All Questions
Tagged with concurrency thread-safety
701
questions
-1
votes
0
answers
93
views
Capture of 'self' with non-sendable type 'Type?' in a `@Sendable` closure
I have a warnings 'Capture of 'self' with non-sendable type 'Type?' in a @Sendable closure' for this code
func launchPairingAtCorrectStepAfter(timeout: TimeInterval) {
Timer.scheduledTimer(...
1
vote
1
answer
129
views
Should I make my service Sendable? Issues with concurrency in Swift
I have multiple services implemented through protocols to be able to inject a mock service on initialization of ViewModels, and after enabling strict concurrency check I have many warnings "...
- 27
2
votes
1
answer
60
views
Java concurrency problem with enums and references
I'm having a concurrency problem when I update an object through an Enum's referenced field.
Code here on jdoodle and Github.
After setting the object's field, with the method Car#start through ...
- 330
0
votes
1
answer
51
views
C++ unordered_map thread safety when inserting indepentent keys
C++ Container thread safety guidelines at http://en.cppreference.com/w/cpp/container#Thread_safety
say
Different elements in the same container can be modified concurrently by different threads
So ...
- 881
0
votes
0
answers
65
views
Multiple Processes, Multiple Processors, Single Priority Queue - Java Thread-Safe and Concurrency -
Currently I am working on a Java question that is related to Java thread and concurrency. The thread should handles Multiple Processes, Multiple Processors and Single Priority Queue.
It has 5 main ...
- 11
1
vote
1
answer
59
views
Issues with Concurrent Execution and Synchronization in a Custom Java Caching Mechanism
I’m developing a custom caching mechanism for my Java application to cache objects that are expensive to create (e.g., database connections). The idea is to allow concurrent access to the cache while ...
0
votes
1
answer
31
views
Why is SpringApplicationBuilder.run made as thread-safe?
The following codes come from Spring Boot SpringApplictionBuidler. I know it uses double-checking to implement thread-safe. The question is that, is it necessary to make the run method thread-safe? ...
- 3
0
votes
1
answer
98
views
Different threads updating different attribute of the same object, will it work?
I have one method as follows:
public Book enrichBook(Book book) {
Long bookId = book.getId();
Thread t1 = new Thread(() -> book.setAuthors(authorService.findByBookId(bookId)));
Thread t2 = ...
- 95
0
votes
1
answer
123
views
How to avoid Duplicate Document Numbers for Invoice created through netsuite RESTAPI
I'm using Netsuite REST APIs to create invoices. The invoice document numbers (tranid) are auto-generated using Netsuite setup. All my APIs are implemented in AWS Lambda functions, which are ...
- 1
-1
votes
1
answer
493
views
In Rust, how to create a globally shared singleton with `OnceLock`?
Assuming that we need to define a singleton with global read access with thread safety, the canonical method is to use OnceLock:
/// A synchronization primitive which can be written to only once.
///
/...
- 4,028
-2
votes
2
answers
105
views
Are there any concurrency considerations if an object is passed to multiple asynchronous functions in C#? [closed]
So, I have a use case where I want to pass an object to async functions working concurrently. Each function will update different independent part of the object. So, my doubt is will this cause any ...
- 623
-1
votes
2
answers
65
views
Concurrently changing List<T> from multiple async functions in C#
So, I have a use case where I want to pass a list to async functions working concurrently. Each function will append their result to the list passed. So, my doubt is will this cause any concurrency ...
- 623
2
votes
2
answers
111
views
Bizarre concurrent behavior when I cast `ConcurrentDictionary` to an `IDictionary`
I have the following test:
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Threading.Tasks;
public class Program
{
public static void Main()
...
- 17.6k
0
votes
2
answers
116
views
gorm randomly returned nil for a count query
For paging purposes, we have two queries running concurrently, the main query fetches the items (limit to the page size) and the other query runs in a goroutine which queries the total count of items ...
- 63
0
votes
0
answers
50
views
How do I lock my C++ function based on a parameter such that other threads calling with that same parameter cannot access it
I am building a C++ Limit Order Book, with a very high focus on speed of execution, and would like to optimise my order matching function such that it can be accessed by multiple threads as ...
- 11