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340 2p @ 2( 0.0005) = 7400 in sec 2 60 3 p 180 4 This shows good correlation between test and calculated values. In Fig. 10.13b, the 0.002 in error has a measured acceleration s = 45,000 in/sec2. Again substituting in y Eq. (10.5) 540 2p ys @ 2( 0.002) = 29, 600 in sec 2 60 3 p 180 4

The Session Initiation Protocol (SIP)

return 0; }

ifstream in; // input ofstream out; // output fstream both; // input and output open( ) opens a file.

One other class that is related to synchronization is Interlocked. This class offers an alternative to the other synchronization features when all you need to do is change the value of a shared variable. The methods provided by Interlocked guarantee that their operation is performed as a single, uninterruptable operation. Thus, no other synchronization is needed. Interlocked provides static methods that add two integers, increment an integer, decrement an integer, compare and set an object, exchange objects, and obtain a 64-bit value. All of these operations take place without interruption. The following program demonstrates two Interlocked methods: Increment( ) and Decrement( ). Here are the forms of these methods that will be used: public static int Increment(ref int location) public static int Decrement(ref int location) Here, location is the variable to be incremented or decremented.

Input/Output Input/Output Output Output Output Output Input/Output Output Output Input/Output Output Output Output Input Output

The default value is zero, unless the appropriate bit value is set in the REG_DWORD registry value DefaultPrnFlags at HKLM\Software\Citrix\Print\.

// Manually throw an exception. using System; class ThrowDemo { static void Main() { try { Console.WriteLine("Before throw."); throw new DivideByZeroException(); } catch (DivideByZeroException) { Console.WriteLine("Exception caught."); } Console.WriteLine("After try/catch statement."); } }

Manually install the first server in the new Presentation Server farm that will host the data store. You can image the second server in the farm for the deployment of additional servers. To image a server for rapid deployment with Access or MSDE: 1. Follow all necessary steps from the MetaFrame Presentation Server Administrator s Guide to install the first Presentation Server into the farm. 2. Install a second server into the farm with an indirect connection to the data store created on the first server. 3. With the second server successfully installed and restarted, log on to the console of the second server as a local or domain administrator. 4. On the second server, delete the Wfcname.ini file, if it exists, from the root drive of the server. 5. Stop the IMA service using the Services Control Panel. Set the startup type to Manual. 6. If the Enterprise edition components are installed, see the Cloning on Presentation Server, Enterprise Edition System section. 7. Take the image of the second server, and then restart the second server. 8. Deploy the image obtained in step 7. IMPORTANT It is important that some type of SID generation utility be executed when deploying Windows 2000 or Windows 2003 images. To set up the server and verify that it is added: 1. Set the SID of the server with the SID generator of choice. 2. Rename the new server with a unique name. 3. Manually start the IMA service and set the service to start automatically. 4. Verify that the server was successfully added to the farm by executing qfarm at the command prompt. The newly imaged server appears in the list of servers. 5. Modify the following registry values: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\IMA change value ServerHost to [newservername] H K E Y _ C L A S S E S _ R O O T \ A p p I D \ { B B B F 5 4 0 0 - E 0 9 1 - 11 D 8 - A D 7 6 005056C00008} (Note: This subkey may be alphanumerically different you may need to search for Ctx_SmaUser to find the correct sub key.) change value RunAs to [newservername]\Ctx_SmaUser 6. Reboot the server.