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JOS Lab 2: Memory Management
The first component is a physical memory allocator for the kernel, so that the kernel can allocate memory and later free it. Your allocator will operate in units of 4096 bytes, called pages. Your task will be to maintain data structures that record which physical pages are free and which are allocated, and how many processes are sharing each allocated page. You will also write the routines to allocate and free pages of memory.
The second component of memory management is virtual memory, which maps the virtual addresses used by kernel and user software to addresses in physical memory. The x86 hardware memory management unit (MMU) performs the mapping when instructions use memory, consulting a set of page tables. You will modify JOS to set up the MMU page tables according to a specification we provide.
- 2022-02-05 12:16:48下载
- 积分:1
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这个是大家学习jsp的好例程,希望大家多多支持!jsp+javabean+serverlet!...
这个是大家学习jsp的好例程,希望大家多多支持!jsp+javabean+serverlet!-Jsp to learn this is a good routine, I hope everyone can support! jsp+ javabean+ serverlet!
- 2022-07-07 03:09:45下载
- 积分:1
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An extract from the FileMon filter out keywords code can specify a keyword match...
一个从FILEMON中提取出来的关键字过滤代码,能对指定关键字进行匹配.-An extract from the FileMon filter out keywords code can specify a keyword match.
- 2022-06-20 20:24:50下载
- 积分:1
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采用伙伴系统算法进行内存管理的原码,可以最大限度的避免内存碎片,同时提高内存分配效率 。...
采用伙伴系统算法进行内存管理的原码,可以最大限度的避免内存碎片,同时提高内存分配效率 。-a partnership system memory management algorithm for the original code, the maximum memory to avoid the debris, while improving the efficiency of memory allocation.
- 2022-05-29 10:51:38下载
- 积分:1
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以实现的类:
XArray<T>
XDynamicArray<T>
开始实现XByteBuffer
1、定义好相关类的框...
以实现的类:
XArray
XDynamicArray
开始实现XByteBuffer
1、定义好相关类的框架,也就是只有定义,而无实现内容
2、依次实现-to achieve the category : XArray
- 2022-02-22 01:46:33下载
- 积分:1
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编程实现windows系统进程监控。
编程实现windows系统进程监控。-process control system.
- 2022-10-04 20:45:03下载
- 积分:1
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pctools.zip, system debug application
pctools.zip,系统debug应用-pctools.zip, system debug application
- 2022-04-19 02:18:16下载
- 积分:1
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转发一个力创的串口调试软件,挺好用的,功能挺全,自己一直用它来调试。...
转发一个力创的串口调试软件,挺好用的,功能挺全,自己一直用它来调试。-Create a forwarding serial debugging software, very good use, and feature very wide, I have been using it to debug.
- 2022-03-13 15:42:54下载
- 积分:1
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捕捉拍频
* 捕捉拍频功能仅在拍子停止时可用。
* 以一定节奏连纽按动Tap按钮两下或更多,Tempo会自动对应于按动的拍频。
* 连续2秒没有按动...
捕捉拍频
* 捕捉拍频功能仅在拍子停止时可用。
* 以一定节奏连纽按动Tap按钮两下或更多,Tempo会自动对应于按动的拍频。
* 连续2秒没有按动Tap,或启动拍子,则上次按动的记录将被清除,并在下次按动时重新记算拍频。
* 拍频将以连续按下的拍子间隔,以一定算法进行统计,得出近似值。
调节音量
* 拖动Volume框中的滑条即可调节音量,向左拖动使音量减小,向右拖动反之。
* 最小音量为静音,最大音量为拍音的原音量。
运行模式
* 选择Rum mode中的Performace为性能优先模式,选中Precision为精度优先模式。
* Perfomance模式下,启动拍子后程序占用系统资源极少,但精度不能完全保证。在系统性能良好时,误差不超过每拍0.015秒,但在系统性能低下时误差可能会相当大。
* Precision模式下,程序采用了高端的计时技术,保证误差在每拍十万分之一秒之内,且几乎不受系统性能影响,但此模式极占系统资源,以至于您可能在打拍子的同时无法运行其它程序。
* 一般情况下不推荐使用Precision模式,除非您有相当高的精度要求。-capture beat frequency* Beat capture function only when the racket can be stopped.* Even in a certain rhythm Tap button activated the New Zealand under two or more, Tempo will be automatically activated corresponding to the beat frequency.* Continuous two seconds not squeezed Tap, or commencement of the beat was last pressed the record will be cleared and the next re-activated in mind when counting beats.* Beat will be in charge of press row spacing, to a certain statistical algorith
- 2022-01-26 06:39:54下载
- 积分:1
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这是一个通过USB ID检测USB设备工具的存在
这是一个通过USB ID来检测USB设备是否存在的工具
- 2023-05-09 09:35:04下载
- 积分:1