Browser operating system design method for achieving service migration of heterogenous operating system
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A technology of operating system and design method, which is applied in the field of computer systems, can solve the problems of insufficient fast processing of the operating system, low security performance and low efficiency, and achieve the effect of quickly displaying and rendering web pages, improving access speed, and meeting system functional requirements
Inactive Publication Date: 2017-08-04
STATE GRID JIBEI ELECTRIC POWER COMPANY +4
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[0006] The purpose of the present invention is to provide a browser operating system design method that satisfies heterogeneous operating system business transplan
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Embodiment 1
[0067] combined with figure 1 As shown, a browser operating system design method that satisfies heterogeneous operating system business transplantation, the browser operating system adopts an operating system based on the Hurd system, and the browser operating system includes a process scheduler, a memory management program, and a device driver and the file system,
[0068] The implementation steps of the process scheduler include:
[0069] a) Trigger the process scheduler;
[0070] b) Compare process priority levels;
[0071] c) Suspend the execution of processes with lower priority levels;
[0072] d) Processes with higher priority enter the ready queue;
[0073] The memory management program is: memory process management, memory allocation, memory mapping and sharing support service functions;
[0074] The memory device driver is: an interface between the operating system kernel and the machine hardware, and the device driver shields the details of the hardware for the...
Embodiment 2
[0079] On the basis of Example 1, in conjunction with the attached figure 1 And attached image 3 As shown, the processes in the memory management program all run in the virtual address space, and the virtual address space is mapped to the physical memory through the page table.
Embodiment 3
[0081] On the basis of the above examples, combined with the figure 1 And attached image 3 As shown, the virtual address space includes kernel space, stack space, memory mapping address and heap, and the heap includes BSS segment, data segment and code segment.
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Abstract
The invention discloses a browser operating system design method for achieving service migration of a heterogenous operating system. A browser operating system is the operating system based on a Hurd system and comprises a process scheduling program, a memory management program, a device driving program and a file system, wherein the process scheduling program performs scheduling through a CPU according to the importance level of a process, the memory management program comprises memory process management, memory allocation and memory mapping and sharing, the memory device driving program is an interface for an operating system kernel and machine hardware, the device driving program shields details of the hardware for application programs, and the file system is responsible for file establishment, storage, reading, modification and file transfer and storage for a user and control of file access and revocation. In the memory management program, cookie management is performed, and the safety is improved. By adopting mapping between a virtual memory and a physical memory, the access and processing speed and efficiency of the browser operating system are improved.
Description
technical field [0001] The invention relates to the field of computer systems, specifically, a design method for a browser operating system that satisfies the service transplantation of heterogeneous operating systems. Background technique [0002] Chrome OS is an operating system designed and implemented by Google, which is installed on the netbooks launched by the company. The kernel of Chrome OS is implemented based on the Linux system, and its design core is networking. [0003] The architecture of Chrome OS can be divided into four layers, which are firmware layer, system software and user service layer, window manager and Chrome browser layer, and Web application layer from bottom to top. The lowest part is the firmware layer, its main function is to realize fast boot and restore system, and complete the system security authentication function. The firmware layer is realized from the hardware, which can make the system more secure and reliable, and also make the syst...
Claims
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