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服务器保持大量TIME_WAIT和CLOSE_WAIT的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...的处理方法混为一谈,以为优化系统内核参数就可以解决问题,其实是不恰当的,优化系统内核参 数解决TIME_WAIT可能很容易,但是应对CLOSE_WAIT的情况还是需要从程序本身出发。现在来分别说说这两种情况的处理方法: 1.服务...
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C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术

...继承。虚继承的引入本就是为了解决复杂结构的继承体系问题。上一篇我们在讨论虚继承时用的是一个简单的继承结构,...这次我们看看菱形结构的虚继承。虚继承的引入本就是为了解决复杂结构的继承体系问题。上一篇我们在...
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warning C4996 - c++1y / stl - 清泛IT社区,为创新赋能!

...可能会产生诸如内存泄露、缓冲区溢出、非法访问等安全问题。这些函数如:strcpy、strcat等。对于这些问题,VC2005建议使用这些函数的更高级的安全版本,即在这些函数名后面加了一个_s的函数。这些安全版本函数使用起来更有...
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MFC中使用CSplitterWnd分割窗口后视图大小的问题 - C++ UI - 清泛IT社区,为创新赋能!

使用CSplitterWnd对框架窗口进行分割之后需要根据需求设置每个分割窗口的大小,但是在通过createView(...)设置大小时,往往起不到想要的结果。 CSize sizeDummy; m_wndSplitterH.CreateStatic(this, 2, 1); if (!m_wndSplitterH.CreateView(0, 0, RUNTIME_CLASS(CGr...
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C++字符串截断时中文的处理问题(中文被截断怎么处理?) - c++1y / stl - ...

// 防止后台错误消息中汉字双字节被截断出现乱码 if (pRspMsg->RspMsg.buf[pRspMsg->RspMsg.Length() - 2] & 0x80)          pRspMsg->RspMsg.buf[pRspMsg->RspMsg.Length() - 2] = 0; 一个字节和0x80与运算(& 0x80 )是否...
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Are PHP include paths relative to the file or the calling code?

I'm having trouble understanding the ruleset regarding PHP relative include paths. If I run file A.PHP- and file A.PHP includes file B.PHP which includes file C.PHP, should the relative path to C.PHP be in relation to the location of B.PHP, or to the location of A.PHP? That is, does it matter whic...
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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...经常死机,登陆到终端看了一下,都是常见的 Out of memory 问题。这通常是因为某时刻应用程序大量请求 最近有位 VPS 客户抱怨 MySQL 无缘无故挂掉,还有位客户抱怨 VPS 经常死机,登陆到终端看了一下,都是常见的 Out of memory 问...
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PHP_SELF vs PATH_INFO vs SCRIPT_NAME vs REQUEST_URI

I am building a PHP application in CodeIgniter. CodeIgniter sends all requests to the main controller: index.php . However, I don't like to see index.php in the URI. For example, http://www.example.com/faq/whatever will route to http://www.example.com/index.php/faq/whatever . I need a reliable...
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PHP passing $_GET in linux command prompt

...you will use either argv global variable or getopt: // bash command: // php -e myscript.php hello echo $argv[1]; // prints hello // bash command: // php -e myscript.php -f=world $opts = getopt('f:'); echo $opts['f']; // prints world $_GET refers to the HTTP GET method parameters, which are u...
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Get the current script file name

If I have PHP script, how can I get the filename from inside that script? 16 Answers 1...