Read lock operation method, write lock operation method and system

Abstract

The embodiment of the invention discloses a read lock operation method, a write lock operation method and a system. The read lock operation method comprises the following steps: setting a private reference count corresponding to each of kernels; performing reading processes to the same data at threads of the different kernels; performing read lock locking and read lock unlocking operations to the private reference counts corresponding to the different kernels. With the application of the embodiments of the invention, the threads of the different kernels can be utilized to perform read operation to the same data, and the private reference counts corresponding to the kernels can be independently operated; the private reference counts corresponding to the different kernels are not required to be synchronized at each of the kernels, so that the execution efficiency is promoted; furthermore, the read lock expansibility can be improved; namely, no matter how many threads of the kernels are locked with read lock and unlocked from read lock, and the read lock locking time is barely prolonged, so that the execution efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of computer system structure, in particular to a read lock operation method, a write lock operation method and a system. Background technique [0002] A thread (thread), also known as a lightweight process (Lightweight Process, LWP), is a single sequence of control flow in a process, and serves as the smallest unit of program execution. In operating systems that introduce threads, processes are usually used as the basic unit of resource allocation, and threads are used as the basic unit of independent operation and independent scheduling. Threads can execute concurrently, for example multiple threads in a process can execute concurrently. Threads in different processes can also execute concurrently. In particular, in a computer system with multiple computing cores, such as a computer system with multiple CPU cores, threads of different cores can also be executed concurrently. [0003] When multi...

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Problems solved by technology

[0010] Like this, this method in the prior art, causes when multiple threads of different cores read the same data, because the communication between the cores will take a certain time, the atomic operation of changing the read_ref value in the corresponding cache of each core is It takes a certain amount of time, so the execution efficiency is low

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