@forked-franz.bsky.social
Reposted
github.com/netty/netty/...
This is only needed for 4.1.x, in 4.2.x we are able to fix this in another way that does not require the usage of sun.misc.Unsafe
This is only needed for 4.1.x, in 4.2.x we are able to fix this in another way that does not require the usage of sun.misc.Unsafe
Re-enable sun.misc.Unsafe by default on Java 24+ by chrisvest · Pull Request #15296 · netty/netty
See https://github.com/netty/netty/wiki/Java-24-and-sun.misc.Unsafe for more information.
Motivation:
In #14943 we disabled Unsafe by default on Java 24+, to avoid producing warnings from the JVM. ...
github.com
June 3, 2025 at 8:48 PM
github.com/netty/netty/...
This is only needed for 4.1.x, in 4.2.x we are able to fix this in another way that does not require the usage of sun.misc.Unsafe
This is only needed for 4.1.x, in 4.2.x we are able to fix this in another way that does not require the usage of sun.misc.Unsafe
Reposted
❌ printf debugging
✅ segfault debugging
✅ segfault debugging
May 19, 2025 at 1:24 PM
❌ printf debugging
✅ segfault debugging
✅ segfault debugging
It is likely a way to observe the dynamic of the system.
Probably it is more actionable to have predicates applied to an analysis of the same events
Probably it is more actionable to have predicates applied to an analysis of the same events
May 14, 2025 at 7:59 PM
It is likely a way to observe the dynamic of the system.
Probably it is more actionable to have predicates applied to an analysis of the same events
Probably it is more actionable to have predicates applied to an analysis of the same events
It looks cdn.jsdelivr.net/npm/timeline... but I could be wrong
cdn.jsdelivr.net
May 14, 2025 at 10:08 AM
It looks cdn.jsdelivr.net/npm/timeline... but I could be wrong
Reposted
Was fighting a "LinkageError: attempted duplicate class definition" for 3 days... took me 2 seconds with that option!
May 13, 2025 at 3:09 PM
Was fighting a "LinkageError: attempted duplicate class definition" for 3 days... took me 2 seconds with that option!
Many thanks 🙏
May 11, 2025 at 3:09 PM
Many thanks 🙏
This is the JMC timeline or something different? 🙏
May 8, 2025 at 2:47 PM
This is the JMC timeline or something different? 🙏
Reposted
A modified version of this: github.com/rigtorp/MPMC...
GitHub - rigtorp/MPMCQueue: A bounded multi-producer multi-consumer concurrent queue written in C++11
A bounded multi-producer multi-consumer concurrent queue written in C++11 - rigtorp/MPMCQueue
github.com
May 3, 2025 at 7:41 PM
A modified version of this: github.com/rigtorp/MPMC...
Thanks for sharing! Yep, it is a refined version of www.1024cores.net/home/lock-fr...
I have designed an unbounded version of it which is more producer centric - and leverage x86 lock xadd - but very similar, in the core concept i.e. per-slot headers to independently track changes
I have designed an unbounded version of it which is more producer centric - and leverage x86 lock xadd - but very similar, in the core concept i.e. per-slot headers to independently track changes
1024cores - Bounded MPMC queue
According to the classification it's MPMC, array-based, fails on overflow, does not require GC, w/o priorities, causal FIFO, blocking producers and consumers queue. The algorithm is pretty simple and ...
www.1024cores.net
May 3, 2025 at 7:46 PM
Thanks for sharing! Yep, it is a refined version of www.1024cores.net/home/lock-fr...
I have designed an unbounded version of it which is more producer centric - and leverage x86 lock xadd - but very similar, in the core concept i.e. per-slot headers to independently track changes
I have designed an unbounded version of it which is more producer centric - and leverage x86 lock xadd - but very similar, in the core concept i.e. per-slot headers to independently track changes
Reposted
(We need the queue to be lock-free even though the kernel is single-threaded because we may want to schedule a task from an interrupt handler, and if the interrupt fires during a task schedule that held a lock on the queue, the kernel would deadlock)
May 3, 2025 at 9:08 AM
(We need the queue to be lock-free even though the kernel is single-threaded because we may want to schedule a task from an interrupt handler, and if the interrupt fires during a task schedule that held a lock on the queue, the kernel would deadlock)
Reposted
The idea is that I have a cooperatively-scheduled single-threaded OS kernel that uses C++20 coroutines as its means of expressing tasks.
I want to be able to await on asynchronous tasks, and also manually yield back to the scheduler in the case of long-running computations.
Some examples:
I want to be able to await on asynchronous tasks, and also manually yield back to the scheduler in the case of long-running computations.
Some examples:
May 3, 2025 at 8:46 AM
The idea is that I have a cooperatively-scheduled single-threaded OS kernel that uses C++20 coroutines as its means of expressing tasks.
I want to be able to await on asynchronous tasks, and also manually yield back to the scheduler in the case of long-running computations.
Some examples:
I want to be able to await on asynchronous tasks, and also manually yield back to the scheduler in the case of long-running computations.
Some examples:
Reposted
If anyone knows of resources for this, I am very much interested, as I am more or less fumbling around.
Getting a simple scheduler based on a lock free MPMC queue that works for basic coroutines was pretty straightforward, but as soon as those coroutines nest it becomes very headache-inducing.
Getting a simple scheduler based on a lock free MPMC queue that works for basic coroutines was pretty straightforward, but as soon as those coroutines nest it becomes very headache-inducing.
May 2, 2025 at 8:57 PM
If anyone knows of resources for this, I am very much interested, as I am more or less fumbling around.
Getting a simple scheduler based on a lock free MPMC queue that works for basic coroutines was pretty straightforward, but as soon as those coroutines nest it becomes very headache-inducing.
Getting a simple scheduler based on a lock free MPMC queue that works for basic coroutines was pretty straightforward, but as soon as those coroutines nest it becomes very headache-inducing.
Which mpmc one you used? Vjukov?
May 3, 2025 at 7:05 PM
Which mpmc one you used? Vjukov?