rhel atomic

[Reprint] C # Use Interlocked for atomic operations, Source article: Wang Xu blog» C # Use Interlocked for atomic operations What is an atomic operation? Atom is intended to be "the smallest particle that cannot be further divided", while atomic operation is "one or a series of operations that cannot be interrupted ".

2iSome years ago I started work on my first CUDA implementation of the Multiparticle collision Dynamics (MPC) algorithm, a Particle-in-cell code used to simulate hydrodynamic interactions between solvents and solutes. As part of the This algorithm, a number of particle parameters is summed to calculate certain cell parameters. This is in the days of the Tesla GPU architecture (such as GT200 GPUs, Compute Capability 1.x), which had poor atomic ope Rati

Atomic operation (1)-Atomic operation with Assembly "The most lightweight locks", often also called "atomic operations", are quoted because they are not atomic at the assembly level and are done with multiple instructions, mostly using the CPU-supported assembly instructions.In some architectures that are outdated CPU

[Disclaimer: All Rights Reserved. You are welcome to reprint it. Do not use it for commercial purposes. Contact Email: feixiaoxing @ 163.com] Atomic locks are a feature of multi-threaded programming. However, in normal software writing, there are not many atomic locks. There are many reasons for this. I think there are two main reasons. First, there are few introductions on

The Java.util.concurrent package (J.U.C) after Java5 is the work of the world-class concurrent Master Doug Lea, which mainly implements The corresponding atomic class of Integer/long in atomic package is mainly based on CAS; Some of the same steps, including Lock,countdownlatch,semaphore,futuretask, are based on the Abstractqueuedsynchronizer class; About the executors class of thread exec

Java. util. Concurrent. Atomic. Atomic * atomic class and volatile keyword are two common methods in Java to process data shared read/write under multiple threads. The two seem to be the same, but they are quite different in practical applications. The volatile keyword is a write lock implemented by local code. It only ensures that a thread is writing data. To sp

CAS atomic Operations--compare Set, or Compare Swap, now almost all CPU instructions support CAS atomic operations, X86 corresponding to CMPXCHG assembly instructions.You should remember the concept of "atomic manipulation" inside the operating system, where an operation is atomic (

Faster Atomic class: Longadder Everyone to the basic realization mechanism of the atomicinteger should be more understanding, they are in a dead loop, and constantly try to modify the target value, know the success of the modification, if the competition is not fierce, then the probability of successful modification is very high, otherwise, the probability of modification failure is very high, in a large number of changes failed, These

In this section, we begin to discuss array atomic operations and some other atomic operations.Atomicintegerarray/atomiclongarray/atomicreferencearray 's API is similar, select a representative atomicintegerarray to describe these issues.int get (int i)Gets i The current value of the position. Obviously, because this is an array operation, there is an index cross-boundary problem (Indexoutofboundsexception e

Atomic and nonatomic are used to determine whether the compiler-generated getter and setter are atomic operations. 　　Atomic When setting the @property property of a member variable, the default is atomic, which provides multithreading security. In a multithreaded environment, at