multithreading

问题 My app is basically a phone call over MultipeerConnectivity. Here is how I'm setting up the audio session: Note that recordingSession is of type AVAudioSession and captureSession is of type AVCaptureSession. func setupAVRecorder() { print("\(#file) > \(#function) > Entry") do { try recordingSession.setCategory(AVAudioSessionCategoryPlayAndRecord) try recordingSession.setMode(AVAudioSessionModeVoiceChat) try recordingSession.setPreferredSampleRate(44100.00) try recordingSession

问题 A multi-thread process written in C exhausts almost all of system memory. To find out the thread which is consuming most of the memory, I made a core file using gcore [pid] to check the memory usage per threads, but I can't find the way to do that. ps -eLFlm and top command with -H option shows the total memory consumption, but not per thread. Is there any useful tip to solve the problem? OS : Centos6 回答1: A multi-thread process written in C exhausts almost all of system memory. To find out

问题 A multi-thread process written in C exhausts almost all of system memory. To find out the thread which is consuming most of the memory, I made a core file using gcore [pid] to check the memory usage per threads, but I can't find the way to do that. ps -eLFlm and top command with -H option shows the total memory consumption, but not per thread. Is there any useful tip to solve the problem? OS : Centos6 回答1: A multi-thread process written in C exhausts almost all of system memory. To find out

问题 Caveat: I realize this is potentially a server configuration question, but I thought there might be a programmatic answer, which is why I am posting here... Running PHP on Apache, our users were able to issue multiple concurrent requests (from different tabs in the same browser, for example). Since moving to FastCGI under IIS, this is no longer the default behavior. Now, when a user starts a request to the server and the browser is waiting for a response, if they open a new tab and start

问题 Ever since I discovered sockets, I've been using the nonblocking variants, since I didn't want to bother with learning about threading. Since then I've gathered a lot more experience with threading, and I'm starting to ask myself.. Why would you ever use it for sockets? A big premise of threading seems to be that they only make sense if they get to work on their own set of data. Once you have two threads working on the same set of data, you will have situations such as: if(!hashmap.hasKey(

问题 I have an async chain in my java code that i want to stop after a certain timeout so i created a threadPool with some threads and called the CompletableFuture like this ExecutorService pool = Executors.newFixedThreadPool(10); than i have a cyclic method that loads data from the db and executes some task on it, once all the CompletableFutures are completed its doing it again CompletableFuture<MyObject> futureTask = CompletableFuture.supplyAsync(() -> candidate, pool) .thenApply(Task1::doWork)

问题 My understanding of the Swing Event Dispatcher Thread (EDT) is that its a dedicated thread where event handling code is executed. So, if my understanding is correct, then in the example below: private class ButtonClickListener implements ActionListener{ public void actionPerformed(ActionEvent e) { // START EDT String command = e.getActionCommand(); if( command.equals( "OK" )) { statusLabel.setText("Ok Button clicked."); } else if( command.equals( "Submit" ) ) { statusLabel.setText("Submit

问题 Here's an example with worker thread that takes ~600ms on local machine for synchronous I/O: const fs = require('fs'); const { isMainThread, Worker, parentPort, workerData } = require('worker_threads'); const filename = './foo.txt'; if (isMainThread) { (async () => { console.time('!'); await new Promise((resolve, reject) => { const worker = new Worker(__filename, { workerData: filename }); worker.on('message', resolve); worker.on('error', reject); worker.on('exit', (code) => { if (code !== 0)

问题 In my code I loop though raw_input() to see if the user has requested to quit. My app can quit before the user quits, but my problem is the app is still alive until I enter a key to return from the blocking function raw_input() . Can I do to force raw_input() to return by maybe sending it a fake input? Could I terminate the thread that it's on? (the only data it has is a single variable called wantQuit ). 回答1: You can use this time out function that wraps your function. Here's the recipe from

问题 In my code I loop though raw_input() to see if the user has requested to quit. My app can quit before the user quits, but my problem is the app is still alive until I enter a key to return from the blocking function raw_input() . Can I do to force raw_input() to return by maybe sending it a fake input? Could I terminate the thread that it's on? (the only data it has is a single variable called wantQuit ). 回答1: You can use this time out function that wraps your function. Here's the recipe from