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Description: In a preemptive priority based RTOS, priority inversion
problem is among the major sources of deadline
violations. Priority inheritance protocol is one of the
approaches to reduce priority inversion. Unfortunately,
RTOS like uC/OS can’t support priority inheritance
protocol since it does not allow kernel to have multiple
tasks at the same priority. Although it has different ways
to avoid priority inversion such as priority ceiling
protocol, developers still have some difficulties in
programming real time applications with it. In this paper,
we redesign the uC/OS kernel to provide the ability to
support round robin scheduling and implement priority
inheritance semaphore on the modified kernel. As result,
we port new kernel with priority inheritance semaphore to
evaluation board, and evaluate the execution time of each
of the kernel service as well as verify the operations of
our implementation.
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Size: 135878 |
Author: 刘天宏 |
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Description: 操作系统时间片轮转法-OS time slice Round
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Size: 1024 |
Author: 王克迅 |
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Description: In a preemptive priority based RTOS, priority inversion
problem is among the major sources of deadline
violations. Priority inheritance protocol is one of the
approaches to reduce priority inversion. Unfortunately,
RTOS like uC/OS can’t support priority inheritance
protocol since it does not allow kernel to have multiple
tasks at the same priority. Although it has different ways
to avoid priority inversion such as priority ceiling
protocol, developers still have some difficulties in
programming real time applications with it. In this paper,
we redesign the uC/OS kernel to provide the ability to
support round robin scheduling and implement priority
inheritance semaphore on the modified kernel. As result,
we port new kernel with priority inheritance semaphore to
evaluation board, and evaluate the execution time of each
of the kernel service as well as verify the operations of
our implementation.-In a preemptive priority based RTOS, priority inversionproblem is among the major sources of deadlineviolations. Priority inheritance protocol is one of theapproaches to reduce priority inversion. Unfortunately, RTOS like uC/OS can t support priority inheritanceprotocol since it does not allow kernel to have multipletasks at the same priority. Although it has different waysto avoid priority inversion such as priority ceilingprotocol, developers still have some difficulties inprogramming real time applications with it. In this paper, we redesign the uC/OS kernel to provide the ability tosupport round robin scheduling and implement priorityinheritance semaphore on the modified kernel. As result, we port new kernel with priority inheritance semaphore toevaluation board, and evaluate the execution time of eachof the kernel service as well as verify the operations ofour implementation.
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Size: 135168 |
Author: 刘天宏 |
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Description: cpu scheduling
includin
First come first serve
round robin
and many more
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Size: 5120 |
Author: just |
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Description: 操作系统调度，进程处理策略模拟，
可以模拟Round Robin，FIFO，short job first等经典调度算法，也可以添加自定义的算法进行观察-OS schedule simulator
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Size: 625664 |
Author: liuv |
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Description: 模拟时间片轮转算法的程序，文件里有使用说明-Round Robin time slice simulation program, file with instructions
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Size: 359424 |
Author: 胡明 |
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Description: hello sir...here are some programs written in c++..for operating system..these are job scheduling programs to implement shortest job first, round robin algo..thank u sir-hello sir...here are some programs written in c++..for operating system..these are job scheduling programs to implement shortest job first, round robin algo..thank u sir
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Size: 3072 |
Author: monika |
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Description: 操作系统课设：进程
几种进程调度算法的实现：轮转调度时间片-Lesson set up the operating system: the process of implementation of several process scheduling algorithms: round robin scheduling time slice
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Size: 546816 |
Author: 李鹏飞 |
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Description: Realtime OS sistem design and structures. Smaphores, time slicing, round robin..et.c. Really clear documentation. Must have.Thanx Robert
cool:)
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Size: 1843200 |
Author: basrikul |
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Description: The round robin cpu scheduler program in os
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Size: 30720 |
Author: |
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Description: UCOS-III中支持了时间片的轮转调度，为了减少关中断的时间，
内核在对临界段的处理上使用了一些方法，比如为防止中断中访问
临界段代码，把中断的事情分两步来做，即中断中把对内核的操作
仅做保存，实际的操作推迟到一个称为OS_IntQTask中完成！这样
就可以在程序中使用禁止调度的方式来处理临界段的代码，也大大
减少了关中断的时间！但这并不意味着这种方法就是最优了，它是在
任务切换的消耗和关中断的时间来平衡的，所以UCOS-III也支持使用
关中断的方法！ -UCOS-III in support of a time slice of the round-robin scheduling, in order to reduce the interrupt off time, the kernel in the handling of the critical section using a number of methods, such as to prevent interruption in access to critical sections of the code, to break things in two steps do, that is to interrupt the operation of the kernel to do only save the actual operating postponed to a called OS_IntQTask done! This procedure can be used in a way against scheduling critical sections of code to deal with, but also greatly reduces the time to break off! But this does not mean that this method is optimal, and it is consumed in the task switching and interrupt time off to balance, so UCOS-III also supports the use of off interrupt method!
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Size: 7110656 |
Author: 比斌 |
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Description: Linux OS Java-based round-robin scheduling algorithm.
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Size: 2048 |
Author: hifi |
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Description: 操作系统的轮转算法和最短路径优先算法模拟-in OS ,be a model of RR(round robin) and the SPF(shortest process first) algorithm
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Size: 2048 |
Author: 赵俊飞 |
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Description: 用C语言实现操作系统时间片轮转算法，重要代码带有注释，清晰易懂-Operating system, round-robin algorithm, implemented in C and important code with annotations, clear and easy to understand
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Size: 1024 |
Author: adela |
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Description: 使用java语言或C++语言编程实现模拟操作系统进程调度子系统的基本功能；实现先来先服务、时间片轮转、多级反馈轮转法对进程进行的调度过程；掌握各个调度算法的特点。-Using java language or C++ programming language operating system simulation process scheduling subsystem basic functions achieve a first-come, first-served, the time slice rotation, multi-level feedback round robin scheduling process conducted by the process grasp the characteristics of various scheduling algorithms.
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Size: 900096 |
Author: jasonzjx |
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Description: 时间片轮转算法完成进程的调度。
设计要求：
1） 进程的调度采用时间片轮转算法。
2） 设计三个链队列，分别用来表示运行队列、就绪队列和完成队列。
3） 用户输入进程标识符以及进程所需的时间，申请空间存放进程PCB信息。
4） 输出的格式和上面的运行结果分析中的格式相同。
5） 写出程序，调试通过，并进行运行结果分析。
-Time slice rotation algorithm to complete the process of scheduling.
The design requirements:
1) process scheduling using round robin algorithm.
2) design of three link queue, are used to refer to the run queue, the ready queue and queue to complete.
3) the user input required process identifier and the process time, application space for storing process PCB information.
4) the running result output formats and the above analysis, in the same format.
5) write procedures, debugging through, and the analysis of the operation results.
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Size: 2048 |
Author: 李俊 |
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Description: raw-os实例之时间片轮转调度，操作系统时间片实验。-Time slice raw-os examples of round-robin scheduling, the OS time slice experiment.
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Size: 918528 |
Author: wuguangcheng |
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Description: 操作系统进程调度模拟实现算法,先到先服务调度(FCFS)
最短作业优先调度(SJF)
高响应比优先调度
（抢占式）优先权调度
时间片轮转调度-Operating system process scheduling simulation algorithm, first come first served scheduling (FCFS)
Shortest job first scheduling (SJF)
High priority response ratio scheduling
(Preemptive) Priority Scheduling
Round-robin scheduling
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Size: 1092608 |
Author: 庞清成 |
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Description: 操作系统实验代码 一：编写并调试一个模拟的进程调度程序，采用“最高优先数优先”调度算法对五个进程进行调度。
二：编写并调试一个模拟的进程调度程序，采用“简单轮转法”调度算法对五个进程进行调度。
编写和调试一个系统动态分配资源的简单模拟程序，观察死锁产生的条件，并采用银行家算法，有效地防止和避免死锁的发生。-OS experiment code one: write a simulation and debugging process scheduling procedures, " Priority number of the highest priority" scheduling algorithm for five scheduling process. Two: to write a simulation and debugging process scheduling procedures, " a simple round-robin" scheduling algorithm for five scheduling process. Compiling and debugging a system dynamic allocation of resources simple simulation program to observe the condition of deadlock, and using bankers algorithm to effectively prevent and avoid the occurrence of deadlock.
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Size: 3072 |
Author: hml |
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