wfstack.c ���CLV #define _GNU_SOURCE 1 #include <sched.h> // sched_setaffinity #include <stdint.h> #include <stdio.h> #include <limits.h> #include <stdlib.h> #include <stdint.h> #include <pthread.h> #include <assert.h> #include <sys/time.h> #include <urcu-qsbr.h> #define mb() asm volatile("" : : : "memory") #define mf() asm volatile("mfence" : : : "memory") //#define usleep(n) #define CACHELINE 64
Seastar is an advanced, open-source C++ framework for high-performance server applications on modern hardware. Seastar is used in Scylla, a high-performance NoSQL database compatible with Apache Cassandra. Applications using Seastar can run on Linux or OSv. Seastar is the first framework to bring together a set of extreme architectural innovations, including: Shared-nothing design: Seastar uses a
About Us News, articles, code snippets and more by the hakkers in the Akka community. Links: Akka Home Akka Docs In Akka 2, there is a nifty little thing called the BalancingDispatcher, which will magically distribute work to a collection of Actors in the most efficient way possible (i.e. it’s a work stealing dispatcher). The SmallestMailboxRouter has this kind of feel as well. However, the Balanc
Don't use actors for concurrency. Instead, use actors for state and use futures for concurrency. A common practice I've seen in scala code is to use actors for concurrency. This is encouraged by Akka and a lot of writing about Scala, the documentation of which is highly actor-centric. I assert that this is a bad practice and should be considered an antipattern most of the time it is used. Actors s
There are not that many full-fledged lock-free queues for C++. Boost has one, but it's limited to objects with trivial assignment operators and trivial destructors, for example. Intel's TBB queue isn't lock-free, and requires trivial constructors too. There're many academic papers that implement lock-free queues in C++, but usable source code is hard to find, and tests even more so. This queue not
In a Nutshell CAF offers a high-level programming environment based on the Actor Model of computation combined with an efficient, native runtime environment that lets you build scalable applications. For example, software for molecular research, communication backends for distributed network security monitoring or even massive multiplayer online games. The framework is open source, available on Gi
Asynchronous I/O in Windows for Unix Programmers Ryan Dahl 2011-04-26 This document was an attempt at understanding how best to port Node.js to Windows. The result of the port was the library libuv, which (among other things) provides a unified interface for asynchronous networking on the three big operating systems: Linux, OSX, and Windows. This document assumes you are familiar with how non-bloc
All Elixir code runs inside lightweight threads of execution (called processes) that are isolated and exchange information via messages: current_process = self() # Spawn an Elixir process (not an operating system one!) spawn_link(fn -> send(current_process, {:msg, "hello world"}) end) # Block until the message is received receive do {:msg, contents} -> IO.puts(contents) end Due to their lightweigh
Comsat transparent concurrency for maximal http service scalability Comsat is a set of open source libraries that integrate Quasar with various Web or enterprise technologies (like HTTP services and database access). With Comsat, you can write web applications that are scalable and performant while, at the same time, are simple to code and maintain. You will enjoy the scalability of asynchronous s
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