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Call Go functions from C
...unction that performs a pretty heavy task: It reads a list of files from a USB device. This can take a while, so we want our app to be notified of its progress. We can do this by passing in a function pointer that we defined in our program. It simply displays some progress info to the user whenever ...
Is calculating an MD5 hash less CPU intensive than SHA family functions?
...ider that a recent hard disk will run at about 100 MB/s, and anything over USB will top below 60 MB/s. Even though SHA-256 appears "slow" here, it is fast enough for most purposes.
Note that OpenSSL includes a 32-bit implementation of SHA-512 which is quite faster than my code (but not as fast as t...
廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...通过负载均衡设备对外提供WEB服务。怎么保证三台服务器中的数据一样呢?
1.1最开始的解决方案:
在其中一台服务器上开启NFS服务,其他两台服务器挂着NFS目录。所有非结构化和可变数据放在NFS目录里面。这样一来...
What is the difference between a port and a socket?
...ical connection point for peripheral devices such as serial, parallel, and USB ports. The term port also refers to certain Ethernet connection points, such as those on a hub, switch, or router.
ref http://compnetworking.about.com/od/basicnetworkingconcepts/l/bldef_port.htm
ref http://compnetworkin...
从Code Review 谈如何做技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时审查数百行程序码的审查速度太快,可能无法找到程序中的问题。代码审查一般可以找到及移除约65%的错误,最高可以到85%。
也有研究针对代码审查找到的缺陷类型进行分析。代码审查找到的缺陷中,有75%是和计算机安全隐...
Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...:
单引号里的任何字符都会原样输出,单引号字符串中的变量是无效的
单引号字串中不能出现单引号(对单引号使用转义符后也不行)
双引号
your_name='qinjx'
str="Hello, I know your are \"$your_name\"! \n"
双引号里可以有变量
...
NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...过ld链接脚本的处理并进行重定位之后,把每个目标文件中的各个section 放到可执行文件的一个section中,这个section我们通常叫它段(例如.text节重定位之后生成.text段,.data节重定位生成.data段等等),详细请参考ld manual
.data section(节...
libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...理下载文件。CURLOPT_WRITEDATA 用于表明CURLOPT_WRITEFUNCTION函数中的stream指针的来源。
3. CURLOPT_HEADERFUNCTION,CURLOPT_HEADERDATA
回调函数原型为 size_t function( void *ptr, size_t size,size_t nmemb, void *stream); libcurl一旦接收到http 头部数据后将调...
What is the purpose of the -m switch?
...leHTTPServer. Really handy when I need to share some files without using a usb flash drive.
– arifwn
Sep 30 '11 at 12:18
...
Mozilla PDF.js:PDF在线预览 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...pdf有关的参数
第一个问题:
我们只用修改viewer.js文件中的pdf路径参数即可:
var DEFAULT_URL = '09.pdf';
如果pdf文件与viewer.html不在一层目录中,改成相对路径即可:
var DEFAULT_URL = ' ../doc/ 09.pdf';
第二个问题:
viewer.html可以通...