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blocking method until a client link, otherwise the method is blocked. * If a client link, it will return the client's socket */SYSTEM.OUT.PRINTLN ("Waiting for the client to connect ..."); Socket socket=server.accept (); SYSTEM.OUT.PRINTLN ("Client Connected"); Receive message from client//inputstream input stream InputStream is = Socket.getinputstream (); into character streams ... InputStreamReader

lot of people have read the following question.Interrupts are an important part of an embedded system, which leads to a lot of compiler developers providing an extension-to let standard C support interrupts. The fact that it is represented is that a new keyword __interrupt has been produced. The following code uses the __interrupt keyword to define an interrupt service subroutine (ISR), please comment on this code.__interrupt Double Compute_area (dou

control all input and output of process (depending on the situation ), in this example, because javac is called and the prompt information is output to the standard error Without parameters, we need to process this in the following program. Import java. util .*;Import java. Io .*; Public class mediocreexecjavac{Public static void main (string ARGs []){Try{Runtime RT = runtime. getruntime ();Process proc = rt.exe C ("javac ");Inputstream stderr = Proc. geterrorstream ();Inputstreamreader

getcpurateforlinux () {inputstream is = NULL; inputstreamreader ISR = NULL; bufferedreader brstat = NULL; stringtokenizer Tok ENSTAT = NULL; try {system. out. println ("Get usage rate of cup, Linux version:" + linuxversion); Process = runtime.getruntime(cmd.exe C ("Top-B-N 1"); is = process. getinputstream (); ISR = new inputstreamreader (is); brstat = new bufferedreader (

line to receive the interrupt signal of the peripheral. int is responsible for connecting the INTR pin of the CPU to initiate an interrupt request to the CPU. Usually, the use of two 8259A chip Cascade, a connection to the CPU, called the main chip, and the other one connected to the main pic IR2 pin, called from the chip, so that a total of 8+7=15 peripherals can be connected. As shown in the following:In 8259A, by default the priority is the maximum interrupt request priority of the primary I

problem is the number of partition leader that are already hosted on the new leader server, and if there is too much partition leader on one server, it means that the server will be under more IO pressure. In the election of new leader, consideration should be given to "Load balancing". Common commands 1. Create topics ./kafka-topics.sh--create--zookeeper chenx02:2181--replication-factor 1--partitions 1--topic test 2. View Queue List ./kafka-topics.sh--list--zookeeper chenx02:2181 3. View qu

Original URL: http://blog.csdn.net/daniellee_ustb/article/details/7841894In the operating system, the processing of interrupts is always a nuisance, in fact, the operating system is not familiar with the interrupt management mechanism. When the interrupt is generated, the kernel executes the interrupt service ISR, the interrupt service program should do as little work as possible to improve the efficiency of the system execution, some people in the in

lot of people have read the following question.Interrupts are an important part of an embedded system, which leads to a lot of compiler developers providing an extension-to let standard C support interrupts. The fact that it is represented is that a new keyword __interrupt has been produced. The following code uses the __interrupt keyword to define an interrupt service subroutine (ISR), please comment on this code.__interrupt Double Compute_area (dou

the cluster.2. Kafka Cluster High Availability test1) View the status of the current topic:/kafka-topics.sh--describe--zookeeper 10.0.0.100:2181,10.0.0.101:2181,10.0.0.102:2181--topic testOutput:Topic:test partitioncount:2 replicationfactor:2 configs:Topic:test partition:0 leader:1 replicas:1,0 isr:0,1Topic:test partition:1 leader:0 replicas:0,1 isr:0,1As you can see, the leader of Partition0 is Broker1,pa

) ++;Printf ("A = % d, B = % d, c = % D, D = % d, e = % d", a, B, c, d, e );Return 0;}A) Write Program outputB) if the compiler arranges the layout of each variable (A, B, C, D) in the memory (eg. Stack, heap, datasection, BSS section), it is best to use a Graphical description.Answer: A = 2, B = 100, c = 2, D = 6, E = 5 2. interruption is an important part of embedded systems, which leads to many compilation developers to provide an extension: To interrupt Standard C support, a New Keyword _ in

.Consumer pulls data from leader only ISR: All replica collection, not backward has two meanings: distance from the last fetchrequest time is not greater than a certain value or backward message number is not greater than a certain value, leader failure will choose a follower from the ISR to do leader About replica replication details: Kafka Copy synchronization mechanism understanding 3. Data Reliability A

, Month:null, Day:null, Thedate:null, Getbit:function (M, n) { Return (M >> n) 1; }, E2c:function () { This. Thedate = (arguments.length!= 3)? New Date (): new Date (Arguments[0], arguments[1], arguments[2]); var total, M, N, K; var isend = false; var tmp = this. Thedate.getfullyear (); Total = (tmp-1921) * 365 + Math.floor ((tmp-1921)/4) + This.madd[this. Thedate.getmonth ()] + this. Thedate.g

thread reads the buffer data does not necessarily run out, so in this scenario, we need to wait to read the buffer data after the script executes, and then return the results. PS: This is my actual development encountered a problem, using the parent thread to wait for the way the child thread to achieve, can solve the problem, there is no other way, need to further try.The code is mainly as follows:Import Java.util.arraylist;import Java.util.list;public class executescript{public static void Ma

RX ISR to traverse packets describing token (reap). Some places call BD(Buffer descriptor), because it is hardware specific, so developers generally do not need to modify H/W descriptor data structure. The address of the DMA descriptor array hw_desc[] is the virtual address of the DMA map, which describes the token base site and needs to be configured in the relevant DMA registers of the SOC chip, such as the Ar9331datasheet DMARXDESCR (Pointer to Rx

the keyboard to the program. Use input (from external device to program for input, program to external device), * system.in (out) standard system input and output, do not need to close the stream. Otherwise, the stream closing error will be returned in the next test class */public static string Getstringkeyboard () {string Name= ""; InputStreamReader ISR = null; BufferedReader br = null; try {ISR