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C++ Lock-free Hazard Pointer(冒险指针) - C/C++ - 清泛网 - 专注C/C++及内核技术

...可用 性能依赖 TLS 性能敏感 / 读多写少 C++ 标准中提供了锁和引用计数方案。锁的缺点很明显,无论是哪种锁,在读的时候都会产生较大的开销。引用计数则相对好一些,但每次读取都需要修改引用计数,高并发场景...
https://www.tsingfun.com/ilife/tech/1244.html 

那些年 O2O创业我踩了十个坑 - 资讯 - 清泛网 - 专注C/C++及内核技术

...周边社区洗衣店的价格相持平,甚至略高于他们;洗涤也无需跑到中央工厂,直接拿到客户的衣服就到旁边的洗衣店去,哪怕洗衣店给你的价格比你收到的价格还要高;市场推广也不会派送礼品,只吸引有正常需求的人加粉。这...
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How to enable PHP's openssl extension to install Composer?

... It is possible that WAMP and Composer are using different PHP installations. Composer will use the PHP set in the PATH environment variable. If you want to enable the openssl extension to install Composer, first you need to check the location of the PHP installation. Open a Comm...
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Where can I find php.ini?

A few years ago I installed Apache 2.2x and PHP 5.3.1 on a Linux server I maintain. I used .tar.gz's and built them as instructed (instead of rpms and what-have-you). And all was fine. ...
https://www.tsingfun.com/it/tech/896.html 

Android微信智能心跳方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... 3.1 GCM特点 a)Android2.2以下的手机不支持GCM,2.2到3.0需要安装Google Store并设置Google帐号,4.04及以上版本不需要设置帐号也能支持。 b)GCM只传递数据(可以传递小于4kb的数据),对这些数据的处理可以全部由开发者控制。 c)An...
https://www.tsingfun.com/it/tech/2282.html 

window+nginx+php-cgi的php-cgi线程/子进程问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

window+nginx+php-cgi的php-cgi线程/子进程问题见bbshttp: bbs csdn net topics 390803643 close正常的配置情况下,window的php-cgi是不会出现多线程 子进程的,例如以下配置fastcgi_pass 见bbs http://bbs.csdn.net/topics/390803643/close 正常的配置情况下,window...
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来自微软的一手内幕:Windows 10是怎么出炉的 - 创意 - 清泛网 - 专注C/C++及内核技术

...够喜爱、渴求Windows系统,才会去升级,也才会有大量的安装基数来吸引更多开发者。因此,也是压力山大。 Myerson表现得自信而不自傲——他很乐意拿我的MacBook来打趣。他的这种直率,也正反映在了发布Windows 10的方式上:甚...
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Apache is downloading php files instead of displaying them

... The correct AddType for php is application/x-httpd-php AddType application/x-httpd-php .php AddType application/x-httpd-php-source .phps Also make sure your php module is loaded LoadModule php5_module modules/mod_php55.so Whe...
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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...

...mmap的阈值。 tcmalloc tcmalloc是Google开源的一个内存管理, 作为glibc malloc的替代品。目前已经在chrome、safari等知名软件中运用。 根据官方测试报告,ptmalloc在一台2.8GHz的P4机器上(对于小对象)执行一次malloc及free大约需要300...
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Upgrading PHP in XAMPP for Windows?

I would like to know how you upgrade PHP in Xampp for Windows? I tried to download the latest PHP version from the main PHP site but when I check (phpinfo) I still get that the previous version is still in use. ...