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内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...unistd.h>
void malloc_init()
{
/* grab the last valid address from the OS */
last_valid_address = sbrk(0);
/* we don't have any memory to manage yet, so
*just set the beginning to be last_valid_address
*/
managed_memory_start = last_valid_address;
/* Okay, we're initialized and rea...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...easy_list_for_each_entry_safe：
#define easy_list_for_each_entry_safe(pos, n, head, member) \
for (pos = easy_list_entry((head)->next, typeof(*pos), member), \
n = easy_list_e...
Ship an application with a database
...pp.Activity;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
/**
* @author Danny Remington - MacroSolve
*
* Activity for demonstrating how to use a sqlite database.
*/
public class Database extends Activity {
/** Called when the activity is first created. ...
What is the maximum length of a URL in different browsers?
...Ls are usually a
mistake. URLs over 2,000 characters
will not work in the most popular web
browsers. Don't use them if you intend
your site to work for the majority of
Internet users.
(Note: this is a quote from an article written in 2006, but in 2015 IE's declining usage means that longer URLs do ...
print call stack in C or C++
... linker
option. Note that names of "static" functions are not exposed,
and won't be
available in the backtrace.
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How can I transform between the two styles of public key format, one “BEGIN RSA PUBLIC KEY”, the oth
...s INTEGER, -- n
publicExponent INTEGER -- e
}
They chose to use the DER flavor of the ASN.1 binary encoding standard to represent the two numbers [1]:
SEQUENCE (2 elements)
INTEGER (2048 bit): EB506399F5C612F5A67A09C1192B92FAB53DB28520D859CE0EF6B7D83D40AA1C1DCE2C0720D15A0F5...
Reference: mod_rewrite, URL rewriting and “pretty links” explained
...ver works. A web server responds to HTTP requests. An HTTP request at its most basic level looks like this:
GET /foo/bar.html HTTP/1.1
This is the simple request of a browser to a web server requesting the URL /foo/bar.html from it. It is important to stress that it does not request a file, it re...
Python base64 data decode
...
(I know this is old but I wanted to post this for people like me who stumble upon it in the future)
I personally just use this python code to decode base64 strings:
print open("FILE-WITH-STRING", "rb").read().decode("base64")
So you can run it in a bash scrip...
Split string into an array in Bash
...by itself. It can't tell the difference between commas inside quotes and those outside them. You will need to use a tool that understands CSV such as a lib in a higher level language, for example the csv module in Python.
– Paused until further notice.
Sep 8 '1...
动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...于 21 世纪初诞生于 Solaris 操作系统，是由原来的 Sun Microsystems 公司的工程师编写的。可能很多同学都听说过 Solaris 系统和 Sun 公司的大名。
最初产生的时候，我记得有这样一个故事，当时 Solaris 操作系统的几个工程师花了几天...