Recent questions tagged Multithreading

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multithreading - How do I run a long-running job in the background in Python

I have a web-service that runs long-running jobs (in the order of several hours). I am developing this ... .daemon = True my_thread.start() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Can we have race conditions in a single-thread program?

You can find on here a very good explanation about what is a race condition. I have seen recently many people ... in a single thread program? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Are 64 bit assignments in Java atomic on a 32 bit machine?

If I have code like this - long x; x = 0xFFFFFFFFL; If i run this code on a 32 bit machine is it ... x, might get an incomplete/garbage value? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Write to a file from multiple threads asynchronously c#

Here is my situation. I would like to make writing to the file system as efficient as possible in my ... Reactive Extensions installed as well. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - How to use OpenGL ES on a separate thread on iphone?

The OpenGL ES rendering loop is placed on a separate thread in my iphone application. Everything goes fine except ... on a separate thread? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Python - appending to same file from multiple threads

I'm writing an app that appends lines to the same file from multiple threads. I have a problem in which some ... to get empty pathqueue.join() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Can I change the connection pool size for Python's "requests" module?

(edit: Perhaps I am wrong in what this error means. Is this indicating that the connection pool at my ... the connection pool for requests? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Python PySide and Progress Bar Threading

I have this code: from PySide import QtCore, QtGui import time class Ui_Dialog(object): def setupUi(self, Dialog) ... . Can anyone please help? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Python Global Interpreter Lock (GIL) workaround on multi-core systems using taskset on Linux?

So I just finished watching this talk on the Python Global Interpreter Lock (GIL) http://blip.tv/file/2232410. ... unlucky may take a while). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Understanding context in C# 5 async/await

Am I correct that async/await itself has nothing to do with concurrency/parallelism and is nothing more than ... WinForms, WCF, WPF)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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478 views

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multithreading - java thread reuse

I have always read that creating threads is expensive. I also know that you cannot rerun a thread. I see in ... do thread pools 'reuse' threads? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - C# multi-threading: Acquire read lock necessary?

Is it necessary to acquire a lock on a variable before reading it from multiple threads? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - How to "multithread" C code

I have a number crunching application written in C. It is kind of a main loop that for each value ... more similar mathematical operations) } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - What is the easiest way to parallelize a task in java?

Say I have a task like: for(Object object: objects) { Result result = compute(object); list.add(result); } ... be executed in a HTTP request. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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475 views

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multithreading - Python Threading inside a class

I recently started with python's threading module. After some trial and error I managed to get basic threading ... would run in a thread. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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409 views

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multithreading - Thread-safe cache libraries for .NET

Background: I maintain several Winforms apps and class libraries that either could or already do benefit from ... or after an expiration? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - C# : Monitor - Wait,Pulse,PulseAll

I am having hard time in understanding Wait(), Pulse(), PulseAll(). Will all of them avoid deadlock? I would ... you explain how to use them? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Which is more efficient, basic mutex lock or atomic integer?

For something simple like a counter if multiple threads will be increasing the number. I read that mutex locks ... efficient than the other. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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464 views

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multithreading - Why doesn't volatile in java 5+ ensure visibility from another thread?

According to: http://www.ibm.com/developerworks/library/j-jtp03304/ Under the new memory model, when thread A ... . How is this possible? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - Threading Best Practices

Many projects I work on have poor threading implementations and I am the sucker who has to track these down. ... a design pattern or something. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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533 views

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multithreading - Why should Java ThreadLocal variables be static

I was reading the JavaDoc for Threadlocal here https://docs.oracle.com/javase/1.5.0/docs/api/java/lang/ ... but the fields are static? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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488 views

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multithreading - ThreadFactory usage in Java

Can someone briefly explain on HOW and WHEN to use a ThreadFactory? An example with and without using ... understand the differences. Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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669 views

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multithreading - Static method behavior in multi-threaded environment in java

There's a simple stupid question that bother me and make several arguments in my mind. I want to throw ... inFileStr sent by multiple threads? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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712 views

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multithreading - How can I monitor the thread count of a process on linux?

I would like to monitor the number of threads used by a specific process on Linux. Is there an easy way ... the performance of the process? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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715 views

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multithreading - Qt C++ Displaying images outside the GUI thread (Boost thread)

I am developing a C++ library realizing its interface by means of Qt, using VS2015. On the library side, 3 ... Qt in a thread-safe manner? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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872 views

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multithreading - Prolog find all paths Implementation

I've been tasked to implement a version of findall in Prolog without using any Prolog built-ins except for ... would be much appreciated. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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950 views

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multithreading - Python Tkinter Label redrawing every 10 seconds

I have this following Python Tkinter code which redraw the label every 10 second. My question is , to me it ... cases i could use threading? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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876 views

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multithreading - QProgressBar not showing progress?

My first naive at updating my progress bar was to include the following lines in my loop which is doing the ... up the topic of threading. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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