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What is CLR
CLR is stand for Common Language Runtime and it forms the heart of the .NET framework. All Language have runtime and it is the responsibility of the runtime to take care of the code execution of the Program. For example, VB6 has MSVBVM60.DLL and Java has Java Virtual Machine etc. Similarly, .NET has CLR. Following are the responsibilities of CLR.
- Garbage Collection: CLR automatically manages memory thus eliminating memory leaks. When objects are not referred, GC (Garbase Collection) automatically release those memories thus providing efficient memory management.
- Code Access Security: CAS grants rights to program depending on the security configuration of the machine. Example, the program has rights to edit or create a new file but the security configuration of machine does not allow the program to delete a file. CAS will take care that the code runs under the environment of machines security configuration.
- Code Verification: This ensures proper code execution and type safety while the code runs.It prevents the source code to perform illegal operation such as accessing invalid mamory locations etc.
- IL (Intermediate language)-to-native translators and optimizer's: CLR uses JIT, compiles the IL code to machine code, and then executes. CLR also determines depending on platform what is optimized way of running the IL code.
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