之前转载过一片文章Qt–让你的客户端崩溃之前生成dump文件,文章中介绍了如何生成crash日志,不够形象直观,如果能够生成用vs打开的dump文件那就更好了,下面开始介绍。
这种情况其实比较简单,我们直接在qmale构建配置的地方的额外的参数项上加上"CONFIG+=force_debug_info" "CONFIG+=separate_debug_info"即可,主要用来生成pdb文件。
#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);}
调用:
#include <QApplication>#include "Helper.h"int main(int argc, char *argv[]){ SetUnhandledExceptionFilter(ExceptionFilter); QApplication a(argc, argv); int *p = nullptr; *p = 100; return a.exec();}
给一个空指针赋值程序肯定会crash掉。
然后我们将pdb文件和生成dump文件拷贝到源码目录:
关于breakpad的框架在Qt中的使用,这篇文章讲的很好,大家可以参看下。
https://github.com/JPNaude/dev_notes/wiki/Using-Google-Breakpad-with-Qt
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