This code is actually the same as GoF's book. The singleton pattern is from many many programmers' industrial practice. Don't change it unless you are abosolute sure what you are doing. Just think a scenario, you have several huge different singletons using 2M or more memory each, and they are only needed in ~5 minutes once or once a day, however, your program is going to run 5 years continuously by 24*7.

ServletRequest (which encapsulates the communication from the client to the server) and ServletResponse (which encapsulates the communication from the servlet back to the client). ServletRequest and ServletResponse are interfaces defined inside javax.servlet package. See similar questions...

Contexts are units of text whose categorization you are interested in. For example, if you have a bunch of emails which you would like to categorize then each email will become a context and SenseClusters will try to cluster these contexts (emails) into separate clusters. See similar questions...

many of them. The only limitation is the process address space (which grows slowly on each dlopen, which mmap-s it text & data segments). In practice, on linux x86 with libc6, a program can dlopen 30 000 -thirty thousands- different shared objects (and probably much more). See http://starynkevitch.net/Basile/manydl.c for an example not permanently (after the dlopen succeed). But internally, dlopen needs to open the shared object (but closes it after having mmap-ed it). See similar questions...

Pinning sequences in the shared pool will prevent the numbers from being lost, which is normal when they are aged out. See similar questions...

When you run the dynamic linker, it gets the name of a shared library or shared object, and tries to find a corresponding full pathname. The process is similar to looking up the pathname to a program in the shell. As with the shell, you can use environment variables to control paths that the dynamic linker checks: The dynamic linker checks the LD_PRELOAD variable first. This variable may contain a list of colon or whitespace separated pathnames for shared libraries or shared objects. See similar questions...

A servlet is a program written in the Java programming language that runs on the server, as opposed to the browser (applets). Detailed information can be found at http://java.sun.com/products/servlet. See similar questions...

Yeah we do provide the same. There are some advantages to having a unique IP for your site. When you change servers, you can point your users to a new IP, so they don't have to wait for the domain name change to propagate. With a static IP, it can also be simpler to upload and test your site before transferring the domain name to a new server. Setting up SSL is also much simpler. See similar questions...

That means I have to build all my library objects twice, once for shared and once for static. I don't like that! See similar questions...

No. Each library you build must have a unique target name, i.e. the "libname" field of the ADD_LIBRARY command. That way, CMake can track dependencies separately for each library. Libraries can have the same OUTPUT_NAME, see the SET_TARGET_PROPERTIES command, but this is not the default. edit] That means I have to build all my library objects twice, once for shared and once for static. I don't like that! In practice, most libraries have different defines and compiler flags for the shared vs. See similar questions...

Set the OUTPUT_NAME of your shared and static libraries to the same thing. ADD_LIBRARY(foo SHARED ${foo_sources}) ADD_LIBRARY(foo-static STATIC ${foo_sources}) // The library target "foo" already has a default OUTPUT_NAME of "foo", so we don't need to change it. // The library target "foo-static" has a default OUTPUT_NAME of "foo-static", so change it. See similar questions...

Jonathan Biggar (July, 1998) : Both sides. The client initially requests the setup of a context, but I believe that either side can invalidate the context. Nick Battle (July, 1998) : The "interceptors" are responsible for managing the contexts once they have been created. The SecurityContext object has operations to protect messages in the context, and could in practice do some of the management of the context when messages are sent/received (ie. See similar questions...

File contexts are used by the setfiles command to generate persistent labels which describe the security context for a file or directory. Fedora Core ships with the fixfiles script, which supports three options: check, restore, and relabel. This script allows users to relabel the file system without having the selinux-policy-targeted-sources package installed. The command line usage is more friendly than the standard setfiles command. See similar questions...

Well, there is (almost) no demand for static libraries so far. If you want them anyway and are capable to deal with the problems as described in the in question above, then you may retrieve the set of Makefiles for OS/2 and build them on your own. See similar questions...

The Windows 2000 Resource Kit ships with the MOVETREE.EXE utility which can be used to move organization units, users or computers between domains in a single forest. This is useful for the consolidation of domains or to reflect organization restructuring. See similar questions...

Because of the complex replication available in Windows 2000 and the Active Directory just deleting an object would result in it potentially being recreated at the next replication interval and so deleted objects are 'Tombstoned' instead. This basically marks them as deleted and applies to all objects. See similar questions...

Install DirectX 7 (or later) and just click "Ok" when it looks for dx61eng.exe in the default directory and then click "No" when it asks if you would like to try another directory during the Art-o-matic install to ignore that prompt. Position the mouse over anything and press F1 key. Position the mouse over a menu item, button, check item, slider, window, object, ... anything! Then read the message at bottom of screen. See similar questions...