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.
标签： priority preemptive inversion problem
上传时间： 2015-12-14
上传用户：气温达上千万的
Thinking in C++, 文档及源码
上传时间： 2013-12-31
上传用户：zhuimenghuadie
Most of the developers of the AVR binutils and gcc ports in addition to the devleopers of avr-libc subscribe to the list,
标签： the developers devleopers of
上传时间： 2013-12-29
上传用户：上善若水
Welcome to the software files for the ADS8361 to TMS320F2812! There are two project files in each of the folders McBSP, SPI and Both. Mode II and IV are explored using the McBSP port alone, as well as the SPI port. These projects are located in the SPI and McBSP folders. Modes I and III are explored using both McBSP and SPI. In Mode I, the M0 and M1 pins are controlled by use of the jumper on the evaluation module. A0 is controlled by the DX pin of the McBSP port. In Mode III, the A0, M0 and M1 pins are controlled via GPIO functions of PortF. The "SRC", "CMD" and "INCLUDE" files in the archive are from "C28x Peripheral Examples in C" (document # SPRC097). If you have questions about this or other Data Converter products, feel free to e-mail us at:
标签： files the software Welcome
上传时间： 2015-12-16
上传用户：lixinxiang
In addition to all the people who contributed to the first edition, we would like to thank the following individuals for their generous help in writing this edition. Very special thanks go to Jory Prather for verifying the code samples as well as fixing them for consistency. Thanks to Dave Thaler, Brian Zill, and Rich Draves for clarifying our IPv6 questions, Mohammad Alam and Rajesh Peddibhotla for help with reliable multicasting, and Jeff Venable for his contributions on the Network Location Awareness functionality. Thanks to Vadim Eydelman for his Winsock expertise. And finally we would like to thank the .NET Application Frameworks team (Lance Olson, Mauro Ottaviani, and Ron Alberda) for their help with our questions about .NET Sockets.
标签： the contributed addition to
上传时间： 2015-12-17
上传用户：dongqiangqiang
This code was used to produce simulation results described in: Using Directional Antennas to Prevent Wormhole Attacks Lingxuan Hu and David Evans. Network and Distributed System Security Symposium, San Diego, 5-6 February 2004.
标签： Directional simulation described Antennas
上传时间： 2014-12-06
上传用户：xieguodong1234
#ifdef _AFXDLL Enable3dControls() // Call this when using MFC in a shared DLL #else Enable3dControlsStatic() // Call this when linking to MFC statically #endif CPreviewDialogDlg dlg m_pMainWnd = &dlg int nResponse = dlg.DoModal() if (nResponse == IDOK) { // TODO: Place code here to handle when the dialog is // dismissed with OK } else if (nResponse == IDCANCEL) { // TODO: Place code here to handle when the dialog is // dismissed with Cancel } // Since the dialog has been closed, return FALSE so that we exit the // application, rather than start the application s message pump. return FALSE }
标签： Enable3dControls Enable3d AFXDLL shared
上传时间： 2015-12-19
上传用户：hustfanenze
A rich edit control is a window in which the user can enter and edit text. The text can be assigned character and paragraph formatting, and can include embedded OLE objects. Rich edit controls provide a programming interface for formatting text.
上传时间： 2013-12-06
上传用户：lixinxiang
adder4 hdl ok in Quartus II 5.1
上传时间： 2015-12-20
上传用户：caiiicc
cmi encoder and decoder ok in Quartus ii 5.1
标签： Quartus encoder decoder cmi
上传时间： 2013-12-25
上传用户：脚趾头
