Recent questions tagged multithreading

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multithreading - Using C/Pthreads: do shared variables need to be volatile?

In the C programming language and Pthreads as the threading library; do variables/structures that are shared between ... a shared variable... 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 - Java: Swing Libraries & Thread Safety

I've often heard criticism of the lack of thread safety in the Swing libraries. Yet, I am not sure as to ... should I actively avoid doing ? 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 Subprocess.Popen from a thread

I'm trying to launch an 'rsync' using subprocess module and Popen inside of a thread. After I call the ... when running 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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multithreading - Doxygen is Slow

Doxygen takes about 12 hours to run on our code base. This is primarily because there is a lot of code to ... a lot more than 4 processes. 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 - Deadlock detection in Java

Long time ago, I saved a sentence from a Java reference book: "Java has no mechanism to handle ... understands a deadlock case occurred? 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 Do I Choose Between the Various Ways to do Threading in Delphi?

It seems that I've finally got to implement some sort of threading into my Delphi 2009 program. If ... adds that functionality into Delphi. 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 configure a fine tuned thread pool for futures?

How large is Scala's thread pool for futures? My Scala application makes many millions of future {}s and I wonder ... a thread pool. Thank you. 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 - Difference between the TPL & async/await (Thread handling)

Trying to understanding the difference between the TPL & async/await when it comes to thread creation. I believe ... essence, the UI 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 - Asynchronous IO in Scala with futures

Let's say I'm getting a (potentially big) list of images to download from some URLs. I'm using Scala, so ... it is? Thanks for your advice! 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 do I Understand Read Memory Barriers and Volatile

Some languages provide a volatile modifier that is described as performing a "read memory barrier" prior to ... implications of this answer? 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 are the differences between various threading synchronization options in C#?

Can someone explain the difference between: lock (someobject) {} Using Mutex Using Semaphore Using Monitor Using Other . ... two are the same? 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 a "thread" (really)?

I have been trying to find a good definition, and get an understanding, of what a thread really is. It ... is somewhat of a concrete thing. 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 make another thread sleep in Java

I have a class that extends Thread. This thread when running spends most of it's time sleeping, it will perform a ... T Thread: 28 T Thread: 29 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 - Java volatile modifier and synchronized blocks

Does a variable that is accessed by multiple threads, but only inside synchronized blocks, need the volatile modifier? If not, why? 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 - Cross-Thread operation not valid VB.NET

I looked around the site and the questions I found relating to this subject were for C# (the application that I am ... I do to fix this problem? 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 - OpenMP program on different hosts

I want to know if it would be possible to run an OpenMP program on multiple hosts. So far I only heard of programs ... I don't want to use MPI. See Question&Answers more detail:os...

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

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528 views

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multithreading - Run Java Threads sequentially

How will you execute Three threads sequentially? For eg. Thread1, Thread2, Thread3. It is not possible to pass ... is not an acceptable answer. 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 - why java security manager doesn't forbid neither creating new Thread() nor starting it?

do you happen to know explanation why java security manager doesn't forbid creating new threads or starting them? ... so relevant to forbid it? See Question&Answers more detail:os...

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

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615 views

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multithreading - throw: all goroutines are asleep - deadlock

Given the following simple Go program package main import ( "fmt" ) func total(ch chan int) { res := 0 for ... are asleep - deadlock! thank you 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 - Is changing a pointer considered an atomic action in C?

If I have a multi-threaded program that reads a cache-type memory by reference. Can I change this pointer by ... -platform answer 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 - Mutli-threading python with Tkinter

I'm drawing little circles on a canvas with these functions : This is the function that will draw the circles : ... me how to run these 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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469 views

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multithreading - How to get a faster speed when using multi-threading in python

Now i am studying how to fetch data from website as fast as possible. To get faster speed, im considering using ... can modify? thx a lot! See Question&Answers more detail:os...

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

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530 views

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multithreading - Number of threads used by Go runtime

How many threads can the Go runtime (scheduler, garbage collector, etc.) use? For example, if GOMAXPROCS ... order to have maximum performance? See Question&Answers more detail:os...

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

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565 views

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multithreading - Why does java.util.concurrent.ArrayBlockingQueue use 'while' loops instead of 'if' around calls to await()?

I have been playing with my own version of this, using 'if', and all seems to be working fine. Of ... should let the exceptions percolate up. 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 - Does WPF databinding marshall changes to the UI Thread?

I just noticed that when changing bound properties in my ViewModel (MVVM) from a background worker thread I do not get ... in 3.5 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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651 views

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multithreading - Python 3 Multiprocessing queue deadlock when calling join before the queue is empty

I have a question understanding the queue in the multiprocessing module in python 3 This is what they say in the ... for the deadlock is here? See Question&Answers more detail:os...

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

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601 views

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multithreading - C# manual lock/unlock

I have a function in C# that can be called multiple times from multiple threads and I want it to be done ... other (for more complex cases). See Question&Answers more detail:os...

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

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499 views

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multithreading - When does a Java Thread reach the 'Die' State

In Java, Die is one of the states on a thread. What causes a thread to enter this state? See Question&Answers more detail:os...

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

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