你可能也注意到了,UE里面很多代码,包括LockFreeList的Allocator在预分配Block时,都会指定16384这样的大小,乘以整数倍正好就是L1的大小,这就是因为CPU访问一块内存时,很大概率也会访问周围连续的内存,对于连续内存的访问CPU是有做特殊优化的,可以显著降低cache miss的概率,那么从代码上直接来营造这样的环境,就可以显著提...
前言:最近阅读UE4源码多线程部分的时候发现有一个文件LockFreeList.h内的代码非常难以理解,查看了很多资料后才发现这里面原来大有玄机,触及了自己的一大技术盲区——并发编程,于是上网下了一本C++ Concurrency in Action, 2nd Edition,认真读完后再来看UE4的源码,有种豁然开朗的感觉,然后就趁着兴头写了这篇技术文章,...
A plurality of free list data structures are maintained in a multi-processor computing system that each correspond to one processor of the multi-processor computing system and that each comprise an ordered queue of processor-specific items. Thereafter, a number of processor-specific items allocated ...
Boost里面LockFree的代码主要分为:fressList.hpp, fresslist_base.hpp, queue.hpp,三个文件的详细注释如下: 代码语言:javascript 复制 /// 内存无锁管理类, pool始终指向freelist的第一个可消费节点template<typenameT,typename NodeStorage=freelist_storage<T>>classfreelist:NodeStorage{private:/// 内存操作磁头...
As software catches up to hardware, "64-bit-clean" lock-free data structures, which cannot use such techniques, are needed. We present several 64-bit-clean lock-free implementations: including load-linked/store conditional variables of arbitrary size, a FIFO queue, and a freelist. In addition...
从这个意义上来说,Lock-Free 中的 "Lock" 并没有直接涉及 Mutex 或 Lock 等互斥量结构,而是描述了应用程序因某种原因被锁定的可能性,例如可能因为死锁(DeadLock)、活锁(LiveLock)或线程调度(Thread Scheduling)导致优先级被抢占等。 Lock-Free 编程的一个重要效果就是,在一系列访问 Lock-Free 操作的线程中,如果...
As we explain shortly, it is based on a novel recursively split-ordered list structure. Our empirical testing shows that in a concurrent environment, even without multiprogramming, our lock-free algorithm performs as well as the most efficient known lock-based extensible hash-table algorithm due ...
lock-freedom for all the lock-free data structures no potentially harmful data races Here is a list of the tools we use to ensure them: safety: unitary tests andqchecktests check semantics and expected behaviors with one and more domains. ...
Blue Lock: Episode Nagi(2024) PG-13 91 min|Animation, Drama, Sport Edit pageAdd to list Track Seishiro Nagi before he enters the titular Blue Lock facility. Read more:Plot summary Director Shunsuke Ishikawa Writers Muneyuki Kaneshiro(manga)|Taku Kishimoto(script)|Yusuke Nomura(manga)|Kôta ...
Become a member to see MOVIEmeter and news information about Deadlock. Try IMDbPro Premium for free Status Edit Released Updated 1931-9-4 Release date 一月11, 1932 (United Kingdom) Contacts + Add Become a member to see contact information for Deadlock. Try IMDbPro Premium for free ...