Wiley.Symbian.OS.Internals.Real.time.Kernel.Programming.Dec.2005.eBook-DDU (779891), страница 2
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This kernel is designed to make phone-related developmenteasier: base-porting will be easier, device driver development will beeasier, software development will be easier.Symbian OS Internals is a detailed exposition on the new real-timekernel, providing the reader with the insights of the software engineerswho designed and wrote it.
In the main it is an explanatory text whichseeks to describe the functioning of the kernel, and, where relevant, toindicate key differences from its predecessor.This book is invaluable for:Those who are involved in porting Symbian OS. This book is not abase-porting manual, since this is already provided by Symbian; but itbenefits the base-porting engineer by giving him or her a more solidunderstanding of the OS being ported.Those writing device drivers. This book provides an in-depth explanation of how Symbian OS drivers work. Device drivers have changedconsiderably with the introduction of a single code, so this helps fill theknowledge gap for those converting them to the new kernel.Those who wish to know how the Symbian OS kernel works.
This bookprovides a detailed commentary on the internals of Symbian OS, providinginformation for the varied needs of readers, helping: students studyingreal-time operating systems, middleware programmers to understand thebehavior of underlying systems, systems engineers to understand howSymbian OS compares to other similar operating systems, and, for thosedesigning for high performance, how to achieve it.About the AuthorsJane Sales, lead authorJane joined Symbian (then Psion) in 1995 to lead the team whose goalwas to create a new 32-bit operating system, now known as EKA1.This goal was realized two years later, when the Psion Series 5 wasreleased.
Since then, Jane has taken on a variety of roles within Symbian,including product management, systems architecture and setting up asmall product-focused research group in Japan.Jane studied at Jesus College, Oxford, where she gained an MA inmathematics in 1982. After that, she became part of a small teambuilding a microcomputer to which they ported CCP/M. It was the startof a long-lasting love of systems programming.In 2003, Jane moved to the South of France and began work on this book.She would like to thank her husband, Roger, for his moral and financialsupport over the succeeding 18 months.Corinne Dive-ReclusCorinne joined Symbian in 2001 after several years at Baltimore Ltd.,where she designed the embedded software of ACCE (Advanced Configurable Crypto Environment), a cryptographic hardware module certifiedFIPS 140-1 Level 4.In 1987, her first job was as a presales engineer at Sun Microsystems,France where she was exposed to the concept of Network Computing &Internet and to its very first remote attacks – at a time when this was stillconfidential.
Being more interested in development than presales, shesubsequently worked as a software engineer for Concept and Implicit,developing an RAD (Rapid Application Development) programming language for the creation of distributed data-oriented applications.xivABOUT THE AUTHORSSince joining Symbian, Corinne has been the Platform Security SystemArchitect, and has worked on the platform security architecture from itsinitial design to its implementation in Symbian v9. To ensure that alllayers of the operating system will contribute to its overall security, sheworked extensively with Andrew Thoelke and Dennis May to validate thesecurity features of EKA2, design new services such as Publish&Subscribeand Capability Model, as well as defining the new behavior of thefile server, known as Data Caging.
For this work, Corinne received theSymbian Technical Innovation award in 2003.Fulfilling an early passion for Prehistoric Archaeology & Computing,Corinne graduated from the Ecole Nationale Superieure de Geologie, aunique French institution combining a five-year curriculum in Engineeringand Earth Science.Douglas FeatherDouglas joined Symbian (then Psion) in 1994. He started by leading thewriting of the text formatting engine for the Psion S5. He has also workedin the Web Browser and Core Apps teams where he rewrote most ofthe versit parser to greatly improve its performance.
For five out of thelast seven years he has worked mainly on the Window Server, where headded full color support, fading support, a framework to allow digital inkto be drawn over the other applications, support for multiple screens andtransparent windows.Douglas has a BSc in Mathematics from Southampton University and aPhD in Number Theory from Nottingham University.
He is a committedChristian and regularly engages in vigorous theological debate, to defendthe biblical truths about Jesus Christ, at Speaker’s Corner (Hyde Park,London) on Sunday afternoons.Carlos FreitasCarlos joined Symbian in 2000, working on device and media drivers andporting the Base. His involvement with EKA2 dates from 2002 when heported the newly released Kernel and several device drivers to a new hardware reference platform.
He has since assumed responsibility for documenting, improving and maintaining the power management framework.Carlos is a licentiate in Electronics and Telecommunications Engineeringfrom the University of Porto, Portugal, and had a CERN bursary to researchadvanced optical communications. Prior to Symbian Carlos worked onboth hardware and embedded software development under a number ofOperating Systems such as VxWorks, µItron and WinCE.ABOUT THE AUTHORSxvMorgan HenryMorgan joined Symbian (then Psion) in 1995 working in the kernelteam on EKA1, where he met some amazing people.
Once he regainedhis composure he was responsible for the kernel port for the Nokia9210 – ‘‘the world’s first open Symbian OS phone’’. During his time inthe kernel team he invented the EKA1 power management framework, across platform DMA framework, co-developed Symbian’s ROM-buildingtools, and worked on the partner-OS solution for single-core dualOS phones.Morgan is responsible for the Symbian OS kernel debug architecture forboth EKA1 and EKA2, and has worked with many tools vendors, takingthe project from research to production.Before joining Symbian, Morgan dabbled in graphic design, but henow finds himself as a System Architect. He’s not sure how thathappened.
Most recently he has been working on requirements anddesigns across several technology areas to shape future versions ofSymbian OS.Morgan maintains an active interest in drawing, painting and animation.He holds a BSc in Mathematics and Computer Science from Queen Maryand Westfield College, London.Tony LofthouseTony joined Symbian in 2002, having previous worked for the SantaCruz Operation (SCO) Inc.
in the Base Drivers team on the UnixWareOperating System and Veritas Inc. in the VxFS file-system team.At Symbian he has been a lead developer on various Symbian OShardware reference platform base ports for the Development Boardsgroup. Tony now works in the Base department and is the technicalarchitect for the Development Boards technology stream.He received a BSc in Computer Science from the University of Southampton in 1996. Prior to this he had a brief career in contaminated landenvironmental research, but along with sometimes being cold and wet,decided this was too risky.Dennis MayDennis May joined Symbian (then Psion) in 1996, having previouslyworked on RF hardware design and software development for mobilesatellite communication systems and on layer 1 software developmentfor a GSM mobile handset.xviABOUT THE AUTHORSDennis initially worked on the development of the Psion Series 5 PDA andsubsequently rewrote the Symbian maths library, worked on improvements to the EKA1 kernel and ported Symbian OS to new platforms.
Hewent on to become the original architect and creator of the EKA2 kernel,which he designed to improve on the original kernel in the areas ofreal-time performance, portability and robustness.Dennis has made several other contributions to Symbian, including workin the areas of build tools and automated testing, and he is an inventorof patented ideas relating to platform security, file systems, memorymanagement and kernel synchronization primitives.
He also had a handin the design of the ARM architecture 6 memory management unit.Dennis is currently working as kernel technology architect at Symbian,leading the kernel team in the continued development of the EKA2 kernel.Dennis received a BA in Mathematics from Trinity Hall, Cambridge,in 1990 and an MSc in Communications and Signal Processing fromImperial College, London, in 1991.Jason ParkerJason joined Symbian (then Psion) in 1998, where he became a foundingmember of the Base Porting Group (BPG).
He currently leads BPG andthe recently formed Multimedia Porting Group (MMPG) within Symbian’sTechnical Consulting division.Jason engages with Symbian semiconductor partners to ensure their SoCdesigns are optimized for Symbian phones. He and his teams have beeninstrumental in building many of Symbian’s leading-edge phones. Theyhave contributed practical technologies into the EKA2 project, includingROLF (now renamed as ROFS) and the Flash Logger.
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