Tagged Questions

Multithreading is how work performed by a computer can be divided into multiple concurrent streams of execution (generally referred to as threads).

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1answer
8 views

Starting a thread from a void method

Using c++ I would like to start a thread from a void method and then return before the thread may have finished. for example: #include <thread> using namespace std; void longFunc(){ //stuff ...
6
votes
1answer
36 views

When performing a calculation - how many threads should I open?

I am writing a program that performs some long computation, which I can break into as many tasks as I want. For the sake of discussion, let's suppose I am writing an algorithm for finding whether or ...
2
votes
1answer
21 views

Multi-threading in Scala — dealing only with immutibility

I have the code of Scala class MyClass { private val myData: Map[String, MyClass2] = new HashMap[String, MyClass2]() def someMethod = { synchronized(myData) { val id = getSomeId ...
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votes
2answers
12 views

Win32 Uderstanding semaphore

I'm new to Multithread in Win32. And I have an assignment with Semaphore. But I cannot understand this. Assume that we have 20 tasks (each task is the same with other tasks). We use semaphore then ...
0
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1answer
15 views

Parallel Execution with pthread_cond_broadcast?

I would like to use pthread_cond_broadcast() to wake up all threads that is waiting for the same condition. However, it seems like those threads can't really run in parallel because they have to ...
0
votes
4answers
53 views

Killing child thread from parent thread in java

I am working in java android platform. I am creating a child thread from main thread. I want to stop child thread as my requirments. My child thread has simple function which doesn't have any loop. I ...
0
votes
1answer
46 views

Calling methods in main thread from other threads

I am trying to run 3 levels of timers at the same time in a C# application for example: T1 will run in the beginning of the application, then on its Tick event, T2 will start and then on the tick ...
0
votes
1answer
43 views

What's wrong with my while loop in Client?

I've got problem with loop. In my project I'm sending a comments from match through socket. I know that something is wrong with one of my loops because in client last comment is still printed. ...
0
votes
1answer
16 views

How to run separate threads in pygtk

I have a pygtk application which runs as soon as my python script is opened. Along with gtk.main() I have a thread which is started at the beginning of the script, which refreshes a gtk.TextView() ...
1
vote
1answer
23 views

How safely (thread-safe) alter global variable from indexedDB callbacks?

I am kicking off a bunch of indexeddb actions and want them to be able to increment a counter (and change some other things as well, but for this question, just assume it's incrementing a counter) ...
0
votes
1answer
22 views

How do I run a thread run() inside of the GUI's actionPerformed() method?

This is my first time doing multi-threading and I'm kind of stuck on how to make two threads, "Reader" thread and "Writer" thread execute only when the JButton "jbStart" is clicked? I can't put the ...
0
votes
0answers
32 views

how to return value from new Thread by ThreadManager.createThreadForCurrentRequest(new Runnable() gae java

there are 2 part . I am use google app engine java. 1, task Queue, to start 2 process 2, each process using ThreadManager.createThreadForCurrentRequest(new Runnable() { for 2 Thread I expect to set ...
2
votes
1answer
34 views

C# Local heaps for threads in multithread process

I have a multithread process in C#, and every thread quite often tries to allocate memory from the heap. This entails in multiple heap's locks and therefore reduces advantage from threading. Is there ...
0
votes
0answers
22 views

How to log into separate files per thread using EclipseLink

Scenario: Multi-threaded application that interacts with a relational database using EclipseLink JPA Implementation Desired: Having each thread to log SQL activity to a different file The ...
0
votes
1answer
21 views

Asynchronous Events Not Outputting to the Console

I just created my first multithreaded program, and it is not working. The following is the smallest complete program I could come up with that portrays what I am trying to do. Essentially, I created: ...

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