spin control

Differences between semaphores and spin locks The spin lock does not cause the caller to sleep.If the spin lock has been maintained by another execution unit, the caller will keep repeating to check whether the lock holder has released the lock.

The cost of locking overhead locks is huge, especially for multicore multi-processing.The introduction of multi-processing, itself is to be parallelized processing to improve performance, however, because of the existence of a shared critical

Cost of LocksThe cost of locking is huge, especially for multicore multi-processing.The introduction of multi-processing, itself is to be parallelized processing to improve performance, however, because of the existence of a shared critical section,

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Transferred from: http://blog.csdn.net/goodluckwhh/article/details/9005585Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.Directory (?) [-] One per CPU variable Two-atom

Go to: http://blog.sina.com.cn/s/blog_6d7fa49b01014q7p.htmlMany people ask this question, what does the Linux kernel do to provide a variety of synchronization lock mechanisms? Traced is actually due to the existence of multiple processes in the

The various "Tasks" in the Linux kernel can see the kernel address space, so they also need synchronization and mutual exclusion. The synchronization/Mutex methods supported by the Linux kernel include: Technology Function Scope

Chapter 5 of the book "Understanding the Linux kernel in depth" describes kernel synchronization. When the kernel control path must access the shared data structure or enter the critical section, you need to obtain a "Lock" for yourself ". The

 Many people have been selling ERP software products and have received many trainings on sales methods, including c139, yongyou's "Strategy 9 q" and other methods, but in fact, some pioneers in the industry have created related sales methods, that

1. In response to the spin message, is the point spin the upper and lower key headers of the message, in this message change the value is 0.1 steps to increase or decrease.2. Use UpdateData (FALSE) to update the variables of the associated double