摘要
提出了保护模式下实时操作系统实现内存管理的一种实现方案 ,改进了内存分配的边界标识算法 ,将内存块的控制信息和用户实际使用内存空间完全隔离 ,在分配算法中增加了搜索指针 ,提高了系统运行速度 .同时 ,采用虚拟存储器的管理方法 ,对内核空间和任务空间进行保护 ,并采用位图管理任务逻辑地址空间 .
The article gives a scheme for the memory management in Real Time Operating Systems under protection mode, and the boundary tag method for memory allocation algorithm is improved to increase system availability in this scheme. The physical memory block used by tasks is insulated from the corresponding control information. A search pointer in allocation process is added to the strut of control list of memory block to increase system performance in memory management module. The usage description for the concepts of virtual memory to protect system kernel memory space as well as task logical memory space is also given. The task′s virtual memory space is realized by using bit map algorithms. The scheme can efficiently improve the availability of Real Time Operating Systems and its performance.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第3期94-96,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
