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扩展的动态内存机制
任务综述
本任务扩展了自己私有的内存管理机制。首先使用预先规划的思想，使用预先分配的内存池和内存分区，再通过使用消息队列作为内...
扩展的动态内存机制
任务综述
本任务扩展了自己私有的内存管理机制。首先使用预先规划的思想，使用预先分配的内存池和内存分区，再通过使用消息队列作为内存池的管理机制处理内存块分配与释放的过程，而消息队列中保存的是每个预先申请内存块的地址。当用户需要分配一个内存块时，使用msgQReceive() 函数从消息队列中获取一个相应大小的内存块地址；当用户需要释放一个内存块时，则使用msgQSend()函数将内存块首地址发送回消息队列中。通过这种方法，减少了内存反复申请与释放产生外部碎片的可能，并能够有效利用预先分配的思想减少内部碎片。同时也通过消息队列的特性实现了方便的内存块申请与释放的管理操作。
同时，本系统作为扩展的动态内存管理机制，引入了定制的内存分配与释放功能，使用了互斥机制保证操作安全性和一系列告警机制。在保证内存分配与释放安全有序的基础上，还增加了管理监视机制。
其系统具体实现参照系统实现部分。-none
- 2022-10-26 02:25:03下载
- 积分：1
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attention : 1. OS.jar Java package for two executable files. Due to the time and...
注意: 1. OS.jar为Java打包可执行文件 2. 由于时间,和界面空间问题,每个进程的资源拥有情况没有详细列明.如果要认真检查 程序的正确性,可以重新编译运行,然后查看Dos界 面下的输出.因为Dos界面下会输出 每个进程的资源情况(包括每个进程对每类资源的最大需求,分配情况,和所欠资源情况. 3. 资源设置中,进程设置应小于100个,资源类数应小于20个.-attention : 1. OS.jar Java package for two executable files. Due to the time and space interface, each process of the availability of resources, no details. If we were to check the correctness of procedures can recompile running, and then checking Dos interface output . because Dos output interface will process each of the resources (including each process for each category of the biggest resources demand, distribution, and outstanding resources. 3. resources set up, the process set up should be less than 100, the resource shall be less than 20.
- 2023-04-06 21:55:03下载
- 积分：1
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一个完整的rtos源代码.运行在嵌入80186 cpu上.提供4个任务,信号灯,定时器,schedule等....
一个完整的rtos源代码.运行在嵌入80186 cpu上.提供4个任务,信号灯,定时器,schedule等.-Byelorussian a complete source code. Running on embedded 80186 cpu. For four tasks, lights, timers, etc. schedule.
- 2022-06-16 15:48:26下载
- 积分：1
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WINCE寄存器读写工具源码
Wince对CPU寄存器的直接读写
方便驱动开发的朋友调试开发
- 2022-09-16 11:40:05下载
- 积分：1
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A user
A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running computation, block while waiting for an event, or read files from the file system. Unlike kernel drivers, a user-space device driver can use other device drivers--that is, access the network, talk to a serial port, get interactive input from the user, pop up GUI windows, or read from disks. User-space drivers implemented using FUSD can be much easier to debug it is impossible for them to crash the machine, are easily traceable using tools such as gdb, and can be killed and restarted without rebooting even if they become corrupted. FUSD drivers don t have to be in C--Perl, Python, or any other language that knows how to read from and write to a file descriptor can work with FUSD. User-space drivers can be swapped out, whereas kernel drivers lock physical memory.-A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running comput
- 2022-11-28 07:20:03下载
- 积分：1
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操作系统非常好的常用批处理文件，别错过哦。
操作系统非常好的常用批处理文件，别错过哦。-Very good operating system commonly used batch file, Oh Do not miss.
- 2022-07-03 20:16:16下载
- 积分：1
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请求页式管理中的置换算法
假设有一个用户进程P的地址空间为n（n=60）页，系统已在内存中给该进程分配有m（m
- 2023-01-30 14:15:04下载
- 积分：1
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Linux共享内存share memory通信机制的内核实现，可以为内核线程间通信提供机制...
Linux共享内存share memory通信机制的内核实现，可以为内核线程间通信提供机制-Linux shared memory communication mechanism share memory kernel realized, kernel threads can provide the mechanism for communication
- 2022-04-09 20:03:15下载
- 积分：1
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操作系统课程设计
操作系统课程设计(四实验和一)希望可以对你有帮助，以前自己找的！有些源码！还有实验报告，挺全的。希望对你有用！
- 2022-05-13 11:53:47下载
- 积分：1
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现在有很多的相机类型，和一些鱼
现在有很多相机类型，有的鱼眼相机照完的图片会发生畸变，为此，我们要进行鱼眼图片校正。本程序正是针对鱼眼图象的校正程序，里面有详细的注释说明相信只要是有一定的基础的人都能看懂。不过，还有差值部分没做完哪，有待完善。-Now have a lot of camera types, and some fish-eye camera images will be finished according to distortion, to that end, we have to carry out fish-eye image correction. This procedure is for fish-eye image correction program, which has detailed notes as long as it is believed that the basis of a certain person can understand. However, there is some difference which did not finish, remain to be improved.
- 2022-01-25 15:46:44下载
- 积分：1
