关于创建的线程执行完就崩溃的问题

2014-01-17 10:10:13 685 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

记一次线程爆满导致服务器崩溃的问题排查记一次线程爆满导致服务器崩溃的问题排查1. 重启服务器2. 修改最大线程数3. 查找线程最大的java程序4. 导出问题程序的线程日志5. 找到问题代码6. 解决方案问题介绍：测试服务器突然无法连接，ssh登录不上。只有重启才能解决。重启一天后，又连接不上了。于是有了下面的排查过程，最终发现是有个java程序一直在创建线程，导致线程达到服务器最大数量，服务器崩溃。 1. 重启服务器重启后，ssh连接发现下面问题 fork faild:Cannot allocate memory 以为是内存满了阅读详情

我的程序有个要求，就是当按下某个按钮之后启动新进程，在新进程中安排一些操作等
的新进程弄好的但是执行完毕的时候总是自己死在了一个系统函数





inline void* CThreadSlotData::GetThreadValue(int nSlot)

{

	EnterCriticalSection(&m_sect);

	ASSERT(nSlot != 0 && nSlot < m_nMax);

	ASSERT(m_pSlotData != NULL);

	ASSERT(m_pSlotData[nSlot].dwFlags & SLOT_USED);

	ASSERT(m_tlsIndex != (DWORD)-1);

	if( nSlot <= 0 || nSlot >= m_nMax ) // check for retail builds.

	{

		LeaveCriticalSection(&m_sect);

		return NULL;

	}



	CThreadData* pData = (CThreadData*)TlsGetValue(m_tlsIndex);

	if (pData == NULL || nSlot >= pData->nCount)

	{

		LeaveCriticalSection(&m_sect);

		return NULL;

	}

	void* pRetVal = pData->pData[nSlot];

	LeaveCriticalSection(&m_sect);

	return pRetVal;

}

死在上面的 void* pRetVal = pData->pData[nSlot];
LeaveCriticalSection(&m_sect); 这块了

我的创建代码如下





void CBuildImageLibDlg::OnBnClickedButtonRecog()

{

	// TODO: Add your control notification handler code here

	m_pThrd = AfxBeginThread(RecogFunc,this,NULL,0,0,NULL);

	if( m_pThrd!= NULL)

	{

		m_ThreadHandle = m_pThrd->m_hThread;

		CloseHandle(m_ThreadHandle);

	}



}

...全文

C++11并发与多线程笔记（4）创建多个线程、数据共享问题分析、案例代码第四节创建多个线程、数据共享问题分析、案例代码一、创建和等待多个线程 void TextThread() { cout << "我是线程" << this_thread::get_id() << endl; /* … */ cout << "线程" << this_thread::get_id() << "执行结束" << endl; } //main函数里 vector 阅读详情

yimao_44

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切换为时间正序

w_xei 2014-01-17

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1、楼上说的正确，不要在工作线程中直接操作UI，应该使用消息机制操作UI；但这不应该是程序崩溃的原因 2、你在主线程中调用CThreadData* pData = (CThreadData*)TlsGetValue(m_tlsIndex); 没在线程函数中看到你使用LocalAlloc分配线程局部内存，使用TlsSetValue设置内存，所以没办法判断问题所在。初步估计是TlsGetValue取到的void*内存指针在强制转换成CThreadData*后，再访问时出错，应该是你取到的不是你希望要得到的地址，再访问时就会发生越界。这种多线程的内存访问需要多加注意。

见习学术士 2014-01-17

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引用 5 楼 u012162828 的回复:



UINT RecogFunc(LPVOID pParam)
{
	CBuildImageLibDlg * pDlg = (CBuildImageLibDlg *)pParam;
	if (pDlg->m_vecPath.size() <= 0)
	{
		::MessageBox(pDlg->m_hWnd, _T("请先加载图像!"), _T("提示"), MB_OK);
		return 0;;
	}

	TCHAR szPath[MAX_PATH];
	GetModuleFileName(AfxGetInstanceHandle(), szPath, MAX_PATH);
	CString strDir(szPath);
	strDir = strDir.Left(strDir.ReverseFind('\\')+1);
	SetCurrentDirectory(strDir);
	strDir += _T("TH-ImageOCR.dll");
	HINSTANCE Hins = LoadLibrary(strDir);
	if (Hins == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pInfoInit InfoInit = (pInfoInit)GetProcAddress(Hins, "WT_InfoInit");
	if (InfoInit == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pExtractInfo ExtractInfo = (pExtractInfo)GetProcAddress(Hins, "WT_ExtractInfo");
	if (ExtractInfo == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pExtractInfoEx ExtractInfoEx = (pExtractInfoEx)GetProcAddress(Hins, "WT_ExtractInfoEx");
	if (ExtractInfoEx == NULL)
	{
		int err = GetLastError();
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pInfoRelease InfoRelease = (pInfoRelease)GetProcAddress(Hins, "WT_InfoRelease");
	if (InfoRelease == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pWT_GetError GetError = (pWT_GetError)GetProcAddress(Hins, "WT_GetError");
	if (GetError == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pWT_SetRecogRect SetRecogRect = (pWT_SetRecogRect)GetProcAddress(Hins, "WT_SetRecogRect");
	if (SetRecogRect == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}
	CString strPath;
	pDlg->GetDlgItem(IDC_EDIT_PATH)->GetWindowText(strPath);

	CDC *pDC = pDlg->GetDC();
	pDC->SetBkMode(TRANSPARENT);

	LOGFONT logfont;
	memset(&logfont, 0x0, sizeof(logfont));
	logfont.lfHeight = 13;
	logfont.lfWeight = FW_NORMAL;
	logfont.lfCharSet = GB2312_CHARSET;
	wcscpy_s(logfont.lfFaceName, _T("宋体"));
	CFont font;
	font.CreateFontIndirect(&logfont);
	CFont* poldFont = pDC->SelectObject(&font);
	pDC->SetTextColor(RGB(21, 106, 161));

	if (InfoInit(0x11,0x1,true))
	{
		pDlg->m_pShowView->GetSelectRect();
		USES_CONVERSION;
		for (vector<CString>::iterator iter=pDlg->m_vecPath.begin(); iter!=pDlg->m_vecPath.end(); ++iter)
		{
			if (!pDlg->m_pShowView->m_rcSelect.IsRectEmpty())
			{
				SetRecogRect(pDlg->m_pShowView->m_rcSelect.left, pDlg->m_pShowView->m_rcSelect.top, pDlg->m_pShowView->m_rcSelect.Width(), pDlg->m_pShowView->m_rcSelect.Height());
			}
			XTextInfo* pInfo = NULL;
			CString strTemp(strPath);
			strTemp += _T("\\");
			strTemp += *iter;

			CString strOut;
			strOut.Format(_T("正在识别:%s"), *iter);
			pDlg->m_strStatus = strOut;
			pDC->FillSolidRect(pDlg->m_rcStatus, 0xf7f7f7);
			if (!pDlg->m_strStatus.IsEmpty())
			{
				pDC->DrawText(pDlg->m_strStatus, pDlg->m_rcStatus, DT_LEFT);
			}
			pInfo = ExtractInfoEx(W2A(strTemp));
			int nErr = GetError();
			if (pInfo == NULL && nErr != 0)
			{
				::MessageBox(pDlg->m_hWnd, _T("解析错误！"), _T("提示"), MB_OK);
				FreeLibrary(Hins);
				pDC->SelectObject(poldFont);
				font.DeleteObject();
				pDlg->ReleaseDC(pDC);
				InfoRelease();
				pDlg->GetInfoFromOutput(NULL);
				return 0;
			}
			else if (pInfo == NULL && nErr == 0)
			{
				pDlg->GetInfoFromOutput(NULL);
				// 				strTemp = strTemp.Left(strTemp.ReverseFind('.')+1) + _T("txt");
				// 				if (!SaveInfoToTxt(strTemp))
				// 				{
				// 					
				// 					//Invalidate(FALSE);
				// 					//FreeLibrary(Hins);
				// 					//return;
				// 				}
			}
			else
			{
				pDlg->GetInfoFromOutput(pInfo);
				// 				strTemp = strTemp.Left(strTemp.ReverseFind('.')+1) + _T("txt");
				// 				if (!SaveInfoToTxt(strTemp))
				// 				{
				// 					//Invalidate(FALSE);
				// 					//FreeLibrary(Hins);
				// 					//return;
				// 				}

			}
			InfoRelease();
			strOut.Format(_T("正在释放:%s"), *iter);
			pDlg->m_strStatus = strOut;
			pDC->FillSolidRect(pDlg->m_rcStatus, 0xf7f7f7);
			if (!pDlg->m_strStatus.IsEmpty())
			{
				pDC->DrawText(pDlg->m_strStatus, pDlg->m_rcStatus, DT_LEFT);
			}

			pDlg->m_strStatus.Empty();
			pDC->FillSolidRect(pDlg->m_rcStatus, 0xf7f7f7);
		}
	}
	else
	{
		::MessageBox(NULL, _T("初始化失败!"), _T("提示"), MB_OK);
		FreeLibrary(Hins);
		pDC->SelectObject(poldFont);
		font.DeleteObject();
		pDlg->ReleaseDC(pDC);
		return 0;
	}
	pDC->SelectObject(poldFont);
	font.DeleteObject();
	pDlg->ReleaseDC(pDC);
	::MessageBox(NULL, _T("完成!"), _T("提示"), MB_OK);
	if (pDlg->m_nSelect >= 0)
	{
		CString strPath;
		pDlg->GetDlgItem(IDC_EDIT_PATH)->GetWindowText(strPath);
		strPath += _T("\\");
		strPath += pDlg->m_vecPath[pDlg->m_nSelect];
		if (GetFileAttributes(strPath) == 0xffffffff)
		{
			//m_pTextDraw->CleanStringVector();
			pDlg->GetDlgItem(IDC_EDIT_RESULT)->SetWindowText(_T(""));
			::MessageBox(NULL, _T("文件缺失，请重新识别并加载"), _T("提示"), MB_OK);
			return 0;
		}
		if (pDlg->m_pShowView->m_imgShow.IsNull())
		{
			pDlg->m_pShowView->LoadImage(strPath);
		}
		else
		{
			pDlg->m_pShowView->m_imgShow.Destroy();
			pDlg->m_pShowView->LoadImage(strPath);

		}

		if (pDlg->m_vecList.size() > pDlg->m_nSelect)
		{
			//m_pTextDraw->CleanStringVector();
			pDlg->GetDlgItem(IDC_EDIT_RESULT)->SetWindowText(_T(""));
			CString textTemp ;
			vector<LineInfo> *vecInfoTemp = &pDlg->m_vecList[pDlg->m_nSelect];
			for(vector<LineInfo>::iterator iter=vecInfoTemp->begin();iter!=vecInfoTemp->end();++iter)
			{
				if(iter==vecInfoTemp->begin())
				{
					textTemp = iter->strChars;
				}
				else
				{
					textTemp += _T("\r\n");
					textTemp += iter->strChars;
				}
			}
			pDlg->GetDlgItem(IDC_EDIT_RESULT)->SetWindowText(textTemp);
			//m_pTextDraw->SetVectorInfo(&m_vecList[m_nSelect]);
			pDlg->m_pShowView->m_vecLine = &pDlg->m_vecList[pDlg->m_nSelect];
		}

	}
	//pDlg->Invalidate(FALSE);
	FreeLibrary(Hins);
	return 0;
	
}

线程函数

线程函数创建完线程还没有退出，所以不应该这么快关闭句柄。你的这个问题应该是线程函数中调用 W2A 导致，如果m_vecPath 这个容器很大的话，W2A在频繁调用的时候会出现问题，导致的栈内存耗尽，所以保险的方式是用在频繁调用时用{}把w2a包起来，这样一退出就自动释放资源，所以你只要将 W2A 封装到一个函数里面调用，那就可以解决这个问题

yimao_44 2014-01-17

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引用 6 楼 VisualEleven 的回复:

线程函数中不要直接操作UI上的控件

为啥了那你的意思是我把这个线程函数进行分割一部分放在线程里面一部分放在线程外面

Eleven 2014-01-17

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线程函数中不要直接操作UI上的控件

yimao_44 2014-01-17

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UINT RecogFunc(LPVOID pParam)
{
	CBuildImageLibDlg * pDlg = (CBuildImageLibDlg *)pParam;
	if (pDlg->m_vecPath.size() <= 0)
	{
		::MessageBox(pDlg->m_hWnd, _T("请先加载图像!"), _T("提示"), MB_OK);
		return 0;;
	}

	TCHAR szPath[MAX_PATH];
	GetModuleFileName(AfxGetInstanceHandle(), szPath, MAX_PATH);
	CString strDir(szPath);
	strDir = strDir.Left(strDir.ReverseFind('\\')+1);
	SetCurrentDirectory(strDir);
	strDir += _T("TH-ImageOCR.dll");
	HINSTANCE Hins = LoadLibrary(strDir);
	if (Hins == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pInfoInit InfoInit = (pInfoInit)GetProcAddress(Hins, "WT_InfoInit");
	if (InfoInit == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pExtractInfo ExtractInfo = (pExtractInfo)GetProcAddress(Hins, "WT_ExtractInfo");
	if (ExtractInfo == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pExtractInfoEx ExtractInfoEx = (pExtractInfoEx)GetProcAddress(Hins, "WT_ExtractInfoEx");
	if (ExtractInfoEx == NULL)
	{
		int err = GetLastError();
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pInfoRelease InfoRelease = (pInfoRelease)GetProcAddress(Hins, "WT_InfoRelease");
	if (InfoRelease == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pWT_GetError GetError = (pWT_GetError)GetProcAddress(Hins, "WT_GetError");
	if (GetError == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}

	pWT_SetRecogRect SetRecogRect = (pWT_SetRecogRect)GetProcAddress(Hins, "WT_SetRecogRect");
	if (SetRecogRect == NULL)
	{
		::MessageBox(pDlg->m_hWnd, _T("加载识别库失败!初始化失败!"), _T("提示"), MB_OK);
		return 0;
	}
	CString strPath;
	pDlg->GetDlgItem(IDC_EDIT_PATH)->GetWindowText(strPath);

	CDC *pDC = pDlg->GetDC();
	pDC->SetBkMode(TRANSPARENT);

	LOGFONT logfont;
	memset(&logfont, 0x0, sizeof(logfont));
	logfont.lfHeight = 13;
	logfont.lfWeight = FW_NORMAL;
	logfont.lfCharSet = GB2312_CHARSET;
	wcscpy_s(logfont.lfFaceName, _T("宋体"));
	CFont font;
	font.CreateFontIndirect(&logfont);
	CFont* poldFont = pDC->SelectObject(&font);
	pDC->SetTextColor(RGB(21, 106, 161));

	if (InfoInit(0x11,0x1,true))
	{
		pDlg->m_pShowView->GetSelectRect();
		USES_CONVERSION;
		for (vector<CString>::iterator iter=pDlg->m_vecPath.begin(); iter!=pDlg->m_vecPath.end(); ++iter)
		{
			if (!pDlg->m_pShowView->m_rcSelect.IsRectEmpty())
			{
				SetRecogRect(pDlg->m_pShowView->m_rcSelect.left, pDlg->m_pShowView->m_rcSelect.top, pDlg->m_pShowView->m_rcSelect.Width(), pDlg->m_pShowView->m_rcSelect.Height());
			}
			XTextInfo* pInfo = NULL;
			CString strTemp(strPath);
			strTemp += _T("\\");
			strTemp += *iter;

			CString strOut;
			strOut.Format(_T("正在识别:%s"), *iter);
			pDlg->m_strStatus = strOut;
			pDC->FillSolidRect(pDlg->m_rcStatus, 0xf7f7f7);
			if (!pDlg->m_strStatus.IsEmpty())
			{
				pDC->DrawText(pDlg->m_strStatus, pDlg->m_rcStatus, DT_LEFT);
			}
			pInfo = ExtractInfoEx(W2A(strTemp));
			int nErr = GetError();
			if (pInfo == NULL && nErr != 0)
			{
				::MessageBox(pDlg->m_hWnd, _T("解析错误！"), _T("提示"), MB_OK);
				FreeLibrary(Hins);
				pDC->SelectObject(poldFont);
				font.DeleteObject();
				pDlg->ReleaseDC(pDC);
				InfoRelease();
				pDlg->GetInfoFromOutput(NULL);
				return 0;
			}
			else if (pInfo == NULL && nErr == 0)
			{
				pDlg->GetInfoFromOutput(NULL);
				// 				strTemp = strTemp.Left(strTemp.ReverseFind('.')+1) + _T("txt");
				// 				if (!SaveInfoToTxt(strTemp))
				// 				{
				// 					
				// 					//Invalidate(FALSE);
				// 					//FreeLibrary(Hins);
				// 					//return;
				// 				}
			}
			else
			{
				pDlg->GetInfoFromOutput(pInfo);
				// 				strTemp = strTemp.Left(strTemp.ReverseFind('.')+1) + _T("txt");
				// 				if (!SaveInfoToTxt(strTemp))
				// 				{
				// 					//Invalidate(FALSE);
				// 					//FreeLibrary(Hins);
				// 					//return;
				// 				}

			}
			InfoRelease();
			strOut.Format(_T("正在释放:%s"), *iter);
			pDlg->m_strStatus = strOut;
			pDC->FillSolidRect(pDlg->m_rcStatus, 0xf7f7f7);
			if (!pDlg->m_strStatus.IsEmpty())
			{
				pDC->DrawText(pDlg->m_strStatus, pDlg->m_rcStatus, DT_LEFT);
			}

			pDlg->m_strStatus.Empty();
			pDC->FillSolidRect(pDlg->m_rcStatus, 0xf7f7f7);
		}
	}
	else
	{
		::MessageBox(NULL, _T("初始化失败!"), _T("提示"), MB_OK);
		FreeLibrary(Hins);
		pDC->SelectObject(poldFont);
		font.DeleteObject();
		pDlg->ReleaseDC(pDC);
		return 0;
	}
	pDC->SelectObject(poldFont);
	font.DeleteObject();
	pDlg->ReleaseDC(pDC);
	::MessageBox(NULL, _T("完成!"), _T("提示"), MB_OK);
	if (pDlg->m_nSelect >= 0)
	{
		CString strPath;
		pDlg->GetDlgItem(IDC_EDIT_PATH)->GetWindowText(strPath);
		strPath += _T("\\");
		strPath += pDlg->m_vecPath[pDlg->m_nSelect];
		if (GetFileAttributes(strPath) == 0xffffffff)
		{
			//m_pTextDraw->CleanStringVector();
			pDlg->GetDlgItem(IDC_EDIT_RESULT)->SetWindowText(_T(""));
			::MessageBox(NULL, _T("文件缺失，请重新识别并加载"), _T("提示"), MB_OK);
			return 0;
		}
		if (pDlg->m_pShowView->m_imgShow.IsNull())
		{
			pDlg->m_pShowView->LoadImage(strPath);
		}
		else
		{
			pDlg->m_pShowView->m_imgShow.Destroy();
			pDlg->m_pShowView->LoadImage(strPath);

		}

		if (pDlg->m_vecList.size() > pDlg->m_nSelect)
		{
			//m_pTextDraw->CleanStringVector();
			pDlg->GetDlgItem(IDC_EDIT_RESULT)->SetWindowText(_T(""));
			CString textTemp ;
			vector<LineInfo> *vecInfoTemp = &pDlg->m_vecList[pDlg->m_nSelect];
			for(vector<LineInfo>::iterator iter=vecInfoTemp->begin();iter!=vecInfoTemp->end();++iter)
			{
				if(iter==vecInfoTemp->begin())
				{
					textTemp = iter->strChars;
				}
				else
				{
					textTemp += _T("\r\n");
					textTemp += iter->strChars;
				}
			}
			pDlg->GetDlgItem(IDC_EDIT_RESULT)->SetWindowText(textTemp);
			//m_pTextDraw->SetVectorInfo(&m_vecList[m_nSelect]);
			pDlg->m_pShowView->m_vecLine = &pDlg->m_vecList[pDlg->m_nSelect];
		}

	}
	//pDlg->Invalidate(FALSE);
	FreeLibrary(Hins);
	return 0;
	
}

线程函数

yimao_44 2014-01-17

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xiug修改了放在析构函数里面还是有问题

w_xei 2014-01-17

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应该不是楼上说的句柄的问题，把你的线程函数代码贴出来看，估计是内存访问冲突的问题吧!

yimao_44 2014-01-17

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引用 1 楼 xiaoc1026 的回复:


void CBuildImageLibDlg::OnBnClickedButtonRecog()
{
    // TODO: Add your control notification handler code here
    m_pThrd = AfxBeginThread(RecogFunc,this,NULL,0,0,NULL);
    if( m_pThrd!= NULL)
    {
        m_ThreadHandle = m_pThrd->m_hThread;
        //不要这么快关闭句柄，你的线程还在运行！可以在对话框的析构函数里面关闭句柄
        //CloseHandle(m_ThreadHandle);
    }
 
}

可是线程函数执行结束的时候线程不就停止了吗

见习学术士 2014-01-17

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void CBuildImageLibDlg::OnBnClickedButtonRecog()
{
    // TODO: Add your control notification handler code here
    m_pThrd = AfxBeginThread(RecogFunc,this,NULL,0,0,NULL);
    if( m_pThrd!= NULL)
    {
        m_ThreadHandle = m_pThrd->m_hThread;
        //不要这么快关闭句柄，你的线程还在运行！可以在对话框的析构函数里面关闭句柄
        //CloseHandle(m_ThreadHandle);
    }
 
}

关于创建的线程执行完就崩溃的问题

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