thread-local Questions
1
For a better understanding of this question, here is the code:
// code 1
#include <iostream>
#include <thread>
struct tls_test {
tls_test()
{ std::cout << "tls_test ctor\n...
Thanasi asked 25/6, 2023 at 2:39
1
In this case, i need to propagating some state like tracer/span or request context per request.
The jdk env is 21.0.1-preview.
I try to propagate any state between thread and virtual thread by a co...
Valse asked 26/12, 2023 at 8:10
1
Solved
I have code that works well in Java 8, but it doesn't work when I migrate it to Java 17. It involves ThreadLocal and CompletableFuture.runAsync.
Here are the classes:
public class UriParameterHandl...
Reducer asked 16/8, 2023 at 8:4
2
Solved
I have following situation: In a header "test.hpp" I define:
class ObjectA {
public:
ObjectA();
~ObjectA();
static ObjectA & get_A();
};
class ObjectB {
public:
~ObjectB();
sta...
Marva asked 21/8, 2018 at 17:40
6
My use of ThreadLocal
In my Java classes, I sometimes make use of a ThreadLocal mainly as a means of avoiding unnecessary object creation:
@net.jcip.annotations.ThreadSafe
public class DateSensit...
Nellynelms asked 13/12, 2012 at 3:49
2
Solved
JEP-425: Virtual Threads states that a new virtual thread "should be created for every application task" and makes twice a reference to the possibility of having "millions" of v...
Mclin asked 8/1, 2023 at 11:56
8
Solved
Does any one have an example how to do this? Are they handled by the garbage collector? I'm using Tomcat 6.
Presumptive asked 6/10, 2010 at 1:57
0
In video [1:23] Jose Paumard talks about why using ThreadLocal is evil; especially, if the code creates countless (virtual) threads.
Can we say the same thing for ThreadLocalRandom?
Should people ...
Tantalite asked 6/10, 2022 at 22:18
2
Solved
I'm building an interpreter with a garbage collector. I want a thread-local nursery region, and a shared older region. I am having trouble setting up the nursery. I have:
const NurserySize : usize ...
Millda asked 22/5, 2021 at 13:43
4
Solved
I'm having an issue where I'm creating a ThreadLocal and initializing it with new ThreadLocal . The problem is, I really conceptually just want a persistent list that lasts the life of the thread, ...
Logos asked 12/3, 2013 at 18:41
0
In order to copy the Spring RequestAttributes into an @Async thread, I have implemented a TaskDecorator bean, based on How to enable request scope in async task executor.
@Configuration
@EnableAsyn...
Icefall asked 11/6, 2022 at 23:24
6
Solved
In Python specifically, how do variables get shared between threads?
Although I have used threading.Thread before I never really understood or saw examples of how variables got shared. Are they sha...
Sordello asked 19/9, 2008 at 19:53
26
Solved
When should I use a ThreadLocal variable?
How is it used?
Turin asked 3/5, 2009 at 19:59
1
Solved
Use case
I have a gRPC+Guice based service application where for a particular call the code flow looks like: A -> B -> C and A -> X -> Y for a particular service request.
where, A = Top...
Distraught asked 27/7, 2021 at 17:13
3
Solved
Do Java ThreadLocal variables produce thread-local values if they are used as instance variables (e.g., in a method that generates thread-local objects), or must they always be static to do so?
As...
Faliscan asked 11/3, 2012 at 11:16
8
Solved
My limited understanding of ThreadLocal is that it has resource leak issues. I gather this problem can be remedied through proper use of WeakReferences with ThreadLocal (although I may have misunde...
Weisburgh asked 2/6, 2009 at 16:28
9
Solved
Like this.
struct some_struct
{
// Other fields
.....
__thread int tl;
}
I'm trying to do that but the compiler is giving me this error.
./cv.h:16:2: error: '__thread' is only allowed on var...
Termination asked 12/6, 2012 at 14:49
1
In JPA I want to utilize the PrePersist annotated method to perform some operations but rather than making the things it needs to implement the Singleton pattern (with getInstance() etc.) I was won...
Flaviaflavian asked 9/8, 2020 at 2:21
2
Solved
I need a thread local variable, ideally stored in a struct which currently stores most of my program's global state.
The first way I can see to do this is to use the thread_local! macro, however ...
Maag asked 6/4, 2020 at 23:14
1
How do the thread local variables in the Rust standard library work? I looked at the code, but got lost in indirection. It seems that there are different configurations for thread local storage, an...
Masturbation asked 19/11, 2019 at 20:15
2
Solved
As shown in this answer, clang from Xcode on Mac OSX does not support thread_local storage even with C++11 flags set. Even on the latest version, Apple LLVM version 7.0.0 (clang-700.1.76), Target: ...
Extramural asked 27/10, 2015 at 1:16
4
Will the contents that are stored in the ThreadLocal storage during an execution be cleared automatically when the thread is returned to ThreadPool (as would be expected) ??
In my application I am...
Aframe asked 19/5, 2015 at 14:24
3
Solved
Ubuntu 19 running inside Docker
GCC 8.3
Boost 1.69
Valgrind 3.14.0
When the application is shutting down Valgrind reports these 3 issues:
==70== Mismatched free() / delete / delete []
==70== at...
Cavanaugh asked 26/9, 2019 at 6:46
1
Solved
I have a variable in file tracker.hpp:
namespace TRIALS
{
static thread_local int a = -1;
}
I have another class in file called EMP in ema.hpp/ema.cpp
namespace Algo
{
class EMP
{
public:
...
Catholicism asked 7/10, 2019 at 13:2
4
Solved
I am using thread locals to store the current user and request objects. This way I can have easy access to the request from anywhere in the programme (e.g. dynamic forms) without having to pass the...
Epidiascope asked 12/7, 2010 at 9:21
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