multithreading

问题 Can someone shed some light on it? An i7 processor can run 8 threads but I am pretty sure we can create more than 8 threads in a JAVA or C++ program(not sure though). I have an i5 processor and while studying concurrency I have created 10 threads for assignments. I am just trying to understand how Core rating of CPU is related to threads. 回答1: The thread you are refering to is called a software thread ; and you can create as many software threads as you need, as long as your operating system

问题 I'm a total node.js newbie who's just started tinkering with it. I have a piece of code that executes a function that processes strings on all cpu cores, and I wish to determine which worker completed the function first by it's id, and after that kill every worker (or just exit node). Here's the simplified code of my program: var cluster = require('cluster'), cpus = require("os").cpus().length, // 4 cores myArray = ["foo","bar","baz","qux"]; // 1 string per core if (cluster.isMaster) { for

问题 I'm a total node.js newbie who's just started tinkering with it. I have a piece of code that executes a function that processes strings on all cpu cores, and I wish to determine which worker completed the function first by it's id, and after that kill every worker (or just exit node). Here's the simplified code of my program: var cluster = require('cluster'), cpus = require("os").cpus().length, // 4 cores myArray = ["foo","bar","baz","qux"]; // 1 string per core if (cluster.isMaster) { for

问题 I am using LibGDX to make a game. I want to simultaneously load/unload assets on the fly as needed. However, waiting for assets to load in the main thread causes lag. In order to remedy this, I've created a background thread that monitors which assets need to be loaded (textures, sounds, etc.) and loads/unloads them appropriately. Unfortunately, I get the following error when calling AssetManager.update() from that thread. com.badlogic.gdx.utils.GdxRuntimeException: java.lang.RuntimeException

问题 I am working on a program to migrate files from potentially big directory structures and many of them (approx. 1 million). My migration code already works quite well, and I am using a class to iterate to the directory structure, identify the files to migrate them sequentially one after another. Now I want to make better use of the available CPU resources of the targeted machine, and do those migrations asynchronously grabbing threads from a System.Threading.TThreadPool to execute these. I

问题 I have an adapter and a spinner view which is set to use the adapter for it's entries. I'm adding items to adapter from a list of all files in /assets/ folder, I found that this task takes very long time (even about 2 seconds for a list of 2 files on a 1.5Ghz phone!). Then I came up to use a worker thread to gather my list and not block UI thread. here is my code: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.settings);

问题 I have an adapter and a spinner view which is set to use the adapter for it's entries. I'm adding items to adapter from a list of all files in /assets/ folder, I found that this task takes very long time (even about 2 seconds for a list of 2 files on a 1.5Ghz phone!). Then I came up to use a worker thread to gather my list and not block UI thread. here is my code: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.settings);

问题 I have an adapter and a spinner view which is set to use the adapter for it's entries. I'm adding items to adapter from a list of all files in /assets/ folder, I found that this task takes very long time (even about 2 seconds for a list of 2 files on a 1.5Ghz phone!). Then I came up to use a worker thread to gather my list and not block UI thread. here is my code: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.settings);

问题 I am trying to receive/send data at the same time, and my idea to doing this was import multiprocessing import time from reprint import output import time import random def receiveThread(queue): while True: queue.put(random.randint(0, 50)) time.sleep(0.5) def sendThread(queue): while True: queue.put(input()) if __name__ == "__main__": send_queue = multiprocessing.Queue() receive_queue = multiprocessing.Queue() send_thread = multiprocessing.Process(target=sendThread, args=[send_queue],)

问题 I am using redis in a heavily multi-threaded java application and getting intermittent ClassCastException s. Reading through various discussions seemed to point out this might be because the Jedis connection instance getting shared between multiple threads (https://github.com/xetorthio/jedis/issues/359). The solution suggested is to use JedisPool which is thread-safe. I have configured redis through Spring redis support by using RedisTemplate. A thing to note is I am using multiple templates