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Slides0401 - COP 3330 Slides 4/1 Topics Threads Sequential...

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Slides 4/1 COP 3330
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Topics Threads
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Sequential Execution Many programs (probably most of the ones you've written) have sequential execution The steps of the program occur in the order in which they were written Only one thing happens at a time This is not the only way things can be done!
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Processes A process is a program that is executing For a long time, computers have been able to run multiple processes concurrently (at the same time)
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Processes On many computers, processes don't actually run at the same time, but the OS switches between processes so fast that a human can't tell the difference With the advent of multi-core and hyperthreaded CPUs, some computers can actually have multiple processes running simultaneously
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Threads It is possible for a single process to have multiple sub-tasks that run concurrently These are known as threads Threads are sometimes called lightweight processes
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Threads Why use threads?
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