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• How is a thread different from a process?

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1. Submitted By: amolh — October 6, 2006 +1 votes   + -

   A process runs in its own address space. No two processes share their address space.

   Threads will run in the same address space of the process that owns them. Threads belonging to the same process will run in the same address space. They will also share the process’s stack and heap. No two processes will share their stacks or their heaps.

   Anyone got any more core differences?

3. Submitted By: johny_bravo — October 6, 2006 not yet rated   + -

   Context switching in threads is less expensive as compared to processes

4. Submitted By: ldevi — October 6, 2006 not yet rated   + -

   Thread is a piece of execution i.e., a program

   Process is a combination of Threads.

5. Submitted By: gbuntin — October 6, 2006 not yet rated   + -

   Threads also have local storage which is not shared by the other threatd in the process. This is known as Thread Local Storage (TLS).

   TLS does not need synchronisation mechanisms to be coded and is therefore far easier to use but it does tie object created on a particular thread to that thread for their entire duration.

   Visual Basic makes heavy use of TLS and this is the main reason that objects created from VB should not be used outside Single Thraded apartments.

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