Archive for symmetric multiprocessing
Blackberry has launched new BlackPad tablet along with their new operating system. But there is a minor fault that we don’t know the real name of this product we call it so because RIM have announced it. As they have announced it they called it professional tablets this means that it has established for the users that are already using the BlackBerry smart phones. This combination means the transfer of data on the bigger screen. This can be done using Bluetooth connection. Through all this we can’t say that playbook is only for the users of Blackberry. By its specifications we can know that it contains a 7 inch screen, 1GHz core CPU etc. Here are some more specifications of this product of Blackberry:
- BlackBerry Tablet OS with support for symmetric multiprocessing
- 7” LCD, 1024 x 600, WSVGA, capacitive touch screen with full multitouch and gesture support
- 1 GB RAM o 1 GHz dual-core processor
- Dual HD cameras (3 MP front facing, 5 MP rear facing), supports 1080p HD video recording
- Wi-Fi – 802.11 a/b/g/n
- Audio playback: MP3, AAC, WMA
- Video playback: 1080p HD Video, H.264, MPEG, DivX, WMV
- HDMI video output
- Connectors: microHDMI, microUSB, charging contacts
- Bluetooth 2.1 + EDR
- Measures 5.1”x7.6”x0.4” (130mm x 193mm x 10mm)
- Weighs less than a pound (approximately 0.9 lb or 400g)
- Open, flexible application platform with support for WebKit/HTML-5, Adobe Flash Player 10.1, Adobe Mobile AIR, Adobe Reader, POSIX, OpenGL, Java.
We can’t say that it is only a business tablet but it is in the competition with iPad on the basis of its specifications. But not on the battery life which is not explained by RIM’s. But it should be nearer to iPad’s battery life that is 10 hours. Read More
IO Kit is used for interfacing the different devices just as you are working on the particular operating system. In fact it’s a sort of trainer on which you work for your applications. In this way you can program different devices to work the way you want for the purpose of developing different applications. Mostly we develop the device drivers in a high level language like objective C. To follow are some of the important tools for iPhone and iPad which might be of help to you for developing the device drivers.
Before you start developing device drivers you should have a know how of C++ and kernel programming. You have to be more creative in your approach towards programming using I/O kit tools.
The I/O kit is provided with plug n play, sleep mode, separate memory banks for kernel and user applications, parallel and symmetric multiprocessing and it provides a lot of room for code reusability.
The kernel features supported by these drivers are objected oriented programming framework, primitives for communication, data management and threading. It is compatible with all bus types. Instantiated objects that belong to different classes are tracked through I/O registry. Layering of client and provider objects can be done without a fuss; no matter how complicated the order is. There is a great room for code reusability in the latest model of the I/O kit.
The latest model of the I/O kit is different to its predecessors in a lot of ways. The available models before this were deficient in one way or the other. Many features of a modern operating system for example power management, driver stacking, automatic configuration etc. were absent in the previous models.
The crux of the design philosophy lies in the fact that object oriented programming model was developed. This architecture supports many devices with a way that is common among them. In the earlier versions this kit software development kits were separate entities but now the hardware is so much sophisticated that there is no requirement of complex codes. Application programming interface is open to all, resulting in facilitating the developers to use the source code for developing new drivers.
Provision of Namespaces
Name spaces are always helpful in identifying the classes. Therefore you should always try to use them and a reverse chronological order is preferred. Be cautioned never to declare an I/O subclass in namespace.
High Level Language Used
The programming language used is C++. However not every feature of this language is usable. There were many features in C++ that don’t suite a multithreaded environment resulting in their exclusion. As a programmer you cannot play with exceptions, templates and multiple inheritance. The I/O kit possesses its own runtime typing system so no need for C++ to provide that.
Different parts of the I/O kit are described as below:;
Three C++ libraries are used by I/O kit. These are cloaked by framework. There are three frameworks used in all. These are IOKit, kernel IO kit and kernel libkern. Read More