Protothreads: Lightweight Stackless Threads in C

Protothreads are extremely lightweight stackless threads designed for severely memory constrained systems, such as small embedded systems or wireless sensor network nodes. Protothreads provide linear code execution for event-driven systems implemented in C. Protothreads can be used with or without an underlying operating system to provide blocking event-handlers. While protothreads originally were created for memory-constrained embedded systems, it has found many uses as a general purpose library too.

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