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A memory-safe pure-actor virtual machine

Applying the design principle of actors-all-the-way-down, uFork implements a virtual-machine that is memory-safe at the level of assembly-language instructions. All operations occur in the context of an actor message-event, which provides object-capability security throughout the system. The effects of individual instructions are isolated so they can only affect the state of their host actor until a transactional commit releases additional asynchronous message-events into the system. This isolation allows interleaved execution of multiple instruction streams, so multiple actors can make progress concurrently. The virtual-machine implements automatic memory management with garbage-collection, and fine-grained resource quotas are enforced by the processor.

Logo NLnet: abstract logo of four people seen from above Logo NGI Zero: letterlogo shaped like a tag

This project was funded through the NGI0 Entrust Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 101069594.

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