93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
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#include "cpp_err.h"
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#include <string>
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#ifdef _MSC_VER
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#include "windows.h"
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#include "DbgHelp.h"
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#endif
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void stackoverflow()
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{
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// 1.线程栈空间有上限: windows 默认：1MB，Linux默认 2MB。
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// 2.当前线程占用栈空间大小：线程函数调用堆栈中各个函数占用的栈空间总和。
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// 3.哪些对象占用了栈空间：
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// (1)函数局部变量
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// (2)调用函数的参数
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// 4.常见引发栈溢出的原因：
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// (1)递归太深
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// (2)局部变量占用太大
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// (3)switch-case case分支过多。
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// (4)死循环调用
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// 5.发生线程栈溢出时，VS可能直接退出，无法看到调用堆栈，可以使用WinDBG查看。
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}
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#ifdef _MSC_VER
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int GenerateMiniDump(PEXCEPTION_POINTERS pExceptionPointers, const std::string& dump_dir)
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{
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// 定义函数指针
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typedef BOOL(WINAPI * MiniDumpWriteDumpT)(
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HANDLE,
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DWORD,
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HANDLE,
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MINIDUMP_TYPE,
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PMINIDUMP_EXCEPTION_INFORMATION,
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PMINIDUMP_USER_STREAM_INFORMATION,
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PMINIDUMP_CALLBACK_INFORMATION
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);
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// 从 "DbgHelp.dll" 库中获取 "MiniDumpWriteDump" 函数
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MiniDumpWriteDumpT pfnMiniDumpWriteDump = NULL;
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HMODULE hDbgHelp = LoadLibrary("DbgHelp.dll");
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if (NULL == hDbgHelp)
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{
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return EXCEPTION_CONTINUE_EXECUTION;
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}
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pfnMiniDumpWriteDump = (MiniDumpWriteDumpT)GetProcAddress(hDbgHelp, "MiniDumpWriteDump");
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if (NULL == pfnMiniDumpWriteDump)
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{
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FreeLibrary(hDbgHelp);
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return EXCEPTION_CONTINUE_EXECUTION;
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}
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// 创建 dmp 文件
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char path_buffer[512]{};
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char szVersion[] = "DumpDemo_v1.0";
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SYSTEMTIME stLocalTime;
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GetLocalTime(&stLocalTime);
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std::snprintf(path_buffer, sizeof(path_buffer), "%s\\%s-%04d%02d%02d-%02d%02d%02d.dmp", dump_dir.c_str(),
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szVersion, stLocalTime.wYear, stLocalTime.wMonth, stLocalTime.wDay,
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stLocalTime.wHour, stLocalTime.wMinute, stLocalTime.wSecond);
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HANDLE hDumpFile = CreateFile(path_buffer, GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_WRITE | FILE_SHARE_READ, 0, CREATE_ALWAYS, 0, 0);
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if (INVALID_HANDLE_VALUE == hDumpFile)
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{
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FreeLibrary(hDbgHelp);
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return EXCEPTION_CONTINUE_EXECUTION;
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}
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// 写入 dmp 文件
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MINIDUMP_EXCEPTION_INFORMATION expParam;
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expParam.ThreadId = GetCurrentThreadId();
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expParam.ExceptionPointers = pExceptionPointers;
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expParam.ClientPointers = FALSE;
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pfnMiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(),
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hDumpFile, MiniDumpWithDataSegs, (pExceptionPointers ? &expParam : NULL), NULL, NULL);
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// 释放文件
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CloseHandle(hDumpFile);
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FreeLibrary(hDbgHelp);
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return EXCEPTION_EXECUTE_HANDLER;
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}
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LONG WINAPI ExceptionFilter(LPEXCEPTION_POINTERS lpExceptionInfo)
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{
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// 这里做一些异常的过滤或提示
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if (IsDebuggerPresent())
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{
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return EXCEPTION_CONTINUE_SEARCH;
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}
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return GenerateMiniDump(lpExceptionInfo, "D:\\");
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}
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// windows cpp 崩溃使用 windbg 调试
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void use_windbg()
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{
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SetUnhandledExceptionFilter(ExceptionFilter);
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}
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#endif
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