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How to write a scalable Tcp/Ip based server
... to doubt these indicative figures.
IOCP versus thread-per-connection or 'select' primitives
The reason you want to use a mechanism that uses IOCP under the hood is that it uses a very low-level Windows thread pool that does not wake up any threads until there is actual data on the IO channel that...
Split string into an array in Bash
...omewhere after 2.05b):
echo "${array[@]: -1:1}"
Larger negative offsets select farther from the end of the array. Note the space before the minus sign in the older form. It is required.
share
|
i...
App Inventor 2 扩展 · App Inventor 2 中文网
...component to an extension using the App Inventor Extension Template.
This selection list some issues to keep in mind.
3.3.1 When you start to build
You can follow the method described above and begin by creating an ordinary component on a local instance of App Inventor, together with an app that ...
CGRidCtrl控件 学习心得 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
GVIS_FOCUSED
单元格成为焦点
GVIS_SELECTED
单元格被选中
GVIS_DROPHILITED
单元格被高亮显示
GVIS_READONLY
单元格只读
GVIS_FIXED
单元格固定
GVIS_FIXED...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...EASY_OK,则signal信号量，从而工作线程被唤醒。
典型的，select请求这种需要回复多个包给MySQL客户端的场景使用的都是这种模式
其它诸如只需要回复一个包给MySQL客户端的DML操作，例如INSERT,UPDATE等也使用这种模式，只是工作线程...
What is the list of supported languages/locales on Android?
...ble for application development (they may not necessarily be available for selection in a given device's system settings, though). When using ISO 639-1 codes, the resource folder has the format values-xx... where xx is the ISO-639-1 code.
When using BCP 47 tags, the resource folder is named valu...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个）。
reactor模式，实现自己的多路复用NIO机制（epoll，select，kqueue等）
单线程处理多任务
数据结构
hash+bucket结构，当链表的长度过长时，会采取迁移的措施（扩展原来两倍的hash表，把数据迁移过去，expand+rehash）
持久化存...
How does Google Instant work?
...ive. The search results are from the first autocomplete suggestion (or the selected one if you hit the down arrow or mouse over a suggestion).
In other words if I type "vinyl s", the first autocomplete suggestion is "vinyl siding," and the search results clearly show a search for "vinyl siding." If...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...ehashfn(net, daddr, hnum,
saddr, sport);
result = reuseport_select_sock(sk, hash, skb,
sizeof(struct udphdr)); //根据reuseport算法选择一个sock直接返回
if (result)
return result;
matches = 1;
}
result = sk; //使用最大分数的sk作为结...
Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
...
This approach will use the actual boolean type (and resolve to true and false) if the compiler supports it. (specifically, C++)
However, it would be better to check whether C++ is in use (via the __cplusplus macro) and actually use true and false.
In a C compiler, this i...