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notwithstanding SCO's UnixWare 7.1.4 helps Linux-like capabilities that enable applications to elope natively on commandeer of UnixWare, SCO engineers favourite to completely port open-supply purposes into the UnixWare environment. Doing so makes functions more without problems attainable in binary form, which could greatly ease compatibility considerations across a variety of flavors of open-source OSes. SCO's inclusion of these ported functions will uphold Linux developers transitioning to UnixWare. up to now, Linux clients needed to port and recompile functions manually without a exist positive that a ported software would labor throughout Linux adaptations.
UnixWare contains a particularly optimized C++ compiler for the Intel platform. A memory-leak device and a graphical debugger that can labor with threaded applications are too a section of the OS's construction kit. UnixWare too comprises sun's J2SE 1.four.2, Postgres, MySQL and personal home page.
UnixWare packs powerful tools for net and web functions builders, including a soap/XML toolkit with Apache Axis, gSOAP and PEAR::soap. UnixWare's web services Substrate extends legacy eco-friendly monitor purposes to the internet or to the computing device. by using getting access to software memory and interacting directly with instructions, the substrate paraphernalia can interface with Cobol and legacy C courses that expend text-based mostly GUIs.
UnixWare's key kernel locking potential allows builders to pre-empt the kernel at any factor to elope other techniques. This granular locking mechanism allows UnixWare to lead up to 32 CPUs, the highest that can too exist used by the Intel platform. home windows and Linux don't present this characteristic. UnixWare's kernel technology instantly optimizes virtual reminiscence according to purchasable server memory and pressure space. This computerized tuning manner takes plenary capabilities of paraphernalia elements, releasing administrators from having to tweak the OS. because many techniques these days attain not consist of floppy drives, UnixWare helps media-less dispensed installations over a community. The server additionally includes a mass replication utensil to create server images. UnixWare supports up to 64 Gbytes of RAM and file sizes as much as 1 Tbyte. The OS too helps scorching-swappable CPUs, Intel's hyperthreading know-how, USB 2.0 and numerous DVD drives. UnixWare is commonly utilized in POS and embedded Intel-primarily based methods, considering the fact that the OS supports javax.comm for POS functions that elope on JBoss. JBoss does not ship with UnixWare, but it surely is attainable through the Skunkware project.
SCO's Merge technology permits windows functions to elope natively in UnixWare. This capacity is chiefly crucial for groups consolidating servers, considering that Merge permits any home windows utility to elope aspect-by way of-facet with Unix apps. despite the fact, interfacing with home windows applications is proscribed to internet services or client-base communique through a network. The OS does not supply direct calls to windows applications. UnixWare purposes can best engage with .internet functions through web capabilities.
UnixWare helps many networking and protection protocols similar to VPN tunneling, aboriginal firewall skill for bidirectional traffic, PAM and NSS support, Samba and encryption for its file equipment. The server contains a GUI-based mostly administration interface, which too works in text-base form, allowing administrators to manage each utensil and beget via a solitary administration interface. SCO's channel program presents an ordinary reseller margin of 25 percent. The business offers MDFs, product discounts and sponsorship alternatives. customized, on-website sales practising is equipped yearly on the company's annual partner conference and on the web. partners should pay for mobile technical assist at at the very least 11 hours, but discounts can exist institute in line with accomplice level. Free internet-primarily based uphold is available 24x7.
CHANNEL application SNAPSHOTS>UnixWare 7.1.fourcompany: SCOLindon, Utah(800) 876-8649 ext.8507www.thescogroup.comDISTRIBUTORS: DTR enterprise techniques, Seneca information, Tech statistics, Terian SolutionsAUTHORIZATION necessities: NoneTECH score: CHANNEL rating:
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<p>enhancing offerings ranging from UNIX for embedded gadgets as much as commercial enterprise techniques</p><p>The SCO community, Inc. (SCO) (Nasdaq: SCOX), the owner of the UNIX® operating gadget and a leading provider of UNIX-based mostly options, has announced a big array of latest and enhanced UNIX products as well as new channel abet and practicing programs.</p><p>The upcoming product releases tag the greatest throughout-the-board neighborhood of product enhancements from SCO in a few years. New or better UNIX products from SCO and their anticipated availability dates encompass:* UnixWare 7.1.four (now shipping)* Smallfoot embedded UNIX (now delivery)* SCOoffice Server four.1 (July 2004)* Vintela Authentication from SCO unencumber 2.6 (August 2004)* Legend – the code title for the subsequent release of OpenServer (1st Quarter 2005)* Reseller practicing and abet courses</p><p>UnixWare 7.1.4 – a huge upgrade to the UnixWare product line, 7.1.4 comprises many enhancements that proceed to maintain UnixWare because the top-rated, reliable, scalable and low cost operating paraphernalia in its type. UnixWare 7.1.four provides abet to allow UnixWare to elope lots of Java and net capabilities applications.</p><p>SCOoffice Server 4.1 – SCOoffice Server four.1 is a authentic, full-featured web electronic mail and collaboration reply for wee and medium businesses. SCOoffice Server stops e mail viruses, filters out junk e mail and secures email access. presenting more than simply e mail services, SCOoffice Server additionally delivers a true-time collaboration solution for scheduling community meetings, sharing contact lists and folders, and managing group assignment lists. SCOoffice Server integrates with Microsoft® Outlook® and industry-standard e mail readers and web browsers.</p><p>Smallfoot – SCO’s formal entry into the embedded UNIX market, Smallfoot includes a toolkit it really is used to create the Smallfoot embedded UNIX working system. The toolkit is a speedy pile utensil that allows establishments to create a wee utility footprint operating paraphernalia (i.e., Smallfoot embedded UNIX) customised for lots of functions together with factor-of-Sale, gaming, hand-held and a lot of different devices.</p><p>Vintela Authentication from SCO unencumber 2.6 – Vintela Authentication from SCO (VAS) is the business’s providing for managing a solitary consumer identification across a heterogeneous UNIX and home windows® atmosphere. VAS makes expend of Kerberos encryption to protect elegant person credentials, presenting network and person protection. release 2.6 will encompass further MMC snap-ins, move-woodland authentication and an abominable lot more.</p><p>Legend – code-identify for the subsequent unencumber of OpenServer – because of ship in the 1st Quarter of 2005. This development endeavor is step one for SCO in aiding a solitary UNIX pile direction for each OpenServer and UnixWare. It makes it viable for SCO to proceed to assist the 32-bit Intel architecture while including aid for sixty four-bit superior computing. The improvement to their consumers is more suitable uphold for thousands of purposes written for UNIX, Java and the faculty to connect them with net functions. Legend continues their commitment to price, security and reliability.</p><p>“purchasers cost the proven reliability and protection of SCO UnixWare and SCO OpenServer running on pervasive Intel and AMD hardware,” talked about Jeff Hunsaker, Senior vice chairman and benchmark manager, SCO’s UNIX division. “via nowadays’s announcements, SCO is demonstrating their lengthy-time age dedication to UNIX consumers by way of proposing big enhancements to their flagship UNIX products. in addition, SCO is proposing solutions that raise their UNIX offerings with updates to SCOoffice Server and Vintela Authentication.”</p><p>together with new product offerings, SCO has announced several new classes for its mighty UNIX reseller organization. These working towards and marketing courses will deliver SCO resellers with the skills and uphold to exist positive their success in promoting SCO items. These working towards and advertising and marketing courses encompass:</p><p>* SCOoffice Server technical training on administration and client access http://www.sco.com/partners/working towards/scooffice/* In-depth hands-on training at SCO discussion board 2004 for SCOoffice Server four.1. This practising is available to any attendee at SCO discussion board for a wee registration payment* punch of UNIX® advertising and co-branding substances available during the SCO partner Lounge at http://www.sco.com/login/* Co-branding materials equivalent to net banners, journal ads., HTML templates and product collateral* Rebate classes attainable to companions via enviornment sales Managers and the North the us advertising team* marketing pile funds (MDF) available to Premier companions</p><p>information ends</p><p>Notes to Editors</p><p>About SCOThe SCO group (Nasdaq: SCOX) helps hundreds of thousands of customers in additional than 82 nations to develop their organizations commonplace. Headquartered in Lindon, Utah, SCO has a global network of greater than 11,000 resellers and four,000 builders. SCO world capabilities provides reputable localised uphold and functions to companions and purchasers. For extra assistance on SCO items and capabilities, talk over with http://www.thescogroup.com.</p><p>SCO and the associated SCO emblem are emblems or registered trademarks of The SCO group, Inc. within the U.S. and other countries. UNIX is a registered trademark of The Open community. sum different company or product names are or could exist logos of, and are used to identify items or features of, their respective house owners.</p><p>For more information, tickle contact:Kieran O'ShaughnessyThe SCO group+sixty one 2 9440 7577 (tel)</p><p>Press / Analyst Contact:Michael HendersonGotley Nix Evans+61 2 9957 5555 (tel)+61 413 054 738 (mob)firstname.lastname@example.org</p>
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ACE is a highly portable, widely used, open-source host infrastructure middleware toolkit. The source code is freely available from http://ace.ece.uci.edu/ or http://
www.riverace.com/. The core ACE library contains roughly a quarter million lines of C++ code that comprises approximately 500 classes. Many of these classes cooperate to shape ACE's major frameworks. The ACE toolkit too includes higher-level components, as well as a big set of examples and an extensive automated regression test suite.
To sever concerns, reduce complexity, and permit functional subsetting, ACE is designed using a layered architecture [POSA1], shown in motif 1.7. The capabilities provided by ACE span the session, presentation, and application layers in the OSI reference model [Bla91]. The foundation of the ACE toolkit is its combination of an OS adaptation layer and C++ wrapper facades, which together encapsulate core OS network programming mechanisms to elope portably on sum the OS platforms shown in Sidebar 2 (page 16). The higher layers of ACE build on this foundation to provide reusable frameworks, networked service components, and standards-based middleware.
motif 1.7: The Layered Architecture of ACE1.4.2 A Synopsis of the ACE Frameworks
The ACE frameworks are an integrated set of classes that can exist instantiated and customized to provide complete networked applications and service components. These frameworks abet to transfer decades of accumulated learning directly from the ACE developers to
Sidebar 2: OS Platforms Supported by ACE
ACE runs on a wide compass of operating systems, including:
PCs, for example, Windows (32- and 64-bit versions), WinCE, and Macintosh OS X
Most versions of UNIX, for example, SunOS/Solaris, IRIX, HP-UX, Tru64 UNIX (Digital UNIX), AIX, DG/UX, Linux (Redhat, Debian, and SuSE), SCO OpenServer, UnixWare, NetBSD, and FreeBSD
Real-time operating systems, for example, VxWorks, ChorusOS, LynxOS, Phar-lap TNT, QNX Neutrino and RTP, RTEMS, and pSoS
Large enterprise systems, for example, OpenVMS, MVS OpenEdition, Tandem NonStop-UX, and Cray UNICOS.
ACE can exist used with sum of the major C++ compilers on these platforms. The ACE Web site at http://ace.ece.uci.educontains a complete, up-to-date list of platforms, along with instructions for downloading and pile ACE.
ACE users in the shape of expertise embodied in well-tested and reusable C++ software artifacts. The ACE frameworks implement a pattern language for programming concurrent object-oriented networked applications. motif 1.8 illustrates the ACE frameworks. To illustrate how the ACE frameworks reliance on and expend each other, the lines between boxes depict a dependency in the direction of the arrow. Each framework is outlined below.
motif 1.8: The Key Frameworks in ACE
ACE Reactor and Proactor frameworks. These frameworks implement the Reactor and Proactor patterns [POSA2], respectively. Both are architectural patterns that allow applications to exist driven by events that are delivered to the application from one or more event sources, the most Important of which are I/O endpoints. The Reactor framework facilitates a reactive I/O model, with events signaling the faculty to open a synchronous I/O operation. The Proactor framework is designed for a proactive I/O model where one or more asynchronous I/O operations are initiated and the completion of each operation triggers an event. Proactive I/O models can achieve the performance benefits of concurrency without incurring many of its liabilities. The Reactor and Proactor frameworks automate the detection, demultiplexing, and dispatching of application-defined handlers in response to many types of events. Chapters 3 and 4 depict the ACE Reactor framework and Chapter 8 describes the ACE Proactor framework.
ACE Service Configurator framework. This framework implements the Component Configurator pattern [POSA2], which is a design pattern that allows an application to link and unlink its component implementations without having to modify, recompile, or relink the application statically. The ACE Service Configurator framework supports the config-uration of applications whose services can exist assembled late in the design cycle, such as at installation time and/or elope time. Applications with elevated availability requirements, such as mission-critical systems that discharge online transaction processing or real-time industrial process automation, often require such springy configuration capabilities. Chapter 2 describes the design dimensions associated with configuring networked services and Chapter 5 describes the ACE Service Configurator framework.
ACE stint framework. This framework implements various concurrency patterns, such as dynamic remonstrate and Half-Sync/Half-Async [POSA2]. dynamic remonstrate is a design pattern that decouples the thread that executes a way from the thread that invoked it. Its purpose is to enhance concurrency and simplify synchronized access to objects that reside in their own threads of control. Half-Sync/Half-Async is an architectural pattern that decouples asynchronous and synchronous processing in concurrent systems, to simplify programming without reducing performance unduly. This pattern incorporates two intercommunicating layers, one for asynchronous and one for synchronous service processing. A queueing layer mediates communication between services in the asynchronous and synchronous layers. Chapter 5 of C++NPv1 describes the design dimensions associated with concurrent networked applications and Chapter 6 of this engage describes the ACE stint framework.
ACE Acceptor-Connector framework. This framework leverages the Reactor framework and reifies the Acceptor-Connector pattern [POSA2]. This design pattern decouples the connection and initialization of cooperating peer services in a networked system from the processing they discharge once connected and initialized. The Acceptor-Connector framework decouples the dynamic and passive initialization roles from application-defined service processing performed by communicating peer services after initialization is complete. Chapter 7 describes this framework.
ACE Streams framework. This framework implements the Pipes and Filters pattern, which is an architectural pattern that provides a structure for systems that process a stream of data [POSA1]. The ACE Streams framework simplifies the development and composition of hierarchically layered services, such as user-level protocol stacks and network management agents [SS94]. Chapter 9 describes this framework.
When used together, the ACE frameworks outlined above enable the development of networked applications that can exist updated and extended without the necessity to modify, recompile, relink, or restart running applications. ACE achieves this unprecedented flexibility and extensibility by combining
OS mechanisms, such as event demultiplexing, IPC, dynamic linking, multithreading, multiprocessing, and synchronization [Ste99]
C++ language features, such as templates, inheritance, and dynamic binding [Bja00]
Patterns, such as Component Configurator [POSA2], Strategy [GoF], and Handler/Callback [Ber95]
The ACE frameworks provide inversion of control via callbacks, as shown below:
Inversion of Control
Reactor and Proactor
Calls back to application-supplied event handlers to discharge processing when events occur synchronously and asynchronously.
Calls back to application-supplied service objects to initialize, suspend, resume, and finalize them.
Calls back to an application-supplied hook way to discharge processing in one or more threads of control.
Calls back to service handlers to initialize them after they're connected.
Calls back to initialize and finalize tasks when they are pushed and popped from a stream.
The callback methods in ACE's framework classes are defined as C++ virtual methods. This expend of dynamic binding allows networked applications to freely implement and extend interface methods without modifying or rebuilding existing framework classes. In contrast, the ACE wrapper facades rarely expend callbacks or virtual methods, so they aren't as extensible as the ACE frameworks. The ACE wrapper facades attain uphold a broad compass of expend cases, however, and can exist integrated together via generic programming [Ale01] techniques based on the C++ traits and traits classes idioms outlined in Sidebar 40 (page 165).
Figure 1.9 illustrates how the class libraries and frameworks in ACE are complementary technologies. The ACE toolkit simplifies the implementation of its frameworks via its class libraries of containers, which embrace lists, queues, hash tables, strings, and other reusable data structures. Likewise, application-defined code invoked by event handlers in the ACE Reactor framework can expend the ACE wrapper facades and the C++ benchmark library classes [Jos99] to discharge IPC, synchronization, file management, and string processing operations. Sidebar 3 describes how to build the ACE library so that you can experiment with the examples they present in this book.
motif 1.9: Applying Class Libraries to Develop and expend ACE Frameworks
Sidebar 3: pile ACE and Programs that expend ACE
ACE is open-source software that you can download from http://ace.ece.uci. edu or http://www.riverace.com and build yourself. These sites hold a wealth of other material on ACE, such as tutorials, technical papers, and an overview of other ACE wrapper facades and frameworks that aren't covered in this book. You can too purchase a prebuilt version of ACE from Riverace at a nominal cost. descry http://www.riverace.com for a list of the prebuilt compiler and OS platforms supported by Riverace.
If you want to build ACE yourself, you should download and unpack the ACE distribution into an vacuous directory. The top-level directory in the distribution is named ACE_wrappers. They advert to this top-level directory as "ACE_ROOT." You should create an environment variable by that title containing the plenary path to the top-level ACE directory. The ACE source and header files reside in $ACE_ROOT/ace.
The $ACE_ROOT/ACE-INSTALL.html file has complete instructions for pile ACE, including how to configure it for your OS and compiler. This book's networked logging service example source and header files reside in $ACE_ROOT/examples/ C++NPv2 and are ready to build on sum platforms that ACE supports. To build your own programs, the $ACE_ROOTdirectory must exist added to your compiler's file embrace path. For command-line compilers, this can exist done with the -Ior /Icompiler option. Graphical IDEs provide similar options, such as MSVC++'s "Preprocessor, Additional embrace directories" section of the C/C++ tab on the Project Settings dialog box.
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