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As in the last chapter, this code fragment violates several rules of good programming. Readability and maintenance are usually more important than execution speed or size, but in this chapter the topic is performance, and that implies a trade-off with the other objectives. Like the last chapter, you ll see many examples of coding practices here that aren t recommended in other parts of this book.

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bRet = FALSE ; } break ; case DLL_PROCESS_DETACH : // Check to see whether this process has any items in the // notification array. If it does, remove them to avoid // leaving orphaned items. if ( 0 != g_iThisProcessItems ) { DWORD dwProcID = GetCurrentProcessId ( ) ; // I don't need to grab the mutex here because only a // single thread will ever call with the // DLL_PROCESS_DETACH reason. // Loop through and take a gander. for ( INT_PTR i = 0 ; i < TOTAL_NOTIFY_SLOTS ; i++ ) { if dwProcID ) { #ifdef _DEBUG TCHAR szBuff[ 50 ] ; wsprintf ( szBuff , _T("DLL_PROCESS_DETACH #%d\n"), i ) ; TRACE ( szBuff ) ; #endif // Get rid of it. RemoveNotifyTitle ( (HANDLE)i ) ; } } } // Close the mutex handle. #ifdef _DEBUG bCHRet = #endif 589 removing : ( g_shared_NotifyData[i].dwOwnerPID ==

down. You should also have an implementation guideline that helps people understand how to pick passwords. Technical policies should be enforced domain-wide, and also on member computers if you use local accounts on member computers. They should require complexity, long passwords (10 or more characters are highly preferable, accounting for the fact that it will take you some time to get people to pick good passwords) and should cycle the passwords regularly. However, tie the policies together logically. If you require 10-character passwords, it is almost certainly acceptable to keep them for 6 months or a year. With eight characters you should change them every 3 6 months. With anything fewer than eight characters, you should consider changing passwords monthly. Policies can be managed with Group Policy (GP). Figure 2-14 shows where in GP the settings are.

var factory = new LogWriterFactory( ); var myLogger = factory.Create( ); myLogger.Write( );

["http://www.rubyinside.com/"] If you immediately want to use the URLs one by one, you can use extract with a block: require 'uri' email = %q{Some cool Ruby sites are http://www.ruby-lang.org/ and http://www.rubyinside.com/ and http://redhanded.hobix.com/} URI.extract(email, ['http', 'https']) do |url| puts "Fetching URL #{url}" # Do some work here... end

3. By default, how long do logged events last in DHCP server logs a. One day b. One week c. One month d. Until the log grows beyond 1 MB

Architectural requirements refer to the infrastructure needs that must be present for the system to achieve the desired business goal A multitude of factors are involved in determining these requirements, such as the technologists experience with similar systems, operational constraints, existing physical infrastructure, and application services needed across multiple systems (cross-cutting concerns) These requirements are useful in performing a gap analysis of infrastructure features when selecting a product or set of products on which to build enterprise applications It s the architect s job to then make the build vs buy decisions A set of general architectural requirements can be listed from the general application requirements previously outlined and the experience gained while building similar systems Data management and persistence: Data must be easy to store, retrieve, search, and modify Data integrity shouldn t be compromised in the face of multiple sources attempting to modify the same data.

Maintainability and extensibility: The system must be easy to maintain and extend Pieces of functionality should be easily added or removed, or turned on or off, depending on the operational characteristics applicable to a specific deployment Security: Data must be stored and retrieved in a secure and efficient fashion Users of the system must have access to functionality according to their roles or security levels Scalability and reliability: Multiple users should be able to interact with the system The performance characteristics of the system shouldn t change dramatically with an increase in the concurrent user base Personalization and customization: The user interface should have a customizable look and feel, allowing for branding and dynamic changes based on the identity of the user.

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The method signatures This allows code to think that it is operating on an instance of the Object class, when in fact, it could be operating on an instance of some other class . The implementation of these methods This allows the developer defining a class derived from Object not to be required to implement Object s methods manually .