Method and system for running interrupt service in user space

Abstract

The invention discloses a method for running an interrupt service in a user space. The method comprises the following steps of: 1, sending interrupt information to be registered of the user space to a kernel space; 2, registering the interrupt information to be registered in the kernel space, initializing a communication system between the kernel space and the user space, and storing an entry address of an interrupt service program corresponding to the interrupt information to be registered into the user space; 3, circularly waiting for an interrupt inform in the user space; 4, when the interrupt comes, sending the interrupt inform by the kernel space to the user space through the communication system; 5, running the corresponding interrupt service program through the entry address of theinterrupt service program in the user space; and 6, finishing running of the interrupt service program and returning to the step 3. By the method, an interrupt articulation process and the interrupt service program can be run in the user space, so that an interrupt service program writer does not need to know a kernel mechanism of an operating system well, and the writing difficulty of the interrupt service program is reduced.

Description

technical field [0001] The invention relates to the field of computer application technology, in particular to a user space interrupt service method and system. Background technique [0002] Computer systems widely use interrupt mechanisms in response to external events. The operating system kernel provides interrupt service routines for commonly used peripherals, and at the same time provides a kernel mechanism that allows users to hook user-defined service routines to specific peripheral interrupts. However, the hooking process Both the interrupt service program and the service program must run in the kernel space, so the interrupt service program writer must have a deep understanding of the operating system kernel mechanism. In addition, due to the wide variety of peripherals, the addressing of internal registers is different, and the methods of clearing, enabling and shielding interrupts are also different. Similarly, it is very difficult to write the interrupt service r...

AI Technical Summary

Problems solved by technology

[0002] Computer systems widely use interrupt mechanisms in response to external events. The operating system kernel provides interrupt service routines for commonly used peripherals, and at the same time provides a kernel mechanism that allows users to hook user-defined service routines to specific peripheral interrupts. However, the hooking process Both the interrupt service program and the service program must run in the kernel space, so the interrupt service program writer must have a deep understanding of the operating system kernel mechanism. In addition, due to the wide variety of peripherals, the addressing of internal registers is different, and the methods of clearing, enabling and shielding interrupts are also different. Similarly, it is very difficult to write interrupt service routines, and the kernel has a high risk of instability

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