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_ Stdcall and _ cdel

parameter table. Second, the start ID of the parameter table is different. Public) the member function identifier is "@ Qae", the Protection (protected) member function identifier is "@ IAE", private) the member function identifier is "@ AAE". If the function declaration uses the const keyword, the corresponding identifier should be "@ QBE ", "@ IBE" and "@ Abe ". If the parameter type is a reference of a class instance, "aav1" is used. For a reference of the const type, "abv1" is used ". 11. v

Object-Oriented Design law-Rule 1: give priority to (object) combination, rather than (class) Inheritance

: FAccording to the reference (By Reference) FAccording to the value (By Value) NC++ Allows inclusion based on values or references. NHoweverJava, Everything is an object reference! Advantages and disadvantages of Combination NAdvantages: FThe container class can only access the contained object through the interface. FThe black box is reused because the internal details of the contained object are invisible to the outside world. FGood installation. FImplementation is less depe

First little research Compilation

I tried to use the rdtsc command of Intel CPU to count the program. I checked the relevant information and found that the rdtsc command under GCC could not obtain the correct result, so I want to see how C's code is compiled into an assembly: In GCC, G ++-O main. s main. cpp-SMicrosoft's Cl compiler is like this: cl.exe/Fas main. cpp The compilation produced by GCC is in att format, while Microsoft is in Intel format. From the annotation point of vie

FFmpeg compiling issues

# Include Solution 2: Use-d1_stdc_constant_macros while compiling FFMPEG, or Cxxflags =-d1_stdc_constant_macros when compiling any project including FFMPEG Note that Linux and Mac-D are required. In visualstudio (I used 05), add _ stdc_constant_macros to Preprocessor Defintions. 4. How to locate (seek) videos by frame sequence number Because of compression, searching by frame number is not as convenient and straightforward as timestamp. The problem cannot be solved by workaround. The idea is

FFmpeg to H264 encoding format, moov (meta data) moved to the head, bit rate to do a certain compression, resolution also lowered

640*360-ab 48k-strict-2 Test_c4.mp4ffmpeg-i C:\Users\guestAdmin\Desktop\K empty Folder \a00000592c0b5b\20180610\img_20180610104643.mp4-c:v libx264 -B 600k-r 25-s 1280*720-ab 48k-strict-2 test_c5.mp4ffmpeg-i dreamitpossible.mp4-c:v libx264-movflags faststart-b 300k-r 25-s 640*360-ab 48k-strict-2 test_c5.mp4ffmpeg-i dreamitpossible.mp4-threads 8-c:v libx264-movflags FAs Tstart-b 300k-r 25-s 320*240-ab 48k-strict-2 test_c6.mp4--support side download si

"C language Common sense" mdk various section analysis __c language

" two small procedures are as follows:Program 1: int ar[30000]; void Main () { ... } Program 2: int ar[300000] = {1, 2, 3, 4, 5, 6}; void Main () { ... }Discovery Program 2 after compiling the. exe file is much larger than the program 1. The moment was puzzled, so the manual compilation, and using the/FAS compilation option to view their respective. asm, found in the program 1.asm AR is defined as follows: _BSS SEGMENT ? Ar@@3paha DD 0493e0h

XML illegal characters

When writing or reading an XML file, you need to be aware of filtering for illegal characters According to the standards of the consortium, the following 16 characters are not allowed to appear in the XML file, even if the x00-//x08x0b-//x0cx0e-//x1f So, you need to exclude characters from these 3-range segments can be used. NET, the Replace method of the Regex in the string is substituted for the characters in the 3-range segment, such as: String content = "as

Inline Assembler Basics

variable as well as the type, which you can use to obtain the length of the variable and the type in the c\c++: The *length operator can return the number of elements in an array of variables, and if returned to 1 it means that this is not an array of variables. The *size operator can derive the total length of a variable and a type. This value can also be evaluated by length and type product. The *type operator can derive the length of a variable and a type, unlike size, which returns the l

About spark running a streaming calculator for a period of time appears GC overhead limit exceeded

Recently, when upgrading a framework, it was found that the GC overhead limit exceeded error occurred at some point in time for a streaming computation program. This problem is certainly not enough memory, but the initial set of memory is enough ah, so a variety of memory optimization, such as the definition of the variable in the loop outside the body control, but found that only the interval of time to push back a bit. Still did not find the crux of the problem. Later analysis of the

Nginx+fastdfs+fastdfs-nginx-module Configuring Distributed File Storage

Key_namespace=fastdfs # When the last parameter is set to 1 or Yes (True/on is also possible), the namespace in Fastdht keep_alive=0 # with FAS TDHT Servers connection (whether it is a persistent connection) # The following is the configuration of HTTP is not much said Http.disabled=true http.domain_name= http.server_port=80 Http.trunk_siz E=256KB Http.need_find_content_type=true 3. Establish the root directory of tracker and storage # tracker Track

LNMP Compile and install (centos7+nginx1.9+mysql5.6+php5.5)

Tags: start inno rac Rod FAs NMP LNMP compilation Installation Lnmp Ada LNMP Compiling and installing # You need to configure IP first# The path of the package/usr/local/srcYum install-y libjpeg-devel libpng-devel freetype-devel curl-devel python-devel curl-devel gcc gcc-c++ bison-devel ncurs Es-devel lrzsz openssl-devel libjpeg-devel libpng-devel freetype-devel curl-devel python-devel curl-develYum install-y libxml2 libxml2-devel cmakeYum-y install O

Oracle 12c Multi-tenant CDB and PDB backup

Tags: tag NBA rman finish dir DB2 FAs fast NoteFirst, CDB backup 1.1 Backup CDB only To back up the CDB database only requires a user with SYSDBA or sysbackup permissions to connect to the CDB root environment, perform the backupdatabase root command to complete a backup of CDB, as follows:[[email protected] ~]$ Rman target/[Email protected] ~]$ mkdir/home/oracle/rmanback/rman> Backup Database root format= '/home/oracle/rmanback/db_%d_%u ';Rman-03002:

PHP Client for Mysql Binlog

Tags: length mysql-bin sof offset operator dump FAS lock Replicat PHP parsing MySQL Binlog, dependent on Mysql-replication-listener librarySee: Https://github.com/bullsoft/php-binlogInstall MySQL Replication Listener Https://github.com/bullsoft/mysql-replication-listener/archive/master.zip The source code, there is a bug in the Tcp_driver.cpp line No. 650: int Binlog_tcp_driver::set_position(conststd::stringunsignedlong position) {

Construction and configuration of LNMP server--nginx+mysql+php environment under Linux Debian

-memcache extension is installed on the command above, continue to install memcached:apt-get install memcachedAfter the installation is complete, you can use "php5-fpm-v" to view the PHP version.4. Installing NginxI installed the full expansion of Nginx (Nginx-full), the rear may have functional enhancements, so when the installation is installed directly all:apt-get install-y nginx-fullThen start the Nginx:Service Nginx StartAsk the address HTTP://IP, if you see the following, it means that you

PPTP VPN Server

Tags: TCP remote maintenance efault strong end-to-end DDR FAs SWA stability PPTP VPN server VPN OverviewVPN(full name virtual PrivateNetwork)(1) relying on the ISP and other NSP, in the public network to establish a dedicated data communication network technology, can provide security between enterprises or between the individual and the Enterprise data Transfer Tunnel service(2) The connection between any two points in the VPN does not have the end-t

Linux Command History detailed

history file (/root/.bash_history user's path)Echo $HISTCONTROL See how your history is saved:Ignoredups does not record the following repeated commands (only sequential Repeat commands are logged once)Ignorespace does not log commands that start with a blankIgnoreboth does not log commands that begin with whitespace, and successive repeats of commands are recorded only onceHow to: Modify the command history size in the cacheFirst step: Echo "histsize=10" >>/etc/profile (load variable into file

Configuration of hot Backup protocol HSRP

Configuration on R5: r5>en R5#conf T R5 (config) #inter f0/0 R5 (config-if) #ip address 192.168.10.10 255.255.255.0 Configure Port IP addresses R5 (config-if) #no shut R5 (config-if) #inter F0/1 R5 (config-if) #ip address 202.106.1.10 255.255.255.0 R5 (config-if) #no shut R5 (config) #inter f0/0 R5 (config-if) #standby 1 IP 192.168.10.1 hot backup virtual gateway R5 (config-if) #standby 1 priority 150 priority R5 (config-if) #standby 1 preempt preemption R5 (config-if) #standby 1 tr

GIT branch Management

. such as: release-1.2 feature Branches May branch off from: develop must merge back to: Develop Each feature development is based on the develop pull a new branch name can be: Dbg_username_featurename git checkout-b dbg_gyf_myfeature Develop After the feature development is complete, if you decide to release it in the next release, merge back to develop $ git checkout develop switched to branch ' develop ' $ git merge--no-ff dbg_gyf_myfeature Updating ea1b82a. 05e9557 (Summary of changes) $ git

Go The difference between sqlserver:exec and sp_executesql

Tags: vsx MSU optimizer He also Foo mac SIG FAs TSXMSSQL provides us with two commands for dynamically executing SQL statements, namely EXEC and sp_executesql. Typically, sp_executesql has the advantage of providing an input-output interface, while Exec does not. One of the biggest benefits is the ability to reuse the execution plan with sp_executesql, which provides execution performance (which I'll explain in more detail in a later example), and can

Linux under MongoDB Service installation

Tags: INIT.D data structure fas www BSP index etc enter auto Linux under MongoDB Service installation MongoDB is a database based on distributed file storage. Written by the C + + language. Designed to provide scalable, high-performance data storage solutions for Web applications. MongoDB is a product between a relational database and a non-relational database, and is the most versatile and most like relational database in a non-relational

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