io multiplexing methods, media, devices and operating systems

Abstract

Embodiments of the present invention provide an IO multiplexing method, medium, device and operating system. A listening thread in a kernel state receives a calling request of an application process, and the calling request includes identifiers of multiple kernel objects. The listening thread creates proxy information corresponding to multiple kernel objects, and binds the proxy information to multiple kernel objects correspondingly. The proxy information corresponding to each kernel object includes the event kernel object, and blocks the monitoring through the created event kernel object thread. After the event-triggering thread triggers an event corresponding to the triggered event identifier to the target kernel object, the listening thread is awakened through the event kernel object bound to the target kernel object. The listening thread obtains the triggered event identifier of the target kernel object, and sends the target kernel object identifier and the triggered event identifier to the application process. Through this solution, IO multiplexing of multiple kernel objects in the operating system can be realized.

Description

technical field [0001] The present invention relates to the technical field of operating systems, in particular to an IO multiplexing method, medium, device and operating system. Background technique [0002] IO multiplexing is a synchronous IO model, which realizes that a thread can monitor multiple file descriptors (Filedescriptor or file handle), and once a file descriptor is ready (usually read ready or write ready), it can notify The application process performs corresponding read and write operations. The traditional IO multiplexing mechanism is implemented by functions such as select, poll, and epoll. [0003] In some operating systems, all the underlying layers are shielded through the mechanism of the virtual file system (VFS for short), and users can operate on different files through a unified interface. For each file, a reference is required to indicate, At this time, the application of file descriptors is born. A file descriptor, in the form of a non-negative...

AI Technical Summary

Problems solved by technology

[0004] The IO multiplexing mechanism implemented by functions such as select, poll, and epoll belongs to the traditional IO multiplexing mechanism, and is only applicable to socket connections and applications using VFS mechanisms (such as block devices and character devices connected to VFS). scenarios, with application limitations

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