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c# - Usage of Server Side Controls in MVC Frame work -

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i using asp.net 4.0 , mvc 2.0 web application. project requiremrnt have use server side control in application not possibl in noraml case. ideally want use adrotator control , datalist control. i saw few samples , references in codepleax mvc controllib howwver found less useful. can tell how utilize theese controls in asp.net application along mvc. note: please provide functionalities related adrotator , datalist controls not equivalent functionalities thanks in advace. mvc pages not use normal .net solution makes use of normal .net components impossible. a normal .net page use event driven solution call different methods service side mvc use actions , view completly different way handle things. also, mvc not use viewstate normal .net controlls require. found article discussing mixing of normal .net , mvc.
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java - if multiple threads are updating the same variable, what should be done so each thread updates the variable correctly? -

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if multiple threads updating same variable, should each thread updates variable correctly?

any appreciated

there several options:

1) using no synchronization @ all

this can work if data of primitive type (not long/double), , don't care reading stale values (which unlikely)

2) declaring field volatile

this guarantee stale values never read. works fine objects (assuming objects aren't changed after creation), because of happens-before guarantees of volatile variables (see "java memory model").

3) using java.util.concurrent.atomiclong, atomicinteger etc

they thread safe, , support special operations atomic incrementation , atomic compare-and-set operations.

4) protecting reads , writes same lock

this approach provides mutual exclusion, allows defining large atomic operation, multiple data members manipulated single operation.


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