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by pron
5146 days ago
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The CPU is aware of a thread's instruction pointer and stack pointer (that's how some CPUs are able to support hyperthreading). Perhaps it's possible that the OS could somehow manipulate that to implement threads that are not as heavyweight as "common" threads, but I'm not aware of any OS that does that. Threads are the only multiprocessing abstraction provided by the CPU and the OS (although now there are some new abstractions for GPUs). |
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