Multitask switching execution method based on single process, multitask switching execution system based on single process and processor

Abstract

The invention provides a multitask switching execution method based on a single process, a multitask switching execution system based on the single process and a processor. The method comprises the steps that a task waiting queue set is set, wherein the task waiting queue set comprises at least one task waiting queue; a task execution queue set is set, wherein the task execution queue set comprises at least two priority lists; a host process obtains task execution units in each priority list according to the priority sequence, and executes actions in the obtained task execution unit; when no task execution units exist in the task execution queue set, the host process obtains a task from the task waiting queue set, and adds the obtained task to the priority list in the corresponding level to be continuously executed. The multitask switching execution method, the multitask switching execution system and the processor have the advantages that the seamless switching among multiple tasks and the multitask execution management are realized by the single process; the starting of multiple processes is not needed; the resource sharing management synchronization mechanism required by multiple processes is also omitted; a large number of resources is saved.

Description

technical field [0001] The invention belongs to the technical field of computers, and relates to a task execution method, in particular to a single-process-based multi-task switching execution method, system and processor. Background technique [0002] A process is a running activity of a program with certain independent functions on a certain data set, and a process is an independent unit for the system to allocate and schedule resources. The multitasking realized in the prior art is to open several threads in the process, and each thread corresponds to a task, finally realizing multitasking execution. A thread is an entity of a process and the basic unit of CPU scheduling and dispatching. It is a basic unit that is smaller than a process and can run independently. The thread itself basically does not own system resources, but only has some essential resources in operation (such as program counter, a set of registers and stack), but it can share all resources owned by the ...

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a multi-task switching execution method, system and processor based on a single process, which is used to solve the waste of the system by opening multiple threads to execute multiple tasks in the prior art. resource problem

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