;
          pfnMiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(),
                  hDumpFile, MiniDumpWithDataSegs, (pExceptionPointers ? &expParam : NULL), NULL, NULL);
          // 释放文件
          CloseHandle(hDumpFile);
          FreeLibrary(hDbgHelp);
          return EXCEPTION_EXECUTE_HANDLER;
  }
  
  LONG WINAPI ExceptionFilter(LPEXCEPTION_POINTERS lpExceptionInfo)
  {
          // 这里做一些异常的过滤或提示
      if (IsDebuggerPresent()) {
                  return EXCEPTION_CONTINUE_SEARCH;
          }
          return GenerateMiniDump(lpExceptionInfo);
  }