zynga pool

+1Q.join ()#block until all data in a queue has been processedq.get () fetch message q.task_done ()#Count-1 after the get-to message has been processed, the queue is told after processing is finished#The queue can only hold the number of parameters set when the instantiation, the queue is not full will continue to put#use the. Task_done () after using Joinablequeue,get () so that the join on the put end of the queue will not block after the last call to Task_donemultiprocessing. Pipecon,pro= Pip

CodeWhen writing a crawler, performance is consumed primarily in IO requests, which inevitably cause a wait when the URL is requested in single-threaded mode, which slows down the overall request.ImportRequests fromConcurrent.futuresImportThreadpoolexecutor#Introducing thread pool modulesdefasyns_url (URL):Try: Response=requests.get (URL)exceptException as E:Print('Exception Results', Response.url,response.content)Print('Get Results', Response.url, re

Label:Tomcat used COMMONS-DBCP as the implementation of connection pooling in versions prior to 7.0, but there are some problems with DBCP:(1) DBCP is single-threaded, in order to ensure that the line Shuo plenary lock the entire connection pool(2) Poor performance of DBCP(3) DBCP is too complex, more than 60 classes, development lag.As a result, other high-performance connection pools, such as C3P0, and Druid of the Ali system, are often used in the

Open-ethereum-pooleth Mineral pool-payouts module Payoutsprocessor definitiontype PayoutsProcessor struct { config *PayoutsConfig backend *storage.RedisClient rpc *rpc.RPCClient halt bool lastFail error}Getpendingpayments principlefunc (r *RedisClient) GetPendingPayments() []*PendingPayment { //ZREVRANGE eth:payments:pending 0 -1 WITHSCORES raw := r.client.ZRevRangeWithScores(r.formatKey("payments", "pending"), 0, -1) var resul

Stpstartinfo stp = new Stpstartinfo (); Stp. Disposeofstateobjects = true; Stp. Calltopostexecute = Calltopostexecute.never; Stp. ThreadPriority = Threadpriority.highest; Stp. Usecallercallcontext = true; Stp. maxWorkerThreads = 4; Functional thread pool var smartthreadpool = new Smartthreadpool (); Perform task Smartthreadpool.queueworkitem (() = {//load the data log that needs to be processed.　　 Infoformat ("@-->excete data bar number {0}", Asynccal

OriginYou want to specify the thread pool where runnable executes, whether it is called in the UI thread or thread, anywhere in the code.Codes PackageCom.example.androidbackgroundexecuter;ImportJava.util.concurrent.Executor;ImportAndroid.os.Handler;ImportAndroid.os.HandlerThread;ImportAndroid.os.Looper;ImportAndroid.os.MessageQueue;/** * * @author Zheng haibo * @Web http://www.mobctrl.net * */ Public Final class globalexecutor implements Executor {

Fixed thread pool Demo and long thread pool demo 1 import java. util. concurrent. executorService; 2 import java. util. concurrent. executors; 3 4/** 5 * Description: 6*7 * @ author baozikengutou 8 */9 public class Test2 {10 11 public static void main (String [] args) {12 13 // create a fixed-length thread pool 14 ExecutorService fixedThreadPool = Executors. newF

Java thread pool (newSingleThreadExecutor () for small applications and java Thread Pool Create a single thread to operate an unbounded queue task without using additional threads. If the thread crashes, a new one will be created until the task is completed. Code: Import java. util. concurrent. executorService; import java. util. concurrent. executors; public class Threadd2 {public static void main (Stri

Android: Background thread pool and UiThread thread pool, androiduithreadOrigin You can specify the Thread pool where Runnable execution is executed in any part of the Code, whether called in the Ui Thread or in the Thread.Codes package com.example.androidbackgroundexecuter;import java.util.concurrent.Executor;import android.os.Handler;import android.os.HandlerTh

1. Small integer Object poolIntegers are used extensively in programs, and in order to optimize speed, Python uses a small integer pool of objects to avoid frequent application and destruction of memory space for integers.Python defines small integers as [-5, 256] These integer objects are set up well in advance and are not garbage collected. In a Python program, all integers that are in this range use the same object.Similarly, a single letter is the

When using the Java thread pool, the return value type is received with futurefutureThe returned result must be completed by the thread before it is returned, and we can take advantage of this to thread the Plug and monitor the end time of the thread.Package Com.test;import Java.util.arraylist;import java.util.list;import java.util.concurrent.callable;import Java.util.concurrent.executorservice;import Java.util.concurrent.executors;import java.util.co

Service side: fromSocketImport* fromThreadingImportThread fromConcurrent.futuresImportThreadpoolexecutordefCommunicate (conn): whileTrue:Try: Data=CONN.RECV (1024) if notData BreakConn.send (Data.upper ())exceptConnectionreseterror: Breakconn.close ()defServer (Ip,port, pool_size): Pool=threadpoolexecutor (pool_size) Server=socket (af_inet, Sock_stream) Server.bind ((Ip,port)) Server.listen (5) whileTrue:conn, addr=server.accept ()#T=t

Implement a simple thread pool yourselfpublic interface ThreadPoolImplementation classpublic class Mythreadpoll Beginner thread pool--1, implement a thread pool yourself

Create a thread pool in one method, then do a fragment upload file task, how many slices there are many threads Using Newsinglethreadexecutor to create, forgetting to call shutdown than the thread pool I thought it would be garbage collected even if it wasn't closed because the thread pool is the local variable created in the method However, non-daemon threads

Import Java.util.concurrent.ExecutorService; Import java.util.concurrent.Executors; Import Org.junit.Test; public class MyTest {@Test public void test1 () {//test1: The main thread will not exit until all threads in the threads pool have finished executing. Executorservice pool = Executors.newcachedthreadpool (); for (int i = 0; i Summarize: 1. When using ThreadPool, the first shutdown (no longe

C3P0 connection pool, DBCP connection pool, C3P0 connection pool: Profile: c3p0-config.xml Test: Data preparation: CREATE DATABASE mybase;USE mybase;CREATE TABLE users(uid INT PRIMARY KEY AUTO_INCREMENT,username VARCHAR(64),upassword VARCHAR(64));INSERT INTO users (username,upassword) VALUES("zhangsan","123"),("lisi","456"),("wangwu","789");SELECT * FROM users;V

High-concurrency epoll + thread pool, business in the thread pool-ehyyngp-chinaunix blog High-concurrency epoll + thread pool, with the business in the thread pool 21:48:49 Category:C/C ++ Epoll is a perfect solution for High-concurrency servers in Linux. Because it is triggered based on events, it is more th

Spring configuration tomcat JDBC Pool database connection pool