当前位置：首页 > news >正文

Qt下生成pdb文件，并在exe崩溃时生成dmp文件，且由dmp查询崩溃原因

news 来源：原创 2024/4/29 4:22:52

一、编译时生成pdb文件

选择profile编译即可，在此模式下，既可享受release的运行速度，又可以享受debug的符号查找。
发布的程序可以正常运行在生产环境，尤其是适合在一些实时性要求高的项目中。
在这里插入图片描述

二、在exe崩溃时生成dmp文件

参考：
https://blog.csdn.net/a844651990/article/details/85225273

声明函数

DumpHelper.h

#ifndef DUMPHELPER_H
#define DUMPHELPER_H

#include <QSystemSemaphore>
#include <QDir>
#include <QDateTime>
#include <QDebug>

#include <tchar.h>
#include <Windows.h>
#include <DbgHelp.h>

#pragma comment(lib, "user32.lib")
#pragma comment(lib, "DbgHelp.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);
}

long __stdcall errCallback(_EXCEPTION_POINTERS*  pException)
{
 
//     //用于崩溃重启
//    // 信号量的意义，把操作共享内存的代码锁住。因为有可能同时启动, 防止并发
//    QSystemSemaphore sema("DyError", 1, QSystemSemaphore::Open);
//    sema.acquire();


    QDir dir;
    dir.mkdir("./dumps");
    dir.cd("./dumps");

    /*
      ***保存数据代码***
    */

    QString fileName = dir.path() + "/" +
                       QDateTime::currentDateTime().toString("yyyyMMdd_HHmmss.zzz") + ".dmp";

    LPCWSTR pFileName = (LPCWSTR)fileName.unicode();

    //创建 Dump 文件
    HANDLE hDumpFile = CreateFile(pFileName,
                                  GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    qDebug() << "create dumpFile:" << hDumpFile << INVALID_HANDLE_VALUE;
    if(hDumpFile != INVALID_HANDLE_VALUE)
    {
        //Dump信息
        MINIDUMP_EXCEPTION_INFORMATION dumpInfo;
        dumpInfo.ExceptionPointers = pException;
        dumpInfo.ThreadId = GetCurrentThreadId();
        dumpInfo.ClientPointers = TRUE;
        //写入Dump文件内容
        MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), hDumpFile, MiniDumpNormal, &dumpInfo, NULL, NULL);
    }

//    delete  unimem;

//    qDebug() << "start application:" << QProcess::startDetached(qApp->applicationFilePath(), QStringList());//重启

//    qApp->quit();
    qApp->exit(-1);

    return EXCEPTION_EXECUTE_HANDLER;
}


#endif // DUMPHELPER_H

调用函数

在main函数中注册

main.cpp

#include "mainwindow.h"

#include <QApplication>

#include "DumpHelper.h"

int main(int argc, char *argv[])
{
//    SetUnhandledExceptionFilter(ExceptionFilter); // dmp文件比较大
    SetUnhandledExceptionFilter(errCallback); // dmp文件比较小

    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}