Questions tagged [busy-waiting]
101 questions
1
vote
4 answers
Wait for system time to continue application
I've written a class to continue a started JAVA application if the current second is a multiple of 5 (i.e. Calender.SECOND % 5 == 0)
The class code is presented below, what I'm curious about is, am I doing this the right way? It doesn't seem like an…
saccu
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1
vote
2 answers
wont infinite loop waste cpu resource?
I am planning to use boost::lockfree::queue for my multi threaded application. A boost example illustrates lockfree queue consumption like this:
boost::atomic done (false);
void consumer(void)
{
int value;
while (!done) {
while…
rahman
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1
vote
1 answer
Alternative to Busy-Wait Structure Python
In a program I am writing, I have a small problem. I would like to be able to know when an element has been created but do not have access to the element's library. The library provides a function that returns True or False when it is finished and…
NAlex
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1
vote
1 answer
Threading and busy-waiting in scheme
I'm writing a scheme program that allows a user to create planets that follow gravitational laws. For the assignment, I have to alter the code to avoid busy waiting and also create a new thread for each planet, or every time that the mouse is…
user3408369
- 19
- 2
1
vote
1 answer
Go times out on sleep but not on busy-wait
In Go, I can use time.After to time out a sleeping function, but I can't do the same to a function that is busy-waiting (or working). The following code returns timed out after one second, and then hangs.
package main
import (
"fmt"
…
Matthew Piziak
- 3,430
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1
vote
2 answers
Using volatile boolean variable for busy waiting
The question arises after reading some codes written by another developers, so I did some research and I found article by Andrei Alexandrescu. In his article he says that it is possible to use volatile boolean variable for busy waiting (see the…
axe
- 2,331
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1
vote
2 answers
How can I write a C program to execute for a certain number of processor seconds?
I need a C program that would execute for a precise number of CPU seconds passed in as a parameter. I need such a program in order to test code that monitors a process' CPU usage.
Example:
busywait x
Should run for x seconds on my processor.
Will Brode
- 1,026
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1
vote
1 answer
how to wait effectively on a set of semaphore?
I'm using semaphores with shared-memory for communicating between multi-producers and multi-clients. There are two main kinds of semaphores in my system, which are "stored semaphores" and "processed semaphores".
The system run as following: …
khanhhh89
- 317
- 5
- 19
1
vote
2 answers
How to do things while the page is busy with asp.net?
I have an asp.net web application that when you click a button it excecutes all my stuff but it is slow it takes 10 to 15 seconds to work and i dont want users to spam click the button while the site is busy. So my plan was to disable the button and…
FLG
- 163
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0
votes
1 answer
CPU time sleep instead of wall-clock time sleep
Currently, I have the following Rust toy program:
use rayon::prelude::*;
use std::{env, thread, time};
/// Sleeps 1 seconds n times parallely using rayon
fn rayon_sleep(n: usize) {
let millis = vec![0; n];
millis
.par_iter()
…
Román Cárdenas
- 492
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0
votes
0 answers
Busy-waiting Future in Rust Tokio
I want to implement a Future that busy-waits on its completion.
According to this link, this is one option
impl Future for Delay {
type Output = &'static str;
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>)
-> Poll<&'static…
Samuel Hapak
- 6,950
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0
votes
4 answers
Inconsistent busy waiting time in c
I have a character that should "eat" for 200 microseconds, "sleep" for 200 microseconds, and repeat, until they die, which happens if they haven't eaten for time_to_die microseconds.
In the code snippet in function main indicated below, the struct…
kooru_hi
- 43
- 5
0
votes
1 answer
test_and_set makes the thread deadlock
#include
using namespace std;
int cnt=0;
int locked=0;
int test_and_set(int * lock){
int temp=*lock;
*lock=1;
return temp;
}
void cntOnes(int t){
while(test_and_set(&locked));
for(int i=0;i<2000;i++){
…
VEMBU KARTHICK T
- 29
- 2
0
votes
1 answer
Android: Wait for userinput but set a timeout
In my application the user is prompted with an exercise and he has 5 seconds to solve it, if he does not respond in time, the next exercise should be shown.
My question is: What would be the best way to implement such a behaviour in Android?
I have…
J.Doe
- 109
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0
votes
1 answer
Are Java synchronised method/statements and locks (e.g. re-entrant lock) busy waiting mechanisms?
I am learning concurrency in Java, and came to know about semaphores, which can be used for synchronisation without busy waiting.
Now, I'm wondering if Java synchronised method/statements and locks (e.g. re-entrant lock) are busy waiting…
Rajat Aggarwal
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