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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...提供了brk()系统调用，设置了Heap的上边界； 对 mmap 映射区域的操作,操作系 统 供了 mmap()和 munmap()函数。
因为系统调用的代价很高，不可能每次申请内存都从内核分配空间，尤其是对于小内存分配。 而且因为mmap的区域容易被mun...
Web Service vs WCF Service
...n WCF can be communicated with just as easily over SOAP/XML as it can over TCP/binary and to change this medium is simply a configuration file mod. In theory, this reduces the amount of new code needed when porting or changing business needs, targets, etc.
ASMX is older than WCF, and anything ASMX c...
what happens when you type in a URL in browser [closed]
...kes a DNS lookup and replies the IP address to the browser
browser opens a TCP connection to server (this step is much more complex with HTTPS)
browser sends the HTTP request through TCP connection
browser receives HTTP response and may close the TCP connection, or reuse it for another request
brows...
How to stop app that node.js express 'npm start'
...
you can try to use the lsof (list open files) command
$ sudo lsof -nPi -sTCP:LISTEN
and so
$ kill -9 3320
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How does the socket API accept() function work?
The socket API is the de-facto standard for TCP/IP and UDP/IP communications (that is, networking code as we know it). However, one of its core functions, accept() is a bit magical.
...
Where are my postgres *.conf files?
...srvname = 'postgres' # (Kerberos only)
#krb_caseins_users = off
# - TCP Keepalives -
# see "man 7 tcp" for details
#tcp_keepalives_idle = 0 # TCP_KEEPIDLE, in seconds;
# 0 selects the system default
#tcp_keepalives_interval = 0 # TCP_KEEPINTVL, in seconds;
...
redmine开源项目管理工具介绍 - 开源 & Github - 清泛网 - 专注IT技能提升
...踪标签的列出了每种类型大开的数量及总共的数量；成员区域列出该项目组的所以成员；新闻区域列出的最新新闻。
2.活动
该页面列出了该项目所以活动的历史记录，包括：问题、变更、新闻、文档、文件、Wiki编辑记录、帖...
zmq的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
zmq的使用请参考《ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信》想深入研究原理的请参考：《ZeroMQ的学习和研究（PHP代码实例）》请参考《ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信》
想深入研究原理的请参考：《ZeroMQ的...
memcmp memicmp区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
memcmp memicmp区别memcmp memicmp函数功能：比较内存区域buf1和buf2的前count个字节。memicmp同memcmp的唯一区别是memicmp不区分大小写字母。memcmp memicmp函数功能：比较内存区域buf1和buf2的前count个字节。用法同strcmp类似。
memicmp同memcmp的唯...
MFC非客户区完美自绘(标题栏，边框，标题按钮)例子 - C/C++ - 清泛网 - 专...
...好。绘制的时候用CWindowDC dc(this);，然后设置绘制的裁剪区域，按钮用Dui的思想绘制并封装成一个类CDUIButton，这样可以随便往标题添加任何按钮。
以上内容来自：http://bbs.csdn.net/topics/390624967
感谢原作者，源码下载：NCSkinDemo.ra...