Threading in C#
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This document discusses multithreading in C#. It introduces threads and multithreading, describing how operating systems allow multitasking and how threads work. It explains that the .NET Framework supports multithreading using the System.Threading namespace and Thread class. It describes properties and methods of the Thread class, potential problems like deadlocks that can occur with multithreading, and solutions like synchronization and locking to prevent issues.
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- 3. IntroductionDo you like to be professional ?What is the target of this session ?A word by the history.Before multithreading.
- 4. What is Multitasking ?Operating Systems do this for us How?(Stories to Clear)
- 5. What is Multitasking ?A Little Demo for two MethodsWithoutMultitasking
- 6. What is Multitasking ?So, Whatis a Thread?AndHowit works ?
- 7. Threads typesForeground VS background .The Threads is by default foreground .But you can make it background by assigning a simple property (IsBackground) to true .
- 8. Multithreading in C#C# support Multitasking strongly.Multithreading == Multitasking.using System.Threading* .Using Thread class.* A built in namespace in .NET framework
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- 11. Thread (Static Members)Static Methods
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- 14. Problems that will face usA TechnicalExample
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- 16. Warning !!Don’t use Multiple threads except it is required not to make the CPU busy with transitions between threads instead of serving the instructions of the threads itself.
- 17. Give a solution ??Some one say :Stop sharing device It sounds very funny
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- 20. Another problem One of the problems that Threads cause is Deadlock** It means that one thread might wait infinite period.
- 21. Deadlock With An ExampleThread 1 lock object A then lock object BThread 2 lock object B then lock object ASo, What will happen ?
- 22. Deadlock With An ExampleThread 1 will lock objectAThread 2 willlockobjectBThen , thread1 waiting for object B to be released from thread2 that waiting for object A from thread1
- 23. Deadlock With An ExampleSo, the program will deadlock at this fragment of code because non of both threads will leave the object until it got the other and end working.
- 24. Deadlock ?Also exist in database servers and operating systems.This kind of bugs is Very difficult to be detected because it give no error message in runtime and has no exception handling .Just the program is stop responding .
- 25. So, what is the solution ?The only Way is To be very Carefulwhen usingmultiple locks .
- 26. SummaryTo day we know :What before Multithreading.
- 28. Problems face us and how to solve them.
- 29. Synchronization and locking mechanism.
- 30. Thanks