A simple example of epoll/AIO/eventfd in combination _ sunfly _ Sina Blog
A simple example of epoll/AIO/eventfd(00:37:41)Reprinted tokenTags:EpollLibaioEventfdMiscellaneous# DEFINE _ gnu_source# DEFINE _ stdc_format_macros# Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Define test_file "aio_test_file"# Define test_file_size (127*1024)# Define num_events 128# Define align_size 512# Define rd_wr_size 1024Struct custom_ioc
,row_number () over (partition by T8. Fserialno ORDER BY t0.fdate Desc) xh from T_stk_instock t0Left joins T_stk_instockentry T1 on t0. FID =t1.fidINNER JOIN t_stk_instockserial T8 on T1. Fentryid=t8. Fentryid and Fserialnowhere convert (varchar), t0. fdate,21) =convert (varchar (ten), GETDATE () -1,21)) a where a.xh=1) b on T1.fid=b.fid and T4. Fserialno=b.fserialnowhere u.fname like '%xxx% ' and t6.fname like '%xxx% 'and CONVERT (varchar), T1. fdate,21) =convert (varchar), GETDATE () -1,21)--
the response content of the server and displaysint respint = Insr.read ();while (respint! =-1) {System.out.print ((char) respint);Respint = Insr.read ();}Import Java.io.FileInputStream;Import Java.security.KeyStore;Import java.security.cert.CertificateException;Import Java.security.cert.X509Certificate;Import Javax.net.ssl.TrustManager;Import Javax.net.ssl.TrustManagerFactory;Import Javax.net.ssl.X509TrustManager;public class X509TRUSTFORMSL implements X509trustmanager {/** The default X509trus
layer for handling service-to-service communication. Consists of a control plane and data plane (Service proxies act as "mesh"). -William Morgan, What ' s a Service Mesh? and Why do I Need one? (Https://dzone.com/articles/whats-a-service-mesh-and-why-do-i-need-one)
The above statement clearly indicates the responsibility of the service grid, which is to handle communication between services, which is the core of service governance. and a dedicated i
Original reference: Http://docs.osgearth.org/en/latest/developer/maps.html#programmatic-map-creationI have limited translation skills ...Loading Earth Map Fileosg::node* globe = osgdb::readnodefile ("myglobe.earth");The simplest wayAPI-Programmed Map creationThe basic steps for creating a map with the API are:1. Create a Map object2. Add the image layer and elevation layer where you think fit3. Create a mapnode that can draw "map objects"4. Add the Mapnode to the scene map.You can add layers to
database functions can also retrieve other attributes of processes, such as resource utilization and execution times.Wall Clock Time (wall clock time) is the elapsed timeUser CPU time (User CPU time) is the process spent in the execution user modeCodeTotal time onSystem CPU time is the total amount of time spent on executing kernel code.This information can be obtained through times or getrusage.Getrusage# Include Clock_t times (struct TMS * BUF );Ti
configation!Re:1: Use easyjtag v1.06;2: Select "erase when necessary" in JTAG configuration ".
4.Error 0x40001e00 is prompted in axd! Flash sector 0 write failed!Re:1. Use easyjtag to write External Flash. Note that the 16-bit bus mode is required and the sst39vf106 chip is required.2. If it is a self-built board, you must first debug it in the internal RAM to ensure that easyjtag is connected to the board.3. If there is external Ram, you must first pass (TEST) the external Ram to test the bus.
created ).ExecFamily functionsExecl/execlp/execle/execv/execvp/execveThe main difference between functions is the number of percentages. In this example, L indicates the list form, V indicates the pointer array form, e indicates the environment variable, and P indicates that the number of percentages indicates the relative path, it will be searched in the path.
Parent and Child Processes
The sub-process and the parent process share only the read text segment. For the BSS segment, the pair, and
$ this = $ (this); // var $ name = $ ("p. black strong ", $ this); var $ ding_num = $ (". ding_num ", $ this); // name of the book var name = $ name. text (); var ding_num = $ ding_num.text (); // ding_num = parseInt (ding_num); // var vote = new Vote (++ I, name, ding_num); allVote. push (vote) ;}); function desc (x, y) {if (x. ding_num> y. ding_num) {return-1;} else if (x. ding_num
Resource:
A new example of anti-DDOS test for ITEYE is added:
Instructions for use:
1. chrome first opens a
= 2 fi} # monitor service status ServerMonitor () {# service status monitoring timeout = 10 makfails = 2 fails = 0 success = 0 while true do/usr/bin/wget -- timeout = $ timeout -- tries = 1 http: // 192.168.20.84/-q-O/dev/null if [$? -Ne 0] then let fails = fails + 1 success = 0 else fails = 0 let success = 1 fi if [$ success-ge 1] then exit 0 fi if [$ fails- ge 1] then Critical = "TMS application service fault, please handle it urgently! "Echo $ Cri
processes running, and its value is related to the number of processes running at the same time in the system.
User CPU time: the time used to execute USER commands.
The system CPU time is the time that the kernel program lock has been executed for this process.
The sum of user CPU time and system CPU time is often referred to as CPU time.
# Include
Clock_t times (struct tms * buf );
Any process can call the times function to obtain the time values
getlogin function returns the login name of the user executing the program. Then the login name can be used as a parameterPass to the getpwname function to return a complete line of information in the/etc/passwd file corresponding to the login name. The other method is to pass the UID of the process to the getpwuid function, and also return to the/etc/passwd file.A suitable entry.# Include Char * getlogin (void );
# Include Struct passwd * getpwnam (const char * Name );3. Three independent time
with the Man 2, which is the stores of the "Times" () the "current process" in the "struct TMS" buf points to. The struct TMS is as defined in struct TMS {clock_t Tms_utime; /* User Time * *clock_t Tms_stime; /* System Time * *clock_t Tms_cutime; /* User Time of children * *clock_t Tms_cstime; /* System Time of children * *};The Tms_utime field contains the CPU
display all the environment variables of the current process: for (char ** p
Tr= Environ; * ptr! = 0; ptr ++) printf ("% s \ n", * ptr); after exec is executed, the process ID remains unchanged. In addition, the process executing the new program maintains the following features of the original process: • process ID and parent process ID. • Actual user ID and actual group ID. • Add group ID. • Process Group ID. • Dialog period ID. • Control terminal. • Remaining Time for the alarm. • Current wo
1. System DescriptionThe Teaching Management System (TMS) is an auxiliary teaching management system used by colleges within the university. Its main functions include the management of students' homework and teaching courseware.2. Scenario Description2.1 Teaching Management2.1.1 instructor publishing CoursewareTeacher Li Si is a teacher in Java programming. He uses the Powerpoint Courseware in class and explains the code in eclipse. After class, many
description
Take creating an index.html as an example to view the map page. Import openlayers. js and the JS you are about to create. The content requires a DIV, whose ID is called area. You need to write some CSS limitation # the width and height of area. If you are willing to add a border, it is also a good choice.
First, we need to create an openlayer. map object instance:
VaR map = new openlayers. Map ("area ");
The parameters can be passed by ID or elementobject, which is more convenient.
signals:
1. TDI
(Test data input)
2. TDO (side test data output)
3. TMS (select input in test mode)
4. TCK (test clock input)
5. trst (test reset input, this signal is optional)
TMS, tck, and trst constitute the border scan test port controller, which is responsible for testing the input, output, and Instruction Decoding of signal commands. the TAP controller is a 16-bit state machine, each step of
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