理解lock-free编程的关键在于，它不再使线程等待锁的释放。线程独立更新数据结构的局部副本，并通过CAS（Compare-And-Swap）操作原子性地更新共享结构。这样，程序可以避免长时间的等待，从而提高整体性能。在实际编程中，lock-free技术通过原子类型和原子操作实现。C/C++11标准库提供了原子类型、原子操作和内...
3. C/C++11中的lock-free编程 C11以及C++11以后,都开始支持原子类型、原子操作以及内存屏障,下面以C++为例,说明C++11在lock-free方面的支持。 3.1 原子类型及操作 std::atomic <type> var_name; type: the type of variable that can be of any primitive data type such as int, bool, char, etc. ...
Michael-Scott非阻塞队列(lock-free)算法的C实现 Michael-Scott非阻塞队列算法,即MS-queue算法,是1 9 9 6 年由Maged . M .Michael and M. L. Scott提出的,是最为经典的并发FIFO队列上的算法,目前很多对并发FIFO队列的研究都是基于这个算法来加以改进的。在共享内存的多核处理器上,这种基于Compare-and-swap(...
上源码 1 #ifndef __GLOBAL_LOCK_FREE_QUEUE_H__ 2 #define __GLOBAL_LOCK_FREE_QUEUE_H__ 3 4 #include <atomic> 5 #include <list> 6 7 #ifdef _WINDOWS 8 #inclu #include i++ #define #endif 原子操作 转载 mb5fdb0a1b25659 2017-11-18 17:57:00 ...
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rpmalloc - Cross platform lock free thread caching 16-byte aligned memory allocator implemented in C. [PublicDomain] snmalloc - Message passing based high-performance allocator. [MIT] TCMalloc - Google's fast, multi-threaded malloc implementation. [Apache-2.0] website buddy_alloc - A single heade...
读写锁(reader-writer lock):允许多个线程同时读共享数据,而对写操作是互斥的。 自旋锁(spin lock)与互斥锁类似,都是为了保护共享资源。互斥锁是当资源被占用,申请者进入睡眠状态;而自旋锁则循环检测保持者是否已经释放锁。 条件变量(condition):可以以原子的方式阻塞进程,直到某个特定条件为真为止。对条件的测试是...
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